How to use HTML Formatter & Beautifier — Indent HTML Online Free
- 1Paste your HTML into the left-hand box.
- 2The formatted version appears on the right, properly indented.
- 3Copy it, or download it as a file.
About HTML Formatter
Minified HTML is unreadable by design, and view-source on most production sites returns exactly that. This formatter puts the structure back: one element per line, one indent level per depth, so you can actually see what contains what.
The detail that separates a useful formatter from an annoying one is void elements. An <img> or a <br> has no closing tag, so treating it as an opening tag pushes everything after it one level deeper and the indentation becomes meaningless within a few lines. Those are recognised and left flat.
As with the minifier, <pre>, <textarea>, <script> and <style> are parked before any reformatting and restored afterwards, so code samples and inline scripts come back exactly as they went in.
Frequently asked questions
Does formatting change what the page renders?
Only whitespace changes, and only where it is not significant. Preformatted regions are preserved, so the rendered output stays the same.
How are void elements handled?
Tags that never have a closing partner — img, br, input, meta, link and the rest — do not open a new indent level, which is what makes the output actually readable.
Can it fix broken HTML?
No. It indents what you give it; it does not repair unclosed tags or mismatched nesting. If the indentation comes out strange, that is usually a genuine nesting error worth looking at.
Can I go back to minified?
Yes, the minifier reverses it. Formatting and minifying are lossless in both directions for the whitespace they touch.
Will it break my code?
For CSS and HTML, no. Only whitespace and comments are removed, and the contents of <pre>, <textarea>, <script> and <style> are preserved exactly as written. If the output ever differs from the input in any way that matters, that is a bug worth reporting.
Is it free?
Yes — unlimited use, no sign-up and no file-size cap beyond what your browser can hold in memory.