---
title: "FindUtils Tool API Documentation"
description: "Interactive docs for 369 FindUtils REST tools. Try calls, copy curl, JavaScript, and Python snippets, and download the OpenAPI spec."
url: https://findutils.com/api/docs/
---

# FindUtils API Documentation

Interactive docs for 369 FindUtils REST tools. Try calls, copy curl, JavaScript, and Python snippets, and download the OpenAPI spec.

- Base URL: https://api.findutils.com
- OpenAPI 3.1: [/api/openapi.json](https://findutils.com/api/openapi.json)
- Overview: [REST API](https://findutils.com/api/)
- MCP server docs: [MCP](https://findutils.com/mcp/)

## Tool reference (369)

Each page documents one endpoint: the request, the input schema and a verified example.

- [Age Calculate](https://findutils.com/api/age-calculate/): Calculate age from a date of birth — years, months, days, plus totals in days, weeks, and months.
- [Ai Model Picker](https://findutils.com/api/ai-model-picker/): Return the best-matching AI coding models (top 3 by default) for a project, scored on speed, accuracy, cost and context window from four…
- [Amortization Calculator](https://findutils.com/api/amortization-calculator/): Return a full loan amortization schedule (one row per month with payment, principal, interest, extra payment, balance) plus totals…
- [Api Docs Generator](https://findutils.com/api/api-docs-generator/): Return API documentation generated from a list of endpoints, as Markdown (with table of contents, request/response examples)…
- [Aspect Ratio](https://findutils.com/api/aspect-ratio/): Compute the aspect ratio of width:height.
- [Ass To Srt](https://findutils.com/api/ass-to-srt/): Flatten an Advanced SubStation Alpha (.ass) or SubStation Alpha (.ssa) subtitle script to plain SubRip (.srt).
- [Attendance Sheet Generator](https://findutils.com/api/attendance-sheet-generator/): Generate a blank attendance sheet for a list of students over consecutive days and return the date columns, a CSV, a Markdown table…
- [Auto Loan Calculator](https://findutils.com/api/auto-loan-calculator/): Return the monthly car payment, total interest, financed amount, and a month-by-month amortization schedule for an auto loan.
- [Barcode Generator](https://findutils.com/api/barcode-generator/): Generate a 1D barcode as an SVG string from text.
- [Base32 Decode](https://findutils.com/api/base32-decode/): Decode RFC 4648 base32 back to UTF-8 text.
- [Base32 Encode](https://findutils.com/api/base32-encode/): Encode UTF-8 text to RFC 4648 base32 (uppercase, "=" padding).
- [Base64 Decode](https://findutils.com/api/base64-decode/): Decode a base64 string back to UTF-8 text.
- [Base64 Encode](https://findutils.com/api/base64-encode/): Encode UTF-8 text as a base64 string.
- [Base64 Encoder / Decoder](https://findutils.com/api/base64/): Encode text to Base64 or decode Base64 back to text.
- [Bmi Calculate](https://findutils.com/api/bmi-calculate/): Compute Body Mass Index (BMI) with metric (kg/cm) or imperial (lb/in) units.
- [Body Fat Calculator](https://findutils.com/api/body-fat-calculator/): Estimate body fat percentage, fat mass, lean mass, BMI, and a body-composition category.
- [Bookmarks Diff](https://findutils.com/api/bookmarks-diff/): Compare two Netscape bookmarks.html exports (before and after) and list the links that were added, removed, or changed.
- [Bookmarks Html To Csv](https://findutils.com/api/bookmarks-html-to-csv/): Convert a browser bookmarks.html export from Chrome, Firefox, Edge, Safari or any other browser that writes the Netscape bookmark format…
- [Bookmarks Json To Html](https://findutils.com/api/bookmarks-json-to-html/): Convert a bookmarks JSON file into a Netscape bookmarks.html that Chrome, Firefox, Edge and Safari import.
- [Bot Crawl Checker](https://findutils.com/api/bot-crawl-checker/): Return which of 24 well-known crawlers (Googlebot, BingBot, GPTBot, ClaudeBot, PerplexityBot, AhrefsBot, Twitterbot and more) are allowed…
- [Box Shadow Generator](https://findutils.com/api/box-shadow-generator/): Generate a CSS box-shadow declaration from offset, blur, spread, colour, opacity, and inset settings, or from a named preset (subtle, soft…
- [Break Even Calculator](https://findutils.com/api/break-even-calculator/): Return the break-even point of a product or business: contribution margin, contribution margin ratio, break-even units and revenue…
- [Business Loan Calculator](https://findutils.com/api/business-loan-calculator/): Return the monthly payment, total interest, origination fee, effective yearly rate (interest plus fees), a yearly summary, and a full…
- [Calorie Calculator](https://findutils.com/api/calorie-calculator/): Work out how many calories to eat per day to lose, maintain, or gain weight.
- [Caption Generator](https://findutils.com/api/caption-generator/): Generate a social-media caption from a topic using built-in templates (no AI): picks a template for the content type and tone, fills…
- [Carbon Footprint Calculator](https://findutils.com/api/carbon-footprint-calculator/): Estimate an annual personal carbon footprint in tonnes of CO2 from home energy, transportation, and lifestyle, with a per-category…
- [Career Experience Calculator](https://findutils.com/api/career-experience-calculator/): Calculate total professional experience across several jobs: total days, years/months/days, weeks, working days (5/7), working hours (8 per…
- [Case Convert](https://findutils.com/api/case-convert/): Convert a string between camelCase, PascalCase, snake_case, kebab-case, SCREAMING_SNAKE, Title Case, Sentence case, lower, UPPER.
- [Chmod Calculate](https://findutils.com/api/chmod-calculate/): Convert between numeric (755) and symbolic (rwxr-xr-x) Unix file permissions.
- [Cidr Calculate](https://findutils.com/api/cidr-calculate/): Compute network / broadcast / first-last host / subnet mask / hosts count for a CIDR (e.g.
- [Citation Generator](https://findutils.com/api/citation-generator/): Generate a reference-list citation in APA 7, MLA 9, Chicago, or Harvard style for a book, website, journal, or article.
- [Client Status Report Generator](https://findutils.com/api/client-status-report-generator/): Generate a client-facing project status report in Markdown and return it with its headline counts.
- [Clip Path Generator](https://findutils.com/api/clip-path-generator/): Generate a CSS clip-path from a named shape (triangle, trapezoid, parallelogram, rhombus, pentagon, hexagon, octagon, star, chevron…
- [Cloudflare Cost Calculate](https://findutils.com/api/cloudflare-cost-calculate/): Estimate monthly Cloudflare developer platform costs (Workers, D1, R2, KV, Durable Objects) under free or $5 Workers Paid plans.
- [Code Diff Checker](https://findutils.com/api/code-diff-checker/): Returns a line-by-line diff of two code snippets: each line marked added, removed or unchanged with its original and modified line numbers…
- [Code Highlight Html](https://findutils.com/api/code-highlight-html/): Returns syntax-highlighted HTML for a code snippet: HTML-escaped text wrapped in <span style="color: ..."> elements using one of six colour…
- [Color Contrast](https://findutils.com/api/color-contrast/): Compute the WCAG 2.1 contrast ratio between two colours (accepts #rgb, #rrggbb, and rgb()/rgba() formats) and report whether it passes…
- [Color Convert](https://findutils.com/api/color-convert/): Convert between color formats: hex, rgb, hsl, hsv.
- [Color Palette Generator](https://findutils.com/api/color-palette-generator/): Generate a harmonious colour palette from a base hex colour: complementary, analogous, triadic, tetradic, split-complementary…
- [Compound Interest](https://findutils.com/api/compound-interest/): Compute compound interest growth.
- [Cookie Analyzer](https://findutils.com/api/cookie-analyzer/): Analyze Set-Cookie header strings and return a per-cookie list of security issues, an overall 0-100 score, and recommendations.
