What is the difference between beautifying and minifying HTML?

Beautifying adds line breaks and indentation so the nesting is easy to read, which is ideal for editing and debugging. Minifying removes the insignificant whitespace between tags to produce a smaller file for production. Both keep the same rendered result; only the whitespace changes.

Will formatting change how my page renders?

In almost every case, no: the formatter changes whitespace, not elements or text, and pre and textarea content is kept exactly. There are three edge cases. Runs of spaces inside text and attribute values collapse to one space. Beautify can move adjacent inline elements such as a b onto separate lines when they share a parent with a block element, which adds a visible space between them. And text styled with CSS white-space: pre outside a pre tag loses its spacing. Check those spots after formatting.

Does it reformat JavaScript inside tags too?

No. Content inside script and style tags is treated as raw text: the tool re-indents the HTML around it but does not re-indent or rewrite the code, so template literals, regular expressions and CSS values keep their characters. The only change is that leading blank lines and trailing whitespace inside the tag are trimmed. If you need the JavaScript itself formatted, run it through a JavaScript formatter separately.

Does the formatter re-indent broken or unclosed tags?

Yes, within reason. The parser applies the implied-closing rules browsers use for tags like li, p and td, closes open tags when a parent closes, and auto-closes anything still open at the end of the document, then re-indents the result. Each repair appears as a warning such as "Document ended with 1 unclosed tag(s); they were auto-closed." A closing tag with no matching opener is dropped with a "Stray closing tag ignored" warning, so read the warnings before you replace the original.

Is it safe to format HTML that contains sensitive data?

Yes. The parser runs entirely in JavaScript in your browser. No network request carries your markup, nothing is stored, and the tool works offline once loaded. HTML holding internal links, API responses, or unreleased copy never leaves your machine.

What indentation options are available?

Beautify output supports 2 spaces, 4 spaces, or tabs. Two spaces is the common default for web projects, four spaces suits teams that prefer wider indentation, and tabs let each developer set their own display width in the editor.

Is this HTML formatter free?

Yes, it is free, no signup. Each Format or Minify click counts toward a daily usage limit per tool, 10 a day as a guest and 50 a day with a free account. The count records only the mode and options you picked, never the markup you pasted.

Why did tag names or attribute spacing change after formatting?

The formatter normalises tags as it rebuilds them. Tag names are lowercased, so becomes , while attribute names keep their case. Whitespace between attributes collapses to a single space, and so does a run of spaces inside a quoted attribute value, so title="a b" becomes title="a b". Browsers treat tag names the same in any case, but an attribute value where the exact spacing matters should be checked.

How is an HTML formatter different from an HTML minifier?

A formatter has both directions in one tool: beautify to expand markup for reading, and minify to collapse it for shipping. A dedicated minifier only compresses. If you mainly need production compression, the HTML minifier focuses on that; if you switch between reading and shipping, the formatter covers both.

HTML Formatter

Format, beautify, and minify HTML online. Re-indents messy or minified markup, keeps script, style, and pre content verbatim, and runs entirely in your browser.

HTML Input

Indent:

Remove comments

What is an HTML Formatter?

An HTML formatter rewrites HTML markup with clean, consistent indentation so the structure of the document is easy to read. Paste a minified page, a snippet copied out of a build tool, or hand-written markup with mismatched tabs and spaces, and the formatter parses the tag tree and prints it back with one level of indentation per nesting depth. The reverse operation, minifying, strips the insignificant whitespace between tags to shrink the file for production without changing how the browser renders it.

Raw HTML rarely arrives in a state you can scan. Server templates emit it on a single line, bundlers collapse it, and pasted fragments carry whatever spacing the source used. Beautifying exposes the nesting so you can find the element you need, spot a tag that was never closed, or diff two versions cleanly. This matters most when you are debugging a layout, auditing markup for accessibility, or reading someone else's content for the first time. A formatter turns a wall of angle brackets into an outline you can follow.

A worked example shows what this free HTML formatter does with sloppy input. Paste <ul><li>One<li>Two</ul>Hi there, keep Beautify and 2 spaces selected, and click Format. The online HTML formatter closes both list items and the paragraph, puts each li on its own indented line, and keeps Hi there on one line because it is short inline content. The output reads 5 tags, 5 lines, 63 bytes, and two warnings list what was auto-closed, so the HTML code formatter never repairs broken markup silently.

This tool runs 100% in your browser with a dependency-free parser, so nothing you paste is uploaded or logged, and it keeps working offline once the page has loaded. The parser is deliberately tolerant: it applies the same implied-closing rules a browser uses for tags like li, p, td, and option, so real-world markup with omitted end tags still formats correctly. Content inside script, style, pre, textarea, and title is copied verbatim, which means your JavaScript, CSS, and pre-formatted text are never reindented or broken.

How to use the HTML Formatter?

Paste your HTML
Paste any HTML into the input panel, whether it is minified onto one line, indented inconsistently, or a fragment copied from a template. Click Load Sample to start from a small realistic page.
Choose beautify or minify
Pick Beautify to re-indent the markup for reading and editing, or Minify to collapse it to the smallest whitespace-free form for production.
Set indentation and options
Select 2 spaces, 4 spaces, or tabs for beautify output, and optionally remove HTML comments. The document is parsed first, so unclosed tags are reported as warnings.
Copy or download the result
Copy the formatted HTML to your clipboard or download it as an .html file, then drop it into your editor, template, or page.

Key Features

Beautify and Minify
Re-indent HTML with 2-space, 4-space, or tab indentation for readability, or minify it to the smallest whitespace-free form, both from the same tool.
Tolerant Parser
Applies the browser implied-closing rules for tags like li, p, td, and option, so markup with omitted end tags still formats correctly rather than breaking.
Script and Style Preserved
Content inside script, style, pre, textarea, and title is copied verbatim, so your JavaScript, CSS, and pre-formatted text are never reindented or altered.
Inline-Aware Output
Short paragraphs and inline runs like a, strong, and em stay on one line instead of being split tag by tag, so the result reads the way you would write it.

Frequently Asked Questions

Paste the HTML into the HTML Input panel, choose Beautify, pick 2 spaces, 4 spaces or Tab, and click Format. The tool parses the tag tree and re-indents it, even when the input is a single minified line, then lets you copy the result or download it as formatted.html. All processing happens in your browser, so the markup is not uploaded.

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Learn more

Read the full HTML Formatter guide

Command Palette

HTML Formatter

What is an HTML Formatter?

How to use the HTML Formatter?

Paste your HTML

Choose beautify or minify

Set indentation and options

Copy or download the result

Key Features

Beautify and Minify

Tolerant Parser

Script and Style Preserved

Inline-Aware Output

Frequently Asked Questions

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HTML Table Generator

HTML to Markdown

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Markdown to HTML

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Learn more