HTML Beautifier
Turn messy or minified HTML into clean, properly indented markup.
How to use the HTML Beautifier
- Paste your HTML on the left.
- The formatted version appears on the right.
- Copy the tidy HTML.
About the HTML Beautifier
The HTML Beautifier takes messy, inconsistent or minified markup and rewrites it as clean, properly indented HTML. Paste your source on the left and the formatted version appears on the right, with each nested element placed on its own line and indented to reflect its depth. Tangled one-line templates and machine-generated output suddenly become something you can actually read and review.
Under the hood it uses js-beautify, the same well-established formatting library built into many popular code editors and IDEs. That means the indentation rules are battle-tested and predictable rather than a homegrown guess, so the output matches what developers are used to seeing across their tooling.
Formatting runs entirely in your browser, so your markup is never uploaded. Once it looks right, copy the tidy HTML back into your project. When you are ready to ship, the HTML Minifier compresses it again, and for the styles and scripts alongside your markup try the CSS Beautifier.
Frequently asked questions
What library does the beautifier use?
It uses js-beautify, the same widely adopted formatting library built into many code editors and IDEs. Its indentation rules are well established and predictable rather than a custom, one-off implementation.
Does beautifying change what my page does?
No. It only adds whitespace and line breaks to make the markup readable. The elements, attributes and content are unchanged, so the rendered page behaves exactly as before.
Can it clean up minified HTML?
Yes. That is a core use case. Paste a compressed, single-line document and it is re-indented into a clear, nested structure you can read and edit comfortably.
Is my HTML uploaded to a server?
No. All formatting happens in your browser, so nothing you paste leaves the page. That makes it safe for internal templates and unreleased markup.
How do I compress the HTML again afterwards?
Once you have finished editing, run the result through the HTML Minifier to strip comments and whitespace for production, which reverses the readability trade-off of beautifying.