Format, minify, and validate HTML snippets locally in your browser. Useful
for debugging templates, generated markup, copied DOM fragments, and email
HTML without sending code anywhere.
How to Use This HTML Formatter
Paste your raw or minified HTML into the input panel.
Choose the indentation width if you want formatted output.
Click Format, Minify, or Validate.
Copy, download, or share the result if needed.
Formatting vs Validation
Formatting makes markup easier to read. Validation looks for parser
issues and structural problems. They support each other, but they are
not the same workflow.
This page is designed for fast local debugging. It will normalize and
inspect HTML, but it does not claim full standards compliance across the
entire web platform.
Features
✓ Format and minify HTML locally
✓ Parser-error reporting for common issues
✓ Copy, download, and share actions
✓ Indented output for code review and debugging
✓ No server uploads
✓ Useful for snippets, templates, and generated markup
Frequently Asked Questions
? Does this tool fully validate HTML against every web standard?
No. This tool is aimed at practical parser-level validation and formatting, not exhaustive standards-conformance testing. It is useful for debugging and cleanup, but it is not a replacement for a full external validation suite.
? Can I format and minify HTML here?
Yes. You can prettify HTML for readability, minify it for compact output, or run a validation pass to inspect parser issues.
? Why can broken HTML still produce formatted output?
Browsers and HTML parsers often recover from malformed markup so the page can still render. That recovery is helpful for debugging, but it does not mean the source was originally correct.
? Is the HTML sent to a server?
No. All parsing and formatting happens in your browser.