- [Country Lookup](https://findutils.com/api/country-lookup/): Return country facts — capital, currency (name, code, symbol), phone code, timezone, region, subregion, flag emoji, and languages…
- [Course Quiz Generator](https://findutils.com/api/course-quiz-generator/): Build a printable course quiz from a list of questions (multiple choice, true/false, short answer, fill in the blank) and return…
- [Credit Card Payoff Calculator](https://findutils.com/api/credit-card-payoff-calculator/): Return how long a credit card balance takes to pay off at a fixed monthly payment (mode "payment"), or the payment needed to clear it…
- [Credit Card Validate](https://findutils.com/api/credit-card-validate/): Validate a credit card number with the Luhn checksum and detect the brand.
- [Cron Describe](https://findutils.com/api/cron-describe/): Parse a 5-field cron expression (minute hour day-of-month month day-of-week) and produce a human-readable English description.
- [Cron To Systemd](https://findutils.com/api/cron-to-systemd/): Convert a 5-field cron expression into a systemd timer plus service unit and a Kubernetes CronJob YAML file.
- [Crypto Testnet Faucets](https://findutils.com/api/crypto-testnet-faucets/): Returns a curated list of crypto testnet faucets (Ethereum Sepolia, Base, Arbitrum, Optimism, Polygon, Avalanche, BNB Chain, Linea, Solana)…
- [Csp Generate](https://findutils.com/api/csp-generate/): Build a Content-Security-Policy header from a preset (strict, typical, google-analytics) and/or your own directives, and get the header…
- [Css Animation Generator](https://findutils.com/api/css-animation-generator/): Return CSS @keyframes animation code (or Tailwind config, Web Animations API / React, or Framer Motion code) from a named preset such…
- [Css Filter Generator](https://findutils.com/api/css-filter-generator/): Generate a CSS filter declaration from brightness, contrast, saturate, grayscale, sepia, invert, opacity, blur and hue-rotate…
- [Css Grid Generator](https://findutils.com/api/css-grid-generator/): Generate a CSS Grid container declaration.
- [Css Minifier](https://findutils.com/api/css-minifier/): Minify CSS (strip comments and whitespace) or beautify compressed CSS, and return the output with byte sizes and the percentage saved.
- [Csv Dedupe](https://findutils.com/api/csv-dedupe/): Remove duplicate rows from a CSV or TSV table.
- [Csv Diff](https://findutils.com/api/csv-diff/): Compare two CSV or TSV tables by key column and list the rows that were added, removed or changed - a table diff, not a line diff, so rows…
- [Csv To Bookmarks Html](https://findutils.com/api/csv-to-bookmarks-html/): Convert a CSV of links into a Netscape bookmarks.html file that Chrome, Firefox, Edge and Safari import.
- [Csv To Ics](https://findutils.com/api/csv-to-ics/): Turn a CSV of events into an iCalendar (.ics) file that Google Calendar, Apple Calendar and Outlook import.
- [Csv To Json](https://findutils.com/api/csv-to-json/): Parse CSV text into an array of objects keyed by the header row.
- [Csv To Ndjson](https://findutils.com/api/csv-to-ndjson/): Convert CSV into newline-delimited JSON (NDJSON, JSON Lines, .jsonl): one JSON object per line, keyed by the header row.
- [Csv To Sql](https://findutils.com/api/csv-to-sql/): Convert CSV text into SQL INSERT statements, optionally preceded by a CREATE TABLE.
- [Csv To Tsv](https://findutils.com/api/csv-to-tsv/): Convert comma-separated values to tab-separated values, the format spreadsheet paste, psql and mysql --batch expect.
- [Csv To Vcf](https://findutils.com/api/csv-to-vcf/): Convert a CSV of contacts into one multi-card .vcf file that iPhone, Android, Google Contacts and Outlook import.
- [Curl To Code](https://findutils.com/api/curl-to-code/): Returns source code that performs the same HTTP request as a cURL command, in JavaScript (fetch), Python (requests), PHP (cURL), Go…
- [Daily Habit Calculator](https://findutils.com/api/daily-habit-calculator/): Calculate how a daily habit adds up over a week, a month (30 days), a year (365 days), or a custom date range: total units, total cost…
- [Data Sanitizer](https://findutils.com/api/data-sanitizer/): Sanitize untrusted text and return the cleaned output, a list of changes made, and a risk level.
- [Date Difference](https://findutils.com/api/date-difference/): Compute the difference between two dates in years/months/weeks/days/hours/minutes/seconds.
- [Date Difference Calculator](https://findutils.com/api/date-diff/): Calculate the difference between two dates in various units.
- [Debt Payoff Calculator](https://findutils.com/api/debt-payoff-calculator/): Return a debt payoff plan for several debts using the avalanche (highest rate first) or snowball (lowest balance first) strategy: total…
- [Dedupe Bookmarks](https://findutils.com/api/dedupe-bookmarks/): Remove duplicate links from a Netscape bookmarks.html export (Chrome, Firefox, Edge, Safari) and return a clean bookmarks.html plus a CSV…
- [Dev Request Prioritizer](https://findutils.com/api/dev-request-prioritizer/): Prioritize development requests with the page's scoring frameworks and return them sorted by priority score, each with a value score…
- [Dividend Calculator](https://findutils.com/api/dividend-calculator/): Return a year-by-year projection of a dividend portfolio: dividends received, DRIP reinvestment, contributions, share count, share price…
- [Dnpm Configurator](https://findutils.com/api/dnpm-configurator/): Returns the five files of a hardened Docker-based npm wrapper (the ./dnpm bash script, .dnpm/Dockerfile, docker-compose.node.yml…
- [Dns Lookup](https://findutils.com/api/dns-lookup/): Return the DNS records of a domain for one record type (A, AAAA, CNAME, MX, TXT, NS or SOA).
- [Dns Security Scanner](https://findutils.com/api/dns-security-scanner/): Return a DNS security report for a domain: SPF, DMARC, MX and CAA records with issues, a 0-100 score, a letter grade and recommendations.
- [Domain Rating Checker](https://findutils.com/api/domain-rating-checker/): Return the Ahrefs Domain Rating (0-100) for up to 25 domains in one call, with a per-domain status (provider_unavailable means Ahrefs is…
- [Down Payment Calculator](https://findutils.com/api/down-payment-calculator/): Return the down payment, closing costs, total cash needed, remaining amount to save, months to save, target month, loan amount…
- [Eisenhower Matrix](https://findutils.com/api/eisenhower-matrix/): Sort tasks into the four Eisenhower quadrants and say what to do with each one.
- [Email Header Analyzer](https://findutils.com/api/email-header-analyzer/): Return a structured analysis of raw email headers: sender, recipient, subject, date, message id, the Received hop chain with per-hop…
- [Email Security Checker](https://findutils.com/api/email-security-checker/): Return an email-security report for the domain of an email address: MX, SPF, DKIM (common selectors), DMARC, MTA-STS, TLS-RPT and BIMI…
- [Email Signature Generator](https://findutils.com/api/email-signature-generator/): Generate an HTML email signature (table-based, inline styles, safe for Gmail/Outlook) from name, title, company, contact details and social…
- [Email Validate](https://findutils.com/api/email-validate/): Validate an email address and report every rule it breaks and break it into local / domain / TLD parts.
- [Env Linter](https://findutils.com/api/env-linter/): Lint a dotenv file for duplicate keys, unquoted spaces, export prefixes, secret-looking values (masked), and drift against an optional…
- [Env Yaml Converter](https://findutils.com/api/env-yaml-converter/): Convert a dotenv .env file to a flat YAML map, or YAML back to KEY=value lines.
