Format (beautify) or minify HTML and return the result with a tag-balance validation report. Format mode re-indents block tags, keeps inline tags with their text, and leaves pre/code/script/style/textarea content untouched. Minify mode strips comments and whitespace between tags.
This page documents the HTTP endpoint POST /api/tools/html-formatter/execute. See the MCP reference →
Call it over REST
POST https://api.findutils.com/api/tools/html-formatter/execute · no API keys · 60 requests/min per IP
Execute — verified arguments
curl -X POST https://api.findutils.com/api/tools/html-formatter/execute \
-H "Content-Type: application/json" \
-d '{
"html": "<div><p>Hello</p></div>"
}'Parameter schema for this endpoint
curl https://api.findutils.com/api/tools/html-formatterInput schema
| Argument | Type | Required | Description |
|---|---|---|---|
| html | string | yes | The HTML source to format or minify. |
| mode | string (format | minify) | no | format = beautify with indentation, minify = compact. Default: format. Default: "format". |
| indent | integer | no | Spaces per indentation level in format mode (1-8). Default: 2. Default: 2. |
Example arguments (verified)
{
"html": "<div><p>Hello</p></div>"
}Also an MCP tool
Claude, Cursor, and any MCP client can call this tool as
findutils:html_formatter after one connect command.
Connect once
claude mcp add findutils --transport http https://mcp.findutils.com/More Validation tools
Email Validate
Validate an email address and break it into local / domain / TLD parts.
Json Validate
Validate a JSON string.
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,
Phone Format
Format a phone number to E.164 (+CCNNNNNNN…) given an optional country calling code.
State Machine Designer
Validate a finite state machine given as nodes and edges and return a normalized machine config plus issues.
Url Validate
Validate that a string is a well-formed URL and (optionally) require HTTPS.
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.
Xml Formatter
Beautify or minify an XML document and return the formatted text.