HTML Formatter
Paste HTML and get it neatly indented. Inline elements stay on one line; <pre> content is never touched.
Runs in your browser — nothing is uploadedFormatted HTML
How to use HTML Formatter
- Paste HTML or open a file.
- Choose the indentation.
- Copy the formatted HTML.
Formula & assumptions
- Runs entirely in your browser — your code is never uploaded.
Questions
Will formatting change how the page looks?
Whitespace between block elements doesn’t affect rendering, and whitespace-sensitive content (<pre>, <textarea>) is preserved exactly.
Does it fix broken HTML?
It tolerates missing closing tags and nests what it can, but it doesn’t validate. Unclosed elements are closed at the end of their parent.
Can it format CSS and JavaScript inside the page?
Embedded <style> and <script> blocks are re-indented as a block; their code itself is left as written.