- [Essay Outline Generator](https://findutils.com/api/essay-outline-generator/): Generate a structured essay outline (introduction, body paragraphs, conclusion) for five essay types and three lengths, and return each…
- [Faq Schema Generator](https://findutils.com/api/faq-schema-generator/): Generate FAQPage JSON-LD structured data from question-answer pairs, and return the JSON-LD string, a ready <script> tag, the schema…
- [Fire Calculator](https://findutils.com/api/fire-calculator/): Return the FIRE number (annual expenses / withdrawal rate), years to reach it, FIRE age, progress percent, monthly investment…
- [Flashcard Maker](https://findutils.com/api/flashcard-maker/): Turn a list of front/back pairs into a flashcard deck and return the numbered cards plus ready-to-import formats: CSV (Front,Back)…
- [Font Icon Search](https://findutils.com/api/font-icon-search/): Search a catalog of about 300 icons from Font Awesome, Material Icons, Lucide, and Heroicons by name, keyword, or category and return…
- [Form To Json Schema](https://findutils.com/api/form-to-json-schema/): Returns a form schema object ({ formId, method, action, fields, submitText }) extracted from HTML form markup.
- [Fraction Calculator](https://findutils.com/api/fraction-calculator/): Add, subtract, multiply or divide two fractions, or simplify one.
- [Gcd Calculate](https://findutils.com/api/gcd-calculate/): Greatest Common Divisor (GCD) and Least Common Multiple (LCM) of two non-negative integers.
- [Geo Analyzer](https://findutils.com/api/geo-analyzer/): Return a Generative Engine Optimization (GEO) report for a public web page: an overall 0-100 score, per-category scores (technical…
- [Glassmorphism Generator](https://findutils.com/api/glassmorphism-generator/): Generate the CSS for a glassmorphism (frosted glass) card: semi-transparent background, backdrop-filter blur and saturation (with…
- [Glob Pattern Tester](https://findutils.com/api/glob-pattern-tester/): Returns which file paths match a glob pattern and which do not.
- [Gpa Calculator](https://findutils.com/api/gpa-calculator/): Calculate a grade point average (GPA) on the 4.0 scale from course letter grades and credits.
- [Grade Calculator](https://findutils.com/api/grade-calculator/): Calculate a weighted course grade from categories (homework, quizzes, exams) with assignment scores, the letter grade (A to F)…
- [Gradient Generator](https://findutils.com/api/gradient-generator/): Generate a CSS linear, radial, or conic gradient from colour stops (2 to 10) and an angle, or from a preset (sunset, ocean, forest, fire…
- [Graphql Playground](https://findutils.com/api/graphql-playground/): Check a GraphQL query for balanced braces and, when a schema is supplied, unknown fields on Query/Mutation/Subscription types.
- [Graphql Schema Validator](https://findutils.com/api/graphql-schema-validator/): Validate a GraphQL SDL schema and return errors, naming-convention warnings, and counts of types, queries, mutations, and subscriptions.
- [Graphql To Typescript](https://findutils.com/api/graphql-to-typescript/): Convert a GraphQL SDL schema into TypeScript type definitions and return the generated code with counts of emitted types, enums, and inputs.
- [Har To Curl](https://findutils.com/api/har-to-curl/): Convert a HAR (HTTP Archive) file into curl commands, one per recorded request, and return them as a script plus a per-request list.
- [Har Viewer](https://findutils.com/api/har-viewer/): Parse HAR 1.x JSON and return each entry’s method, URL, status, size, time, and MIME type.
- [Hash Comparison Tool](https://findutils.com/api/hash-comparison-tool/): Hash text with MD5, SHA-1, SHA-256, SHA-384, or SHA-512 and compare the hex digest with an expected hash.
- [Hash Generate](https://findutils.com/api/hash-generate/): Hash text with MD5, SHA-1, SHA-256, or SHA-512.
- [Hash Generator](https://findutils.com/api/hash/): Generate MD5, SHA-1, SHA-256, or SHA-512 hash of a string.
- [Hashtag Generator](https://findutils.com/api/hashtag-generator/): Generate relevant hashtags from keywords using a built-in, rule-based database (no AI): matches keywords against topic categories, scores…
- [Heading Structure Analyzer](https://findutils.com/api/heading-structure-analyzer/): Analyze the H1-H6 heading hierarchy of an HTML document and return every heading, SEO warnings (missing or multiple H1, skipped levels…
- [Hex Decode](https://findutils.com/api/hex-decode/): Decode a hexadecimal string back to UTF-8 text.
- [Hex Encode](https://findutils.com/api/hex-encode/): Encode UTF-8 text as a hexadecimal string.
- [Hmac Generate](https://findutils.com/api/hmac-generate/): Compute an HMAC of a message with a secret key.
- [HMAC Generator](https://findutils.com/api/hmac/): Generate an HMAC signature using SHA-1, SHA-256, or SHA-512.
- [Home Affordability Calculator](https://findutils.com/api/home-affordability-calculator/): Return the maximum home price you can afford from income, monthly debts, down payment percent, rate, term, property tax, insurance, HOA…
- [Hreflang Tag Generator](https://findutils.com/api/hreflang-tag-generator/): Generate hreflang annotations for multilingual pages and return them as HTML <link> tags, an HTTP Link header, and an XML sitemap block…
- [Html Entity Decode](https://findutils.com/api/html-entity-decode/): Decode HTML entities back to characters.
- [Html Entity Encode](https://findutils.com/api/html-entity-encode/): Encode HTML special characters as entities.
- [Html Entity Finder](https://findutils.com/api/html-entity-finder/): Search the HTML entity catalog and return matching entities with their character, named entity, decimal code, hex code, and category.
- [Html Formatter](https://findutils.com/api/html-formatter/): Format (beautify) or minify HTML and return the result with a tag-balance validation report.
- [Html Strip](https://findutils.com/api/html-strip/): Strip all HTML tags from a string, converting block tags to newlines and decoding common entities.
- [Html Table To Json](https://findutils.com/api/html-table-to-json/): Convert an HTML <table> into JSON — an array of objects keyed by the header row, or an array of row arrays.
- [Html To Markdown](https://findutils.com/api/html-to-markdown/): Convert HTML fragments to Markdown.
- [Http Status Code Lookup](https://findutils.com/api/http-status-code-lookup/): Return the meaning, typical use case and fix for HTTP status codes.
- [Ics To Csv](https://findutils.com/api/ics-to-csv/): Convert an iCalendar (.ics) export from Google Calendar, Apple Calendar or Outlook into CSV, one row per event.
- [Ics To Json](https://findutils.com/api/ics-to-json/): Parse an iCalendar (.ics) export from Google Calendar, Apple Calendar or Outlook into JSON: one object per event with uid, summary…
- [Images To Pdf](https://findutils.com/api/images-to-pdf/): Combine JPG and PNG images into a single PDF, one image per page, in the order given.
- [Inflation Calculator](https://findutils.com/api/inflation-calculator/): Return what an amount of money from one year is worth in another year using historical CPI data, with total inflation, average yearly…
- [Ini Json Converter](https://findutils.com/api/ini-json-converter/): Convert classic INI, .cfg or .conf text to JSON, or a JSON object back to INI.
- [Internet Shortcuts To Csv](https://findutils.com/api/internet-shortcuts-to-csv/): Turn Windows Internet Shortcut files (.url) into a CSV or a plain list of URLs.
- [Investment Calculator](https://findutils.com/api/investment-calculator/): Return the projected value of an investment with compound growth and monthly contributions: final balance, total contributions, total…
- [Ip Blacklist Checker](https://findutils.com/api/ip-blacklist-checker/): Return whether an IPv4 address is listed on 12 well-known DNS blacklists (Spamhaus, Barracuda, SpamCop, SORBS, UCEPROTECT, PSBL and more)…
- [Ip Validate](https://findutils.com/api/ip-validate/): Validate an IPv4 or IPv6 address and classify it (public / private / loopback / link-local / multicast / global).
- [Jq Playground](https://findutils.com/api/jq-playground/): Returns the result of running a jq-style filter over a JSON document.
