Converter · SOTA DOMParser · HTML5-aware
HTML Formatter & Beautifier
Format or minify HTML with DOMParser-based HTML5 parsing. Pretty-print with configurable indent, preserve whitespace in <pre>/<textarea>/<script>, correct self-closing for void elements.
How to Use HTML Formatter in 3 Steps
- Configure. Paste HTML into the input. DOMParser validates and structures the document tree.
- Process. Pick mode: Prettify (indent nested, one tag per line) or Minify (single line, whitespace-stripped).
- Export. Copy the output. <pre>, <textarea>, <script>, and <style> contents are preserved exactly to avoid breaking code or layout.
Why HTML Formatter on Pixlane
HTML formatting is essential for reviewing template output, normalizing indent across a codebase, or minifying for production. Pixlane uses the browser's native DOMParser — the same engine that parses live web pages — ensuring HTML5 compliance, correct void-element handling, and whitespace preservation in sensitive elements.
- Native DOMParser — Uses the browser's HTML5 parsing engine — same as live pages. No regex hacks, no edge-case failures with malformed markup.
- Void-Element Correct — <img>, <br>, <input>, and other void elements are emitted as self-closing per HTML5 spec. Non-void elements always get closing tags.
- Preserves Sensitive Content — <pre>, <code>, <textarea>, <script>, <style> whitespace is preserved byte-for-byte — no broken code blocks or layout shifts.
- Bidirectional — Same tool prettifies and minifies. Minification strips inter-tag whitespace without touching inline text.
Frequently Asked Questions
Does it handle malformed HTML?
Yes — DOMParser handles what browsers handle. Missing closing tags, misplaced elements, and legacy quirks are corrected to produce a well-formed output. Truly broken markup (e.g., binary data) may produce empty output.
Does it preserve my <script> and <style> tags?
Yes. Content inside <script>, <style