DeveloperHow to Debug a Failed HTTP Request From a HAR File
A practical debug path: save a HAR, inspect the table, copy one cURL, and send the public request again. Parse...
Developer ToolsHARHTTP
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Developer
DeveloperInspect .env Files and PEM Certificates in the Browser
Two local inspections that do not need a server: lint a .env file, then decode a PEM certificate or CSR. Live...
Developer ToolsDotenvPEM
DeveloperTailwind to StyleX Migration: Move the Token Layer before Components
The safest Tailwind-to-StyleX migration starts with colors, spacing, typography, and breakpoints—not a search-...
Developer ToolsTailwind CSSStyleX
DeveloperLocal LLM Memory Explained: VRAM, RAM, Quantization, and Context
A model file is only the start of local LLM memory planning. Weights, KV cache, buffers, and offload determine...
Developer ToolsLLMVRAM
DesignHow Browser Image Erasers Use Masks and Inpainting
An image eraser does not simply blur an object. It uses a mask and surrounding context to predict replacement...
DesignImage EditingInpainting
DeveloperPostman to cURL: Build Portable API Requests without Losing Context
cURL makes an API request portable, but Postman variables, scripts, and inherited settings still need delibera...
Developer ToolsPostmancURL
Category CalculatorWhy Photo Measurements Go Wrong: Calibration, Perspective, and Pixel Error
Photo measurement uses a simple scale, but perspective and endpoint error decide whether the result is useful.
MeasurementPhotographyCalibration
DeveloperWhat Is FindUtils? Browser Tools, REST API, and MCP Explained
FindUtils gives people, software, and AI assistants three direct ways to use practical utilities.
FindUtilsbrowser toolsREST API
Developer
Your Online PDF Parser Is Leaking Your Contracts. Here's the Fix.
smallpdf, ilovepdf, pdftotext.com — they all do the same thing: upload your PDF, parse it on a server, send ba...
PrivacyPDFDeveloper Tools
Design
Designing Layouts Before You Have the Real Content
You rarely have the final copy when you start a layout. This post covers how to design with placeholder conten...
DesignUXContent
Design
CSS Gradients and Shadows: Adding Depth Without Images
CSS gradients and shadows add depth and polish to an interface without a single image file. This post covers h...
DesignCSSWeb Dev
Developer
YAML vs JSON: Which Config Format Should You Use? (2026)
YAML and JSON store the same data but feel very different to work with. This post compares them as configurati...
Developer ToolsYAMLJSON
Developer
Why CSS Minification Still Matters for Page Speed (2026)
CSS is render-blocking: the browser will not paint your page until the stylesheet arrives. Minification shrink...
Developer ToolsCSSPerformance
Developer
CSV vs JSON: When to Use Each Data Format (2026)
CSV and JSON are the two formats almost every data task passes through. They are not interchangeable. This pos...
Developer ToolsJSONCSV
Design
Web Accessibility: Color Contrast Explained (2026)
Low-contrast text is the single most common accessibility failure on the web — and one of the easiest to fix....
DesignAccessibilityWCAG
Security
Is It Safe to Decode a JWT Online? What to Check First
A JWT is not just data — it's often a live credential. Pasting one into the wrong online decoder hands a stran...
SecurityJWTAuthentication
Developer
JSON Conversion Cheat Sheet: XML, YAML, CSV or TypeScript?
JSON converts cleanly into some formats and awkwardly into others. This cheat sheet is the decision tree: give...
Developer ToolsJSONConverters
Security
Client-Side vs Server-Side Online Tools: Which Is Safer?
When you use an online tool, your file either stays in your browser or gets uploaded to someone's server. That...
SecurityPrivacyOnline Tools
Generators
Technical SEO Checklist: Sitemap, Robots.txt & Hreflang
Technical SEO is not glamorous, but it is the foundation everything else stands on. This post is the practical...
SEOTechnical SEOSitemap
Developer
API Marketplaces for AI Agents: How Autonomous Software Discovers and Pays for Data
An AI agent that needs a postcode lookup mid-task cannot read your docs, click 'Get API key', or enter a credi...
Developer ToolsAI Agentsx402
Category Seo
GEO vs SEO in 2026: Why Your Google Rankings Stopped Mattering
Traditional SEO optimizes for keyword rankings. GEO optimizes for AI citations. The overlap is real but shrink...
GEOAI SEOSEO Strategy
Financial
31 Free Finance Calculators — When to Use Each (2026)
From SBA loans to FIRE numbers to VAT — our finance suite now covers 31 distinct calculators. This post is the...
FinancialCalculatorsPersonal Finance
Developer
FindUtils Is Now One of the Most Agent-Ready Websites on the Internet
We just shipped nine agent-readiness features to findutils.com in one sitting: RFC 8288 Link headers, RFC 9727...
AI AgentsMCPGEO
Developer
160+ AI Coding Tips You Can Practice Right Now — No Setup Required
Reading documentation is the slowest way to learn an AI coding tool. We built a playground where you type prom...
AI CodingClaude CodeGitHub Copilot
Security
Understanding IP Addresses: A Complete Guide for 2026
From finding your public IP to understanding IPv4 vs IPv6, geolocation accuracy, and VPN protection. A practic...
IP AddressNetworkPrivacy
Developer
Stop Wasting Time Finding Testnet Faucets — We Built a Directory
Blockchain developers waste hours finding working testnet faucets. We built a searchable directory of 20+ fauc...
BlockchainDeveloper ToolsWeb3
Security
Why Your Website Is Invisible to Search Engines and AI Bots (And How to Fix It)
A misconfigured Cloudflare rule blocked our entire site from Google, Bing, and every AI crawler for months. He...
