HTML Beautifier
Indent and tidy messy HTML so the structure is easy to read. Free, instant, and private.
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Why use PixelTools' html beautifier
Five languages in one tool
JSON, JavaScript, HTML, CSS, and YAML, switchable in one click without losing what you pasted.
Beautify or minify
Readable output with your choice of 2 spaces, 4 spaces, or tabs, or the smallest possible size.
Instant, live output
The result updates as you type or paste. No button to click and no page reload.
Clear error messages
Invalid JSON, YAML, or JavaScript shows what went wrong and where, instead of failing silently.
Copy or download
Copy the result to your clipboard or save it as a .json, .js, .html, .css, or .yaml file.
100% private
Your code never leaves your browser. Nothing is uploaded, logged, or stored.
Three steps to use the html beautifier
- 1
Paste your HTML
Paste the code into the input box. The language is already set to HTML.
- 2
Choose how to beautify it
Beautify is selected. Pick spaces or a tab for the indent size.
- 3
Copy or download the result
The output updates as you type. Copy it with one click, or download it as a file.
When an HTML beautifier helps
View-source output, email templates, and generated markup tend to arrive as one long line. Indenting by nesting level shows the structure at a glance.
Reading minified production code
Re-indent a minified JavaScript or CSS file so you can follow what it does while debugging.
Shrinking API payloads and config
Minify JSON before embedding it in a request, a fixture, or a environment variable.
Cleaning up pasted snippets
Make code from a forum, email, or chat match a consistent indent before it goes into your project.
Checking a config file
Paste YAML or JSON to confirm it is valid and see its structure laid out properly.
Frequently asked questions
Does the HTML beautifier fix broken markup?
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No. It re-indents what you give it and does not add missing closing tags or correct invalid nesting. If the output looks oddly indented, that often points to a tag that was never closed.
Will it format the CSS and JavaScript inside my HTML?
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Yes. Content inside style and script tags is indented along with the rest of the page.
Can beautifying HTML change how the page looks?
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It can in rare cases. Browsers treat whitespace between inline elements as a space, so adding line breaks there can change spacing slightly. Content inside pre and textarea is left alone.
Is my code uploaded anywhere?
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No. Beautifying and minifying both run entirely in your browser with JavaScript. Nothing you paste is sent to a server, logged, or stored, so it is safe to use on private or unreleased code.
Need a different language?
Or see the full code beautifier & minifier for all five languages.
HTML Beautifier now
Free, instant, no account needed.