HTML Formatter
Clean and format HTML code so it is easier to scan and review. Paste your code, click format, then copy the output for commits or review.
HTML Formatter
SIMILAR TOOLS
What this does
So you are staring at a block of HTML where the tags run together with no indentation, and working out what is nested inside what is a headache. This sorts it out. Drop in your HTML, hit Format, and the structure comes back indented so the nesting is obvious.
How to use it
- Paste your HTML into the box.
- Hit Format.
- Copy the formatted markup with the Copy button.
How it works
This one is powered by Prettier, a well known code formatter, using its HTML parser. Prettier reads your markup, understands the tags and how they nest, and prints it back out with consistent indentation and line breaks. Because it parses the HTML rather than just shuffling text around, the result follows the actual structure of your document. The formatting runs locally in your browser, so your markup never leaves your machine.
Why a tidy layout helps
The win here is being able to see the shape of your document. When elements are nested several levels deep, a parent and its children lined up at the right indentation tell you instantly where a section begins and ends, which is hard to spot in a flat wall of tags. It also makes reviewing changes easier, since a tidy, consistent layout produces clean diffs where the real change stands out instead of being buried in formatting noise.
One thing to keep in mind: because Prettier parses your HTML, badly broken markup, like a tag that is never closed, can trip it up. If it cannot make sense of the input, it will say so rather than guess.
Questions people ask
Does it change my HTML content?
No. It only adjusts indentation and line breaks. Your tags, attributes, and text stay the same.
Why did it report a problem with my markup?
Prettier reads the structure of your HTML, so if something is seriously malformed, such as an unclosed tag, it may not be able to format it until that is fixed.
Can it handle a whole page?
Yes. Paste as much or as little as you like, from a single element to a full document, and it will lay the lot out.
Is my markup sent anywhere?
No. The formatting happens in your browser, so the HTML stays with you.
References
- Prettier. An opinionated code formatter. https://prettier.io/
- MDN Web Docs. HTML: HyperText Markup Language. https://developer.mozilla.org/en-US/docs/Web/HTML
Sugam Baskota is a senior software engineer and Computer Science graduate from UT Arlington, with interests in user scripts, browser extensions, developer tooling, and productivity systems. He spends time building practical utilities and extensions in the kinds of workflows Eon is designed to simplify. At Eon Tools, he reviews useful, password, and developer tools.