Pretty-print or minify HTML instantly in your browser, with adjustable indentation.
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Tell us what you think about Format and beautify HTML online.
- Runs entirely in your browser — your HTML is never sent to a server
- Preserves script, style, pre, and textarea contents verbatim
- Free, no account required
How it works
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1
Paste the code or data you want to format.
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2
Choose pretty-print or minify, and set the indent width if you like.
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3
The formatted result updates instantly.
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4
Copy the result, or download it as a file.
Why use this tool
Every dev utility, one place
Format, convert, encode, decode, and generate — no more juggling ten tabs.
100% private, always
Every tool runs in your browser — your code and data are never sent anywhere.
Works on any device
Runs on Windows, Mac, Linux, iOS, and Android — nothing to install.
Instant results
No queues, no build step — results update as you type.
Built to handle real data
Full Unicode support and RFC-compliant parsing, edge cases included.
Free, always
Free to use, with no rate limits, sign-up, or trial period.
Frequently asked questions
Contents inside style and script tags are generally passed over to avoid breaking application logic.
It correctly recognizes self-closing tags and does not erroneously attempt to indent following siblings.
Yes, the contents of preformatted text blocks are strictly ignored by the indentation engine.
It collapses multiple spaces into one outside of text blocks to create a cleaner DOM structure.
It can infer some missing structural tags, but severely broken markup might indent unpredictably.
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JSON is the backbone of web APIs, but syntax mistakes can halt your code. Here is how to identify and fix missing commas, unescaped strings, and trailing characters.
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