- [Json Comparer](https://findutils.com/api/json-comparer/): Returns a git-style line diff of two JSON documents after both are pretty-printed with 2-space indentation.
- [Json Diff](https://findutils.com/api/json-diff/): Returns the semantic differences between two JSON documents as a list of added, removed and modified paths with their old and new values…
- [Json Escaper](https://findutils.com/api/json-escaper/): Returns the text with JSON string escapes applied (mode "escape") or removed (mode "unescape").
- [Json Faker](https://findutils.com/api/json-faker/): Returns an array of fake JSON records built from a field list, for testing and prototyping.
- [Json Flatten](https://findutils.com/api/json-flatten/): Flatten a nested JSON object into a single-level map with dot-separated keys.
- [Json Format](https://findutils.com/api/json-format/): Pretty-print JSON with the requested indentation (1-8 spaces).
- [Json Ld Generator](https://findutils.com/api/json-ld-generator/): Generate JSON-LD structured data for 14 schema.org types (Article, BlogPosting, Product, Organization, LocalBusiness, Person, Event…
- [Json Minifier](https://findutils.com/api/json-minifier/): Minify JSON to a single line with no whitespace and return the compact text plus original size, minified size (bytes), and reduction…
- [Json Path Finder](https://findutils.com/api/json-path-finder/): Returns every match of a JSONPath expression in a JSON document: the concrete path and value of each match, the match count…
- [Json Query](https://findutils.com/api/json-query/): Extract a value from JSON via a dotted path.
- [Json Schema Form Builder](https://findutils.com/api/json-schema-form-builder/): Returns a form schema object (formId, method, action, fields, submitText) built from a list of field definitions.
- [Json Schema Generator](https://findutils.com/api/json-schema-generator/): Returns a JSON Schema (draft-07) object inferred from a sample JSON document.
- [Json Schema Validator](https://findutils.com/api/json-schema-validator/): Returns whether a JSON document is valid against a JSON Schema (draft-07 subset) and lists every violation with its JSON pointer path…
- [Json To Bootstrap Form](https://findutils.com/api/json-to-bootstrap-form/): Returns Bootstrap 5 form markup generated from a JSON form schema ({ formId?, layout?, method?, action?, fields: [...], submitText? }).
- [Json To Chart](https://findutils.com/api/json-to-chart/): Render a bar, line, or pie chart as an SVG string from JSON data of the form {"title","type","data":[{"label","value","color?"}]}.
- [Json To Csv](https://findutils.com/api/json-to-csv/): Convert a JSON array of flat objects into CSV.
- [Json To Email Template](https://findutils.com/api/json-to-email-template/): Generate a responsive, table-based HTML email (header, greeting, body paragraphs, button, footer, unsubscribe link) from JSON such…
- [Json To Go Struct](https://findutils.com/api/json-to-go-struct/): Returns Go struct definitions (as source text) generated from a JSON object.
- [Json To Html Form](https://findutils.com/api/json-to-html-form/): Returns clean HTML5 form markup generated from a JSON form schema ({ formId?, formClass?, method?, action?, fields: [...], submitText? }).
- [Json To Java Class](https://findutils.com/api/json-to-java-class/): Generate Java POJO class source code from a JSON object.
- [Json To Liquid](https://findutils.com/api/json-to-liquid/): Turn structured data into Shopify Liquid.
- [Json To Markdown Table](https://findutils.com/api/json-to-markdown-table/): Convert a JSON array of objects to a GitHub-flavoured Markdown table.
- [Json To Org Chart](https://findutils.com/api/json-to-org-chart/): Generate nested HTML for an organisation chart from JSON of the form {"title","root":{"name","title","avatar","children":[...]}}.
- [Json To Pricing Table](https://findutils.com/api/json-to-pricing-table/): Generate the HTML for a pricing table (div.pricing-container with .pricing-card/.plan-features classes) from JSON of the form…
- [Json To Product Card](https://findutils.com/api/json-to-product-card/): Generate an e-commerce product card from JSON such as {"name","price","originalPrice","currency","rating","reviews","badges"} in one of 6…
- [Json To Profile Card](https://findutils.com/api/json-to-profile-card/): Generate a profile card for team pages and portfolios from JSON such as {"name","title","company","location","email","bio","skills"…
- [Json To Python Class](https://findutils.com/api/json-to-python-class/): Generate Python class source code from a JSON object as a dataclass, a Pydantic model, or a plain class.
- [Json To React Form](https://findutils.com/api/json-to-react-form/): Return a typed React (TSX) form component generated from a JSON schema of fields — inputs, textarea, select, checkbox, radio…
- [Json To Readme](https://findutils.com/api/json-to-readme/): Generate a README.md (title, shields.io badges, description, demo/docs links, features, installation, usage, contributing, author, license)…
- [Json To Social Card](https://findutils.com/api/json-to-social-card/): Generate a social-media / Open Graph card (1200x630 aspect) from JSON such as {"title","description","author","date","siteName","tag"…
- [Json To Sql](https://findutils.com/api/json-to-sql/): Convert a JSON array of objects into SQL INSERT statements, optionally preceded by a CREATE TABLE.
- [Json To Tailwind Form](https://findutils.com/api/json-to-tailwind-form/): Generate React JSX for a Tailwind CSS styled form from a JSON form schema.
- [Json To Testimonial Card](https://findutils.com/api/json-to-testimonial-card/): Generate a testimonial / review card from JSON such as {"quote","author","title","company","rating","date","highlighted"} in one of 6…
- [Json To Timeline](https://findutils.com/api/json-to-timeline/): Generate the HTML for a timeline (div.timeline with .timeline-event/.event-marker/.event-content classes) from JSON of the form…
- [Json To Typescript](https://findutils.com/api/json-to-typescript/): Generate TypeScript interfaces or type aliases from a JSON sample.
- [Json To Url Params](https://findutils.com/api/json-to-url-params/): Convert a JSON object into a URL query string that starts with "?".
- [Json To Xml](https://findutils.com/api/json-to-xml/): Convert a JSON value to XML.
- [Json To Zod Schema](https://findutils.com/api/json-to-zod-schema/): Generate a Zod validation schema (TypeScript source) from a JSON sample.
- [Json Unflatten](https://findutils.com/api/json-unflatten/): Unflatten a flat key map back into nested JSON.
- [Json Validate](https://findutils.com/api/json-validate/): Validate a JSON string.
- [Json Visualizer](https://findutils.com/api/json-visualizer/): Return a text tree outline, structure statistics, and JSONPath list for a JSON document.
- [Json Yaml Converter](https://findutils.com/api/json-yaml-converter/): Convert JSON to YAML or YAML to JSON and return the converted text.
- [Jwt Decode](https://findutils.com/api/jwt-decode/): Decode a JWT header + payload.
- [Jwt Generator](https://findutils.com/api/jwt-generator/): Generate a signed JWT (HS256, HS384, or HS512 via HMAC) and return the token plus the decoded header and payload.
- [Jwt Security Validator](https://findutils.com/api/jwt-security-validator/): Decode a JWT and return a list of security checks (algorithm strength, expiration, not-before, issued-at, issuer, audience, subject…
- [Keyboard Shortcut Finder](https://findutils.com/api/keyboard-shortcut-finder/): Return keyboard shortcuts (Mac and Windows keys) that match a search query, app, or category.
