HTML Formatter
Beautify and format HTML code with custom indentation, instantly in your browser.
HTML Formatter Features
Fast, private HTML formatting directly in your browser.
Correctly handles block vs inline elements, void tags, and nesting depth.
Format any size HTML snippet instantly. No waiting, no server round-trip.
Your HTML never leaves your device. 100% private, no upload needed.
How to Convert Files
Upload your files, select output format, and download converted files instantly. Our converter supports batch conversion and maintains high quality.
Frequently Asked Questions
What is HTML formatting?
HTML formatting (beautifying) reorganizes HTML code with consistent indentation so that nested elements are visually indented under their parents.
This makes it much easier to understand the document structure and find specific elements.
Formatted HTML is functionally identical to the original — browsers render both the same way.
How is this different from HTML Minifier?
The HTML Minifier removes whitespace to make files smaller for production. The HTML Formatter does the opposite.
Use the formatter during development when you want to read and edit the code.
Use the minifier before deploying to production to reduce page load times.
Does it handle self-closing and void tags?
Yes. Void tags like br, img, input, meta, and link are handled correctly — they are not given a closing indent level.
Self-closing tags (like SVG elements with />) are also handled correctly.
The formatter follows the HTML5 specification for which elements are void.
Can I use tabs instead of spaces?
Yes. Select 'Tab' from the indent dropdown to use tab characters.
Tabs are preferred in some code bases where editors are configured to display them at a specific width.
2 or 4 spaces are the most common convention for HTML files.
Does it work with HTML fragments?
Yes. You can paste any HTML snippet — a single div, a table, or a full page.
A full doctype declaration is not required.
The formatter will indent from the first tag it encounters.
What about Jinja, PHP, or template tags?
Template tags like {{ }} or are treated as text content and preserved as-is.
The formatter only operates on HTML tags, not template syntax.
The structure of the HTML will still be formatted correctly around the template tags.
Is there a file size limit?
There is no hard limit. The formatter runs in your browser and is limited only by available memory.
Typical HTML files of a few hundred kilobytes format in milliseconds.
For very large files consider splitting them into sections first.
Is my data private?
Yes. All HTML processing happens entirely in your browser. No data is sent to any server.
This makes the tool safe to use with proprietary templates or internal tooling HTML.
We do not log, store, or transmit any content you paste into the tool.