The HTML Formatter cleans up and beautifies HTML with consistent indentation, and can validate and minify it too. Paste messy, minified, or auto-generated HTML to make it readable again, or compress it for production in one click.
Well-formatted HTML is far easier to read, debug, and review — proper nesting shows you at a glance which tags are open, where a section begins and ends, and whether anything is out of place. This tool reformats the whole document instantly in your browser, so nothing you paste is ever uploaded to a server.
How to format HTML
- Paste your HTML into the input area.
- Format it for clean indentation, or minify it to reduce size.
- Review any validation warnings about the structure.
- Copy or download the result.
Beautify vs. minify
Formatting (or “beautifying”) re-indents your HTML with one level of nesting per element and puts tags on their own lines, which is what you want while writing, reviewing, or debugging code. Minifying does the reverse: it strips unnecessary whitespace, line breaks, and indentation to make the file as small as possible, which is what you want when shipping to production so pages download and parse faster. This tool does both, so you can keep a readable source copy and generate a compact build version from the same markup.
Catching structural problems
Messy HTML often hides bugs — an unclosed <div>, a tag nested in the wrong place, or a stray closing tag can break your layout in ways that are hard to spot in a wall of unindented code. Reformatting makes these obvious because the indentation stops lining up where the structure is wrong, and the validation warnings point you to the tags that need attention. It is a quick first step when a page renders incorrectly.
When to use an HTML formatter
Reach for it when you have copied minified HTML from a live page and need to understand it, when a CMS or email builder has produced tangled markup, when you are pasting a snippet into documentation and want it clean, or before committing code so your diffs stay readable. Because it runs entirely client-side, it is also safe for HTML that contains private content — nothing leaves your browser.
Frequently Asked Questions
How do I beautify HTML?
Paste your HTML and the formatter re-indents it with proper nesting so it’s easy to read and edit.
Can it minify HTML?
Yes, it can also strip whitespace to produce compact HTML for faster loading.
Does it validate HTML?
The tool highlights structural issues so you can spot unclosed or misplaced tags.
Is the HTML formatter free and private?
Yes, it’s free and processes everything locally in your browser.