- [Keyword Density Checker](https://findutils.com/api/keyword-density-checker/): Analyze keyword density in text and return word/sentence/paragraph counts, the top 1-gram, 2-gram, and 3-gram phrases with counts…
- [Kktc Exchange Rates](https://findutils.com/api/kktc-exchange-rates/): Return live buy and sell exchange rates (against Turkish lira) from Northern Cyprus (KKTC) exchange offices and banks, per currency…
- [Knap Render](https://findutils.com/api/knap-render/): Render a Knap template (knap.md, the Markdown template language behind Obsidian Web Clipper and Importer) with a JSON object of variables…
- [Lesson Plan Template](https://findutils.com/api/lesson-plan-template/): Fill a structured lesson plan template (header, learning objectives, materials, timed activities, assessment, homework, notes) and return…
- [Levenshtein Distance](https://findutils.com/api/levenshtein-distance/): Compute the Levenshtein edit distance between two strings (minimum single-character insertions, deletions, or substitutions to transform…
- [Line Dedupe](https://findutils.com/api/line-dedupe/): Remove duplicate lines, keeping either the first or the last occurrence.
- [Line Prefix Suffix](https://findutils.com/api/line-prefix-suffix/): Add a prefix, a suffix, or line numbers to every line of a text.
- [Line Sort](https://findutils.com/api/line-sort/): Sort lines alphabetically, numerically, by length, or shuffle them randomly.
- [Linkedin Post Generator](https://findutils.com/api/linkedin-post-generator/): Assemble a LinkedIn post from a hook, a body, a call to action and hashtags, or from one of seven built-in templates (thought leadership…
- [Llm Requirements Calculator](https://findutils.com/api/llm-requirements-calculator/): Estimate the VRAM, system RAM, and disk space needed to run an open-weight LLM locally, and which common GPUs and Macs it fits on.
- [Llms Txt Generate](https://findutils.com/api/llms-txt-generate/): Build an llms.txt file (llmstxt.org format): an H1 site name, a blockquote summary, optional prose, H2 sections of "- [title](url)…
- [Loan Calculate](https://findutils.com/api/loan-calculate/): Amortise a fixed-rate loan and show the impact of an optional monthly extra payment on payoff time and total interest.
- [Lorem Ipsum Generate](https://findutils.com/api/lorem-ipsum-generate/): Generate Lorem Ipsum placeholder text: words, sentences, or paragraphs.
- [Macro Calculator](https://findutils.com/api/macro-calculator/): Calculate daily calorie needs and a macronutrient split (protein, carbs, fat in grams and kcal) for weight loss, maintenance, or muscle…
- [Markdown Table Generator](https://findutils.com/api/markdown-table-generator/): Build a GitHub-flavoured Markdown table and return the markdown string.
- [Markdown Table Parse](https://findutils.com/api/markdown-table-parse/): Parse a GitHub-flavored Markdown table into structured rows: headers, column alignments, cell rows, and one record object per row.
- [Markdown To Html](https://findutils.com/api/markdown-to-html/): Convert Markdown to HTML, including GFM tables, task lists, nested lists, strikethrough, fenced code and autolinks.
- [Math Formula Templates](https://findutils.com/api/math-formula-templates/): Return LaTeX source for well-known math and physics formulas from the built-in template library of the math expression generator page (40+…
- [Merge Bookmarks](https://findutils.com/api/merge-bookmarks/): Merge two or more Netscape bookmarks.html exports (Chrome, Firefox, Edge, Safari) into one bookmarks.html that any browser imports.
- [Merge Ics](https://findutils.com/api/merge-ics/): Merge several iCalendar (.ics) exports into one calendar file for a single import or archive.
- [Merge Vcf](https://findutils.com/api/merge-vcf/): Combine several .vcf vCard files into one importable file.
- [Meta Tag Fetcher](https://findutils.com/api/meta-fetch/): Fetch title, meta description, Open Graph tags, and favicon from a URL.
- [Meta Tag Generator](https://findutils.com/api/meta-tag-generator/): Generate HTML <head> meta tags (title, description, keywords, robots, canonical, Open Graph, Twitter Card, viewport, charset, language)…
- [Mime Type Finder](https://findutils.com/api/mime-type-finder/): Return MIME types with their file extensions and descriptions.
- [Mock Json Generator](https://findutils.com/api/mock-json-generator/): Generate an array of mock JSON records from a list of field definitions.
- [Morse Code](https://findutils.com/api/morse-code/): Encode text to Morse code or decode it back.
- [Mortgage Calculate](https://findutils.com/api/mortgage-calculate/): Compute a fixed-rate mortgage monthly payment using the standard amortisation formula M = P·r(1+r)^n / ((1+r)^n - 1).
- [Nanoid Generate](https://findutils.com/api/nanoid-generate/): Generate one or more NanoID-style identifiers.
- [Ndjson To Csv](https://findutils.com/api/ndjson-to-csv/): Convert newline-delimited JSON (NDJSON, JSON Lines, .jsonl) into a flat CSV.
- [Net Worth Calculator](https://findutils.com/api/net-worth-calculator/): Return net worth (total assets minus total liabilities), the debt-to-asset ratio in percent, and subtotals per category.
- [Neumorphism Generator](https://findutils.com/api/neumorphism-generator/): Generate soft-UI (neumorphism) CSS from a single surface colour.
- [Number Base Convert](https://findutils.com/api/number-base-convert/): Convert an integer between bases 2, 8, 10, and 16.
- [Number Base Converter](https://findutils.com/api/number-base/): Convert numbers between binary, octal, decimal, and hexadecimal.
- [One Rep Max Calculator](https://findutils.com/api/one-rep-max-calculator/): Estimate a one-rep max (1RM) from a weight lifted for a number of reps, using Brzycki, Epley, Lander, Lombardi, Mayhew, O'Conner…
- [Open Graph Preview](https://findutils.com/api/open-graph-preview/): Extract Open Graph and Twitter Card tags from an HTML document (or take them as fields), and return the parsed values, validation issues…
- [Openapi Validator](https://findutils.com/api/openapi-validator/): Validate an OpenAPI 3.x (or Swagger 2.0) document given as JSON or YAML and return a report with errors, warnings, and summary info (title…
- [Opml To Csv](https://findutils.com/api/opml-to-csv/): Flatten an OPML subscription export (Feedly, Inoreader, NetNewsWire, podcast apps) into CSV with one row per feed: title, xml_url…
- [Pace Calculator](https://findutils.com/api/pace-calculator/): Running pace calculator.
- [Palindrome Check](https://findutils.com/api/palindrome-check/): Check if a string reads the same forwards and backwards.
- [Password Breach Checker](https://findutils.com/api/password-breach-checker/): Return whether a password appears in known data breaches and how many times, using the Have I Been Pwned k-anonymity range API.
- [Password Generate](https://findutils.com/api/password-generate/): Generate cryptographically-strong passwords.
- [Password Pattern Validator](https://findutils.com/api/password-pattern-validator/): Validate a password against configurable rules and return each check (pass/fail with severity), a 0-100 score, and a strength label.
- [Password Strength](https://findutils.com/api/password-strength/): Estimate password strength using character-class entropy.
- [Paycheck Calculator](https://findutils.com/api/paycheck-calculator/): Estimate United States take-home pay from a gross salary: federal income tax using the published bracket tables and the standard deduction…
- [Pdf Delete Pages](https://findutils.com/api/pdf-delete-pages/): Remove pages from a PDF and return the rest in their original order.
- [Pdf Extract](https://findutils.com/api/pdf-extract/): PDF Text Extractor.
- [Pdf Merge](https://findutils.com/api/pdf-merge/): Combine several PDFs into one, in the order given.
- [Pdf Organize](https://findutils.com/api/pdf-organize/): Reorder the pages of a PDF.
- [Pdf Page Numbers](https://findutils.com/api/pdf-page-numbers/): Add page numbers to a PDF.
- [Pdf Rotate](https://findutils.com/api/pdf-rotate/): Rotate pages of a PDF by 90, 180 or 270 degrees clockwise, or the negative of those for anticlockwise.
- [Pdf Split](https://findutils.com/api/pdf-split/): Take a selection of pages out of a PDF into a new one.
- [Pdf Watermark](https://findutils.com/api/pdf-watermark/): Stamp text across the pages of a PDF — CONFIDENTIAL, DRAFT, a company name.
