How to Format HTML Online: The Fastest Way to Beautify Messy Code

Why HTML formatting matters

Readable HTML makes code reviews faster, diffs cleaner, and onboarding easier. But hand-formatting nested tags is tedious — and copy-pasting into an IDE just to auto-format wastes time.

Format HTML in seconds with HTMLToolz

The HTML Formatter on HTMLToolz reformats any HTML — minified, hand-written, or templated — instantly in your browser. Paste your markup, click Format, and copy clean, indented HTML back.

• 2-space or 4-space indentation (your choice)
• Handles inline vs. block elements correctly
• Preserves <pre> and <script> blocks
• 100% in-browser — nothing is sent to a server

Step-by-step: format HTML online

1. Go to htmltoolz.com/tools/html-formatter
2. Paste your HTML into the left pane
3. Click Format (or press Ctrl+Enter)
4. Copy the formatted output from the right pane

Common use cases

Unminifying production HTML

Minified HTML from a build tool is unreadable for debugging. Paste it into the formatter to get indented markup you can actually read.

Cleaning up email templates

HTML emails collapse whitespace aggressively. Formatting first helps you spot unclosed tags before sending.

Code reviews and pull requests

Formatted HTML produces cleaner diffs — reviewers see structural changes, not noise from re-indentation.

Keyboard shortcut tip

Every transform tool on HTMLToolz fires on Ctrl+Enter (or Cmd+Enter on Mac). No mouse needed once you've pasted.

Other tools you might need

• HTML Minifier — strip whitespace for production
• HTML Validator — check for syntax errors
• HTML Tag Stripper — extract plain text from markup