Built and fact-checked by the DocNectar team — see our editorial standards
Key Features
Instant Calculation
Get accurate results in real time with our optimized algorithm.
Mobile Friendly
Fully responsive design. Works on all devices & screen sizes.
Privacy Focused
Your data stays on your device. We don't store any inputs.
100% Free
No hidden costs. This tool is completely free forever.
Minified or poorly-indented HTML is hard to read and debug — this tool re-indents it based on tag nesting so the structure is easy to follow again.
This tool formats HTML by tracking how deeply each tag is nested and indenting accordingly.
How it works
Paste your HTML. The tool collapses any existing whitespace between tags, then re-indents everything from scratch: each opening tag increases the indent level for what's inside it, and each closing tag decreases it back, while void tags like <br> and <img> don't affect indentation.
- Enter hTML input.
- Click Calculate to see your results.
Examples
Formatting a minified snippet
<div><p>Hello</p></div> becomes a properly indented three-line block, with <p> nested one level inside <div>.
Who should use it
- Making minified or copy-pasted HTML readable again for debugging.
- Cleaning up markup before sharing it with a teammate.
Industry applications
- Web development
- Front-end debugging and code review
Advantages
- Instantly turns minified HTML into a readable, indented structure.
- Recognizes common void tags so indentation stays accurate.
Limitations
- A simple tag-based indenter, not a full HTML parser — unusual markup may not format perfectly.
Common mistakes to avoid
- Pasting invalid or mismatched HTML and expecting the formatter to fix structural errors — it only re-indents, it doesn't validate.
- Expecting perfect formatting on very unusual or deeply nested markup — this is a simple indenter, not a full parser.
Best practices
- Use this for a quick readability pass on minified or copy-pasted HTML — for production-grade formatting with full edge-case handling, a dedicated build-tool formatter is more thorough.
Tips
- If a large document doesn't format quite right, try formatting it in smaller sections — isolating a section makes it easier to spot which tag is causing unexpected indentation.