- [Pem Decoder](https://findutils.com/api/pem-decoder/): Parse PEM certificates, CSRs, and keys in the browser-equivalent decoder.
- [Percentage Calculate](https://findutils.com/api/percentage-calculate/): Percentage math.
- [Percentage Calculator](https://findutils.com/api/percentage/): Calculate percentages: X% of Y, percent change, increase, or decrease.
- [Pgp Encryption Tool](https://findutils.com/api/pgp-encryption-tool/): Encrypt or decrypt a short message with RSA-OAEP (SHA-256) PEM keys, or generate a new RSA key pair.
- [Phone Format](https://findutils.com/api/phone-format/): Validate a phone number and format it as E.164 (+CCNNN…), international and national, using libphonenumber metadata for every country.
- [Placeholder Image Generator](https://findutils.com/api/placeholder-image-generator/): Generate a placeholder image as an SVG string: a solid background with centred bold text (the dimensions by default, or custom text)…
- [Plist Json Converter](https://findutils.com/api/plist-json-converter/): Convert an Apple property list (Info.plist, preferences, .mobileconfig, entitlements) to JSON, or JSON to an XML plist.
- [Port Reference Guide](https://findutils.com/api/port-reference-guide/): Return well-known network ports that match a port number, service name, protocol, or category, with a security note (safe / caution /…
- [Postman To Curl](https://findutils.com/api/postman-to-curl/): Convert a Postman collection (v2.x JSON) into curl commands, one per request, and return them as a script plus a per-request list.
- [Prime Check](https://findutils.com/api/prime-check/): Check whether an integer is prime.
- [Privacy Policy Checker](https://findutils.com/api/privacy-policy-checker/): Check a privacy policy text for 24 expected disclosures and return a 0-100 completeness score, each check with found/missing and severity…
- [Privacy Policy Generator](https://findutils.com/api/privacy-policy-generator/): Generate a privacy policy in Markdown from a short questionnaire: what personal data you collect (name, email, phone, address, payment…
- [Profit Margin Calculator](https://findutils.com/api/profit-margin-calculator/): Return cost, selling price, profit, profit margin (percent of price), and markup (percent of cost).
- [Purchase Order Generator](https://findutils.com/api/purchase-order-generator/): Return a purchase order as structured data and as Markdown text: line items with amounts, subtotal, tax, shipping, and total, plus company…
- [Qr Text](https://findutils.com/api/qr-text/): Generate a scannable QR code as text art.
- [Query String Parse](https://findutils.com/api/query-string-parse/): Parse a URL query string into an object.
- [Query String Stringify](https://findutils.com/api/query-string-stringify/): Serialise an object into a URL query string.
- [Quiz Maker](https://findutils.com/api/quiz-maker/): Build a quiz from multiple-choice, true/false and open-ended questions and return the numbered quiz, an answer key (with model answers…
- [Random Key Generator](https://findutils.com/api/random-key-generator/): Generate cryptographically random keys (API keys, tokens, secrets) and return them as a list of strings.
- [Random Name Picker](https://findutils.com/api/random-name-picker/): Pick a random winner from a list of names.
- [Random Number](https://findutils.com/api/random-number/): Generate cryptographically-random integers or floats in a range.
- [Random Picker](https://findutils.com/api/random-picker/): Generate random numbers, pick random items from a list, or split people into random teams.
- [Random String](https://findutils.com/api/random-string/): Generate cryptographically-random strings from a chosen charset.
- [Readability Calculator](https://findutils.com/api/readability-calculator/): Compute six readability scores for English text (Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, SMOG, Coleman-Liau, Automated…
- [Reading Time](https://findutils.com/api/reading-time/): Estimate reading time for a block of text.
- [Refinance Calculator](https://findutils.com/api/refinance-calculator/): Return the new monthly payment, monthly savings, total cost of the current vs the new loan, total savings, break-even month, and whether…
- [Regex Test](https://findutils.com/api/regex-test/): Test a JavaScript regular expression against input text.
- [Relationship Calculator](https://findutils.com/api/relationship-calculator/): Calculate how long a relationship has lasted between a start date and a target date: years/months/days, totals in days, weeks, months…
- [Report Card Generator](https://findutils.com/api/report-card-generator/): Generate a report card from a list of subjects with letter grades and credits and return the credit-weighted GPA on a 4.0 scale…
- [Research Title Generator](https://findutils.com/api/research-title-generator/): Generate up to 20 academic research paper titles from a topic, field, variables, population, and research type, and return each title…
- [Retirement Calculator](https://findutils.com/api/retirement-calculator/): Return the projected savings at retirement, the amount needed to fund an inflation-adjusted monthly income until life expectancy, the gap…
- [Retro Meeting](https://findutils.com/api/retro-meeting/): Turn a finished sprint-retrospective board into shareable results: a Markdown summary grouped by category with items sorted by votes, a CSV…
- [Robots Txt Generator](https://findutils.com/api/robots-txt-generator/): Return a robots.txt file built from user-agent rules (allow, disallow, crawl-delay), sitemap URLs and an optional Host directive…
- [Robots Txt Tester](https://findutils.com/api/robots-txt-tester/): Test URLs or paths against robots.txt text for a given crawler, following RFC 9309 as Google implements it: the group naming the crawler's…
- [Roi Calculator](https://findutils.com/api/roi-calculator/): Return the return on investment: total invested (amount plus extra costs), net gain, simple ROI percent, annualized ROI percent, years…
- [Roman Numeral](https://findutils.com/api/roman-numeral/): Convert between Roman numerals and Arabic integers (1-3999).
- [Rot13](https://findutils.com/api/rot13/): Apply the ROT13 Caesar cipher to text.
- [Rtf To Markdown](https://findutils.com/api/rtf-to-markdown/): Convert Rich Text Format (.rtf) source to Markdown.
- [Rubric Generator](https://findutils.com/api/rubric-generator/): Build a grading rubric from weighted criteria and performance levels and return the rubric grid, the total weight (with a flag when it is…
- [Salary Calculator](https://findutils.com/api/salary-calculator/): Return the same pay expressed as hourly, daily, weekly, bi-weekly, semi-monthly, monthly, and yearly amounts.
- [Savings Calculator](https://findutils.com/api/savings-calculator/): Return the future value of savings with compound interest and monthly contributions: total value, total contributions, total interest…
- [Sbv To Srt](https://findutils.com/api/sbv-to-srt/): Convert a YouTube SubViewer (.sbv) caption export to SubRip (.srt), or back again.
- [Schema Org Generator](https://findutils.com/api/schema-org-generator/): Superseded by json_ld_generator, which builds these 8 types and 6 more with the same output; this id stays so existing callers keep working.
- [Scientific Calculator](https://findutils.com/api/scientific-calculator/): Evaluate a scientific math expression and return the numeric result (12 significant digits).
- [Scope Creep Tracker](https://findutils.com/api/scope-creep-tracker/): Measure scope creep on a project and return the numbers a stakeholder report needs: original (baseline) effort, approved / pending /…
- [Seating Chart Maker](https://findutils.com/api/seating-chart-maker/): Assign students to a rows × columns seating grid (in list order, or shuffled) and return the grid, each student's row/column/seat number…
- [Security Headers Analyzer](https://findutils.com/api/security-headers-analyzer/): Grade a set of HTTP response headers for security: returns a 0-100 score, a letter grade (A+ to F), a pass/fail/warning summary…
- [Self Employment Tax Calculator](https://findutils.com/api/self-employment-tax-calculator/): Return the yearly self-employment tax bill for the USA (SE tax: Social Security, Medicare, additional Medicare, plus federal income tax)…
- [Seo Title Description Writer](https://findutils.com/api/seo-title-description-writer/): Analyze an SEO title and meta description and return character counts, estimated SERP pixel widths against Google desktop/mobile limits…
- [Serp Preview](https://findutils.com/api/serp-preview/): Return how a page title and meta description will display in Google search results on desktop or mobile: the truncated display text…
- [Signature Generator](https://findutils.com/api/signature-generator/): Generate a typed signature as an SVG string: the name is set in a handwriting font (cursive, elegant, bold, or casual) in the chosen colour…
- [Site To Markdown](https://findutils.com/api/site-to-markdown/): Convert a full web page's HTML into clean Markdown, the way the Site to Markdown page does: navigation, footers, scripts, styles, iframes…
- [Sitemap Validator](https://findutils.com/api/sitemap-validator/): Validate sitemap XML text against the sitemaps.org protocol: well-formed XML, <urlset> or <sitemapindex> and its namespace, absolute…
- [Sleep Calculator](https://findutils.com/api/sleep-calculator/): Calculate the best bedtimes for a wake-up time, or the best wake-up times for a bedtime, based on 90-minute sleep cycles plus 15 minutes…
- [Slug Generate](https://findutils.com/api/slug-generate/): Turn a string into a URL-safe slug (kebab-case by default, Unicode-normalized).
