HTML Formatter

About HTML Formatter & Beautifier

The HTML Formatter takes unreadable, minified, or hand-written HTML markup and transforms it into clean, consistently indented code using the industry-trusted js-beautify library. It respects nesting depth, handles self-closing tags, and can optionally wrap long attribute lists to improve readability without altering the document's structure or behavior.

Use the minify mode to strip whitespace and comments before deploying to production, reducing HTML payload size. All formatting runs entirely in your browser — your markup is never uploaded to any server, so sensitive templates and internal pages stay private.

Common Use Cases

• Beautifying minified HTML received from a CMS export or build tool before debugging.
• Standardizing indentation style across a team's HTML templates for a consistent codebase.
• Minifying HTML before deployment to reduce page weight and improve load times.
• Quickly checking the nesting structure of a complex email template or web component.

How to Use

1. Paste your HTML markup into the Input panel on the left, or click "Load Example" to try a sample.
2. Choose your preferred indentation (2 or 4 spaces) from the Indent selector.
3. Click "Format" to beautify the code, or "Minify" to compress it for production.
4. Review the stats row for character counts and savings, then click "Copy Output" to grab the result.

Frequently Asked Questions

Does formatting change how my HTML renders in the browser?

No. Beautifying adds whitespace between tags for human readability, but browsers ignore extra whitespace when rendering HTML. The visual output of your page will be identical before and after formatting. Minifying removes that whitespace without changing meaning either.

Is my HTML sent to any server?

Absolutely not. The entire formatting process runs inside your browser using the js-beautify JavaScript library. Your HTML never leaves your device, making this tool safe for internal dashboards, proprietary templates, and sensitive pages.

What is the difference between 2-space and 4-space indentation?

Both styles produce valid, readable HTML. Two-space indentation is more compact — it keeps deeply-nested code from drifting too far to the right, which is popular in modern front-end projects. Four-space indentation is traditional and often preferred in editors where each level should be clearly distinct. Choose whichever matches your project's style guide.