HTML source formatter

Edit HTML as text with conservative block-tag formatting.

How it works and limits

Adds line breaks between adjacent block tags. Preserves text, quoted attributes, comments and pre, textarea, script and style contents. This is not full HTML5 validation or sanitization: output may contain dangerous markup. Source is never executed or previewed. Review exported HTML before opening it. Maximum 100,000 characters and 10,000 tokens.

Worked example

source: <main><section><h1>Hello</h1><p>Safe source editing.</p></section></main>

Inputs start empty. Load example fills them only when you choose it. Reset clears inputs and results.

This tool runs locally. When enabled, Google manages regional privacy choices. Google code can access this page and its inputs.

HTML source formatter

Source

Output