- [Slugify Deep](https://findutils.com/api/slugify-deep/): Slugify text with locale-aware diacritics handling (Turkish, German, French, Spanish) before falling back to Unicode NFD stripping.
- [Social Media Bio Generator](https://findutils.com/api/social-media-bio-generator/): Compose a social-media profile bio from a profession, skills, an achievement, a location and a call to action in one of five styles…
- [Social Media Calendar Generator](https://findutils.com/api/social-media-calendar-generator/): Turn a list of planned social media posts into a content calendar: a CSV export (Date, Time, Platform, Content Type, Title, Description…
- [Split Ics](https://findutils.com/api/split-ics/): Split one large iCalendar (.ics) file into smaller .ics files so an importer that rejects a big calendar accepts each part.
- [Sprint Capacity Calculator](https://findutils.com/api/sprint-capacity-calculator/): Calculate a team's realistic sprint capacity in hours and story points.
- [Sql Formatter](https://findutils.com/api/sql-formatter/): Format (beautify) or minify a SQL query and return the result with lint warnings.
- [Sql To Csv](https://findutils.com/api/sql-to-csv/): Read rows out of SQL INSERT statements and return CSV, one file per table.
- [Sql To Json](https://findutils.com/api/sql-to-json/): Read rows out of SQL INSERT statements (mysqldump, SQLite dump, pg_dump made with --inserts; PostgreSQL COPY blocks are not read)…
- [Srt To Txt](https://findutils.com/api/srt-to-txt/): Turn a SubRip (.srt) or WebVTT (.vtt) caption file into a plain-text transcript: cue numbers and timestamps are removed and the cue text is…
- [Srt To Vtt](https://findutils.com/api/srt-to-vtt/): Convert SubRip (.srt) captions to WebVTT (.vtt) and back.
- [Ssl Certificate Checker](https://findutils.com/api/ssl-certificate-checker/): Return the TLS certificate details of a public hostname: validity, issuer, subject, expiry and days remaining, protocol, key size…
- [State Machine Designer](https://findutils.com/api/state-machine-designer/): Validate a finite state machine given as nodes and edges and return a normalized machine config plus issues.
- [Statistics Calculator](https://findutils.com/api/statistics-calculator/): Descriptive statistics for a list of numbers: count, sum, mean, median, mode, min, max, range, variance, standard deviation…
- [Stock Average Calculator](https://findutils.com/api/stock-average-calculator/): Return the average cost per share (dollar cost averaging) across several buys, the total shares, total invested, break-even price…
- [String Escape](https://findutils.com/api/string-escape/): Escape or unescape a string for JSON, HTML, URL, or regex contexts.
- [Structured Data Tester](https://findutils.com/api/structured-data-tester/): Validate JSON-LD structured data (given directly or extracted from HTML <script type="application/ld+json"> blocks) and return, per…
- [Subnet Calculator](https://findutils.com/api/subnet-calculator/): Return the full IPv4 subnet breakdown for an address: network and broadcast address, subnet mask, wildcard mask, binary mask, first…
- [Subtitle Clean](https://findutils.com/api/subtitle-clean/): Clean the text of a SubRip (.srt) or WebVTT (.vtt) caption file without touching its timing: strip HTML tags such as <i> and <font>…
- [Subtitle Fps Convert](https://findutils.com/api/subtitle-fps-convert/): Rescale every cue in a SubRip (.srt) or WebVTT (.vtt) caption file from one frame rate to another, so a track that slowly drifts out…
- [Subtitle Merge](https://findutils.com/api/subtitle-merge/): Join several SubRip (.srt) or WebVTT (.vtt) caption files into one track.
- [Subtitle Overlap Fix](https://findutils.com/api/subtitle-overlap-fix/): Fix overlapping cues in a SubRip (.srt) or WebVTT (.vtt) caption file, the kind a merge, shift or frame-rate change leaves behind and that…
- [Subtitle Shift](https://findutils.com/api/subtitle-shift/): Shift every cue in a SubRip (.srt) or WebVTT (.vtt) caption file by one fixed offset, so a track that runs early or late lines up…
- [Svg Animation Generator](https://findutils.com/api/svg-animation-generator/): Return an animated SVG (inline CSS @keyframes) and/or the CSS alone, built from a shape template (rect, circle, star, stick figure, sun…)…
- [Swagger To Openapi](https://findutils.com/api/swagger-to-openapi/): Convert a Swagger 2.0 document (JSON or YAML) to OpenAPI 3.0.3 and return the result as pretty-printed JSON with path and schema counts.
- [Tailwind To Stylex](https://findutils.com/api/tailwind-to-stylex/): Convert Tailwind CSS v4 theme variables, JSON design tokens, or a static Tailwind config theme into StyleX defineConsts source…
- [Tdee Calculator](https://findutils.com/api/tdee-calculator/): Calculate Total Daily Energy Expenditure (TDEE) and Basal Metabolic Rate (BMR) with the Mifflin-St Jeor equation, plus calorie targets…
- [Tech Debt Register](https://findutils.com/api/tech-debt-register/): Analyze a technical debt register and return the stakeholder numbers: active vs resolved counts, total hours to fix, weekly "interest" cost…
- [Temperature Convert](https://findutils.com/api/temperature-convert/): Convert temperature between Celsius (C), Fahrenheit (F), Kelvin (K), and Rankine (R).
- [Template To Liquid](https://findutils.com/api/template-to-liquid/): Convert a Handlebars, Mustache or Knap template into Shopify Liquid.
- [Text Diff](https://findutils.com/api/text-diff/): Line-by-line diff of two strings using LCS.
- [Text Encryption](https://findutils.com/api/text-encryption/): Encrypt text with a password using AES-256-GCM (key derived with PBKDF2-SHA256, 100000 iterations) and return a base64 ciphertext…
- [Text Find Replace](https://findutils.com/api/text-find-replace/): Find and replace text and return the new text with the match and replacement counts.
- [Text Repeat](https://findutils.com/api/text-repeat/): Repeat text N times with an optional separator.
- [Text Reverse](https://findutils.com/api/text-reverse/): Reverse text by characters, words, or lines.
- [Text Shadow Generator](https://findutils.com/api/text-shadow-generator/): Generate a CSS text-shadow declaration from offset, blur, colour and opacity, or from a named preset (subtle, hard, glow, outline, emboss…
- [Text Statistics](https://findutils.com/api/text-statistics/): Compute detailed text statistics: characters (with and without spaces), words, sentences, paragraphs, averages, plus Flesch Reading Ease…
- [Text Summarizer](https://findutils.com/api/text-summarizer/): Create an extractive summary of a text and return the summary with word and sentence statistics.
- [Text Truncate](https://findutils.com/api/text-truncate/): Truncate text to a maximum number of characters, or of words, optionally cutting at the last word boundary, with a suffix.