SecuritySEOCrawlers
Developer
x402: The HTTP Payment Protocol That Lets AI Agents Pay for APIs
x402 is an open payment protocol that activates the HTTP 402 Payment Required status code for programmatic API...
Developer Toolsx402Web3
Developer
npm Supply Chain Attacks: How to Secure npm install With Docker Sandboxing
After the axios RAT incident, every npm install is a gamble. Docker sandboxing adds 12 security layers between...
NPM SecurityDockerSupply Chain
Developer
Yolobox: Run AI Coding Agents Safely Inside Containers
AI coding agents work best without permission prompts, but unrestricted access risks catastrophic accidents. Y...
AI AgentsDockerDeveloper Tools
Design
Best Image Compression Tools Compared (2026): Online Options Ranked
We compressed the same set of photographs through 7 popular image compression tools and compared file sizes, v...
ImagesImage CompressionWeb Performance
Developer
PlantUML vs Mermaid: Which Diagram-as-Code Tool Should You Use in 2026?
PlantUML and Mermaid are the two most popular diagram-as-code tools, but they solve different problems. This 2...
Developer ToolsUMLDiagrams
Developer
How to Create an apps.json for wvw.dev (World Vibe Web) — The Complete Guide
World Vibe Web (wvw.dev) is a distributed app store for vibe-coded projects. To get listed, you need an apps.j...
Developer ToolsJSONApp Store
Financial
KKTC Exchange Rates: How to Get the Best Currency Rates in Northern Cyprus
Northern Cyprus uses the Turkish Lira alongside GBP, EUR, and USD. Rates vary widely between exchange offices....
Productivity
20+ Free Teacher Tools — Lesson Plans, Rubrics & Classroom Management Without Paying
Kahoot costs $3-25/month. MagicSchool AI charges $12.99/month. Education.com limits free teachers to 3 downloa...
Teacher ToolsEducationLesson Plans
Generators
30+ Free Content Creator Tools — Social Media, Video & Audio Without Subscriptions
Buffer costs $5/month per channel. Hootsuite starts at $99/month. Later killed its free plan entirely. FindUti...
Content CreatorSocial Media ToolsVideo Tools
Design
25+ Online Design Tools — Color, Image Editing & CSS Generators Without Signup
Canva costs $12.99/month. Adobe Express costs $9.99/month. Coolors Pro costs $5/month. FindUtils offers 25+ fr...
Design ToolsColor ToolsImage Editing
Developer
Free Developer Tools That Replace Paid Software — 60+ Browser-Based Utilities
DevUtils costs $39. Postman just killed free team plans. Most online formatters are plastered with ads. Here a...
Developer ToolsJSONRegex
Security
30 Online Security Tools — Password, Encryption & Privacy Checks Without Signup
Most security tools ask you to upload sensitive data to their servers — passwords, encryption keys, SSL certif...
Security ToolsPassword ToolsEncryption
Financial
29 Free Financial Calculators Online — No Signup, No Data Collection
Most financial calculator sites are lead-gen funnels that harvest your data and sell it to financial advisors....
Financial ToolsCalculatorsMortgage Calculator
Productivity
40+ Free Productivity Tools for PDF, Spreadsheets, and Time Management
Stop paying for Adobe Acrobat, Smallpdf, or iLovePDF subscriptions. Here are 40+ free productivity tools that...
ProductivityPDF ToolsSpreadsheet Tools
Productivity
Best Free Academic Tools for Students in 2026: Write Better Papers Without Spending a Dime
Students spend up to $1,400/year on academic tools they could get for free. Here are the best free citation ge...
Academic ToolsStudent ToolsCitation Generator
Developer
How to Inspect and Debug GLTF/GLB 3D Models Online
A practical guide for game developers, web developers, and 3D artists who work with GLTF/GLB files. Covers com...
Developer Tools3DGame Dev
Developer
Euler Angles vs Quaternions: Understanding 3D Rotations Explained
Euler angles and quaternions are the two dominant ways to represent 3D rotations in games, robotics, and graph...
Developer Tools3D GraphicsGame Development
Design
PBR Materials Guide: A Visual Walkthrough for Game Artists
A practical visual guide to Physically Based Rendering materials for game artists and 3D creators. Covers all...
Design Tools3DGame Development
Calculators
3D Vector Visualizer: See Linear Algebra Operations in Action
Linear algebra clicks when you can see it. This guide shows how to visualize dot products, cross products, pro...
CalculatorsMathLinear Algebra
Developer
4 Command-Line Tools You Can Now Use in Your Browser
Four essential command-line tools — chmod, sed find/replace, sort | uniq deduplication, and glob pattern match...
Developer ToolsLinuxCommand Line
Generators
8 New Fuzzy Search Tools — Find Emojis, Icons, Colors, Shortcuts and More
8 new tools powered by fuzzy search: find emojis, country info, HTML entities, font icons, keyboard shortcuts,...
New ToolsFuzzy SearchProductivity
Developer
3 Developer Reference Tools You Need Bookmarked in 2026
Every developer Googles HTML entities, HTTP status codes, and MIME types multiple times a week. Here are 3 fre...
Developer ToolsHTMLHTTP
ProductivityStreamlining HR Onboarding: Merging Employee Handbooks with Personalized Offer Letters
Discover how merging essential documents like handbooks and offer letters can transform your HR onboarding pro...
GeneralHow to Insert Supplemental Graphics and Charts Directly into Existing PDF Reports
Updating static PDF reports with fresh visuals doesn\'t require the original source file. Discover how to use...
ProductivityHow to Create Interactive PDF Table of Contents for Long-Form Manuals
Long manuals are difficult to navigate without structure. Discover how to create an interactive PDF Table of C...