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HTML Formatter Online — Beautify HTML Code

Fast alignment and formatting of HTML, CSS, JavaScript and TypeScript code offline.

🔒 Processed entirely in your browser — nothing you enter here is ever uploaded.

The result appears on this page after you run the tool. Nothing you enter is uploaded.

Processing... 0%
Parsing code structure
Building abstract token tree
Validating syntax syntax
Formatting indents and spaces
Compiling beautified code

Result

About this tool

This page opens the code formatter with HTML preselected as the language — paste your markup, pick the indent style and get cleanly nested HTML back.

An HTML formatter rebuilds the indentation of tags so the document's structure becomes visible again — invaluable after copying minified markup, template output or code lifted from a web page.

The full tool also formats CSS, JavaScript/TypeScript and JSON — all processing happens locally in your browser, so proprietary code never leaves your machine.

Example. CSS input div{color:red} with a two-space indent is rewritten as a braced block with the declaration on its own indented line.

Limit. Formatting covers HTML, CSS and JavaScript/TypeScript indentation only, and it does not repair invalid syntax.

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Category overview

Accepted Formats & Rules

  • Processes text payloads up to 5MB smoothly.
  • Fast parsing: Normalizes spacing, braces, and line breaks in milliseconds.
  • Instant clipboard copy and raw source code download integrations.