- [Thesis Statement Generator](https://findutils.com/api/thesis-statement-generator/): Generate up to 5 thesis statement variations from a topic, a position, and optional supporting reasons for four essay types, and return…
- [Thread Generator](https://findutils.com/api/thread-generator/): Build a numbered Twitter/X thread from a list of tweets, or split long-form text into tweets of at most 280 characters.
- [Time Difference](https://findutils.com/api/time-difference/): Work out how long there is between two times of day, with no dates involved.
- [Timesheet Calculator](https://findutils.com/api/timesheet-calculator/): Return total, regular, and overtime hours plus regular, overtime, and total pay for a list of work entries (start time, end time, break).
- [Timezone Convert](https://findutils.com/api/timezone-convert/): Convert a datetime between IANA time zones.
- [Tip Calculate](https://findutils.com/api/tip-calculate/): Calculate tip amount, total, and per-person split.
- [Tone Analyzer](https://findutils.com/api/tone-analyzer/): Analyze the emotional tone of English text with a rule-based word dictionary and return tone scores (joy, sadness, anger, fear, confidence…
- [Travel Budget Calculator](https://findutils.com/api/travel-budget-calculator/): Estimate a trip budget from per-day and one-off expenses: total per person, total for all travelers, daily spend, and a per-category…
- [Tsv To Csv](https://findutils.com/api/tsv-to-csv/): Convert tab-separated values (TSV, the format psql, mysql --batch and Excel "Text (Tab delimited)" write) to comma-separated values…
- [Two Fa Code Tester](https://findutils.com/api/two-fa-code-tester/): Compute the current TOTP code (RFC 6238) for a base32 secret and return the code, the seconds remaining in the window, and — when a code is…
- [Type Scale Generator](https://findutils.com/api/type-scale-generator/): Generate a modular type scale as CSS custom properties.
- [Ulid Generate](https://findutils.com/api/ulid-generate/): Generate one or more ULIDs — 26-character Crockford base32 identifiers that are lexicographically sortable by creation time.
- [Unit Convert](https://findutils.com/api/unit-convert/): Convert between length, weight, volume, area, speed, and temperature units (km/mi/m/ft, kg/lb, L/gal, m²/ha/acre, mph/kph/knot, °C/°F/K).
- [Unix Timestamp Convert](https://findutils.com/api/unix-timestamp-convert/): Convert between Unix timestamps and ISO dates.
- [Unix Timestamp Converter](https://findutils.com/api/unix-timestamp/): Convert Unix timestamps to human-readable dates and vice versa.
- [Url Decode](https://findutils.com/api/url-decode/): Decode a percent-encoded (URL-encoded) string back to plain text.
- [Url Encode](https://findutils.com/api/url-encode/): Percent-encode a string for safe inclusion in URLs.
- [Url Params To Json](https://findutils.com/api/url-params-to-json/): Parse URL query parameters into a JSON object.
- [Url Parse](https://findutils.com/api/url-parse/): Parse a URL into its components: protocol, host, port, pathname, query (as an object, repeat keys become arrays), hash, origin…
- [Url Safety Checker](https://findutils.com/api/url-safety-checker/): Run offline heuristic safety checks on a URL and return a risk level (low/medium/high), a 0+ risk score, per-check results, and warnings.
- [Url To Webloc](https://findutils.com/api/url-to-webloc/): Convert Windows .url Internet Shortcuts into Mac .webloc website location files.
- [Url Validate](https://findutils.com/api/url-validate/): Validate that a string is a well-formed URL and (optionally) require HTTPS.
- [Uuid Generate](https://findutils.com/api/uuid-generate/): Generate one or more UUIDs: random v4 (default), time-ordered v7 (RFC 9562), time-based v1 (RFC 4122, with a random node id rather than…
- [Vat Calculator](https://findutils.com/api/vat-calculator/): Return the net amount, the VAT (or sales tax) amount, and the gross amount for a price.
- [Vcard Generate](https://findutils.com/api/vcard-generate/): Generate a vCard (.vcf) contact card from name, organisation, emails, phones, address, URL, note and birthday.
- [Vcf To Csv](https://findutils.com/api/vcf-to-csv/): Convert a vCard (.vcf) contacts export from an iPhone, an Android phone, Gmail or Outlook into CSV, one row per contact.
- [Vocabulary Worksheet](https://findutils.com/api/vocabulary-worksheet/): Turn a word list into a printable vocabulary and spelling worksheet with an answer key.
- [Water Intake Calculator](https://findutils.com/api/water-intake-calculator/): Calculate a recommended daily water intake in liters, ounces, cups, and 250 ml glasses, plus a per-waking-hour amount.
- [Webloc To Url](https://findutils.com/api/webloc-to-url/): Convert Mac .webloc website shortcuts into Windows .url Internet Shortcuts.
- [Whitespace Clean](https://findutils.com/api/whitespace-clean/): Clean whitespace in text: trim the ends, trim each line, collapse runs of spaces, remove blank lines, and normalize line endings.
- [Whois Lookup](https://findutils.com/api/whois-lookup/): Return WHOIS-style registration data for a domain from the public RDAP service: registrar, creation, update and expiry dates, EPP status…
- [Windows Update Settings Generator](https://findutils.com/api/windows-update-settings-generator/): Generate a Windows Update configuration script (.reg, .ps1, or .bat) plus a matching restore script from a preset and/or individual…
- [Word Count](https://findutils.com/api/word-count/): Count words, characters, sentences, paragraphs, lines, and estimated reading time at 200 words per minute.
- [Work Anniversary Calculator](https://findutils.com/api/work-anniversary-calculator/): Calculate job tenure between a start date and a target date: years/months/days, totals in days, weeks, months, and hours, approximate…
- [Worksheet Generator](https://findutils.com/api/worksheet-generator/): Generate a printable math worksheet of addition, subtraction, multiplication, division, or mixed problems at easy (1–10), medium (1–50)…
- [Wvw Apps Json Generator](https://findutils.com/api/wvw-apps-json-generator/): Build and validate an apps.json manifest for wvw.dev (World Vibe Web) from a store object and a list of apps.
- [X402 Config Generator](https://findutils.com/api/x402-config-generator/): Return ready-to-paste x402 payment integration code plus the install command: a paywalled SERVER (Express, Hono, Next.js, Fastify, Gin…
- [Xml Formatter](https://findutils.com/api/xml-formatter/): Beautify or minify an XML document and return the formatted text.
- [Xml Sitemap Generator](https://findutils.com/api/xml-sitemap-generator/): Generate a valid XML sitemap from a list of URLs and return the XML, the number of URLs written, the invalid URLs that were skipped…
- [Xml To Json](https://findutils.com/api/xml-to-json/): Minimal XML → JSON converter.
- [Yaml To Json](https://findutils.com/api/yaml-to-json/): Minimal YAML → JSON converter (scalars, maps, lists, basic block scalars).
- [Yaml Toml Converter](https://findutils.com/api/yaml-toml-converter/): Convert YAML to TOML 1.0 or TOML back to YAML.
- [Yaml Validator](https://findutils.com/api/yaml-validator/): Validate YAML and return either the re-formatted document or the parse error with its line and column.
- [Youtube Description Generator](https://findutils.com/api/youtube-description-generator/): Assemble a structured YouTube video description from main content, timestamps, links, social links, a call to action and hashtags…
- [Yoyo Component Generator](https://findutils.com/api/yoyo-component-generator/): Generate Yoyo PHP component boilerplate: the PHP class (properties, props, query string, listeners, lifecycle hooks, actions, computed…
- [Yoyo Config Generator](https://findutils.com/api/yoyo-config-generator/): Generate Yoyo PHP framework setup code: the composer install command, the bootstrap/service-provider code, the route handler, and a sample…
- [Yoyo Loading State Builder](https://findutils.com/api/yoyo-loading-state-builder/): Build Yoyo PHP "yoyo:spinning" loading-state attributes and a ready-to-paste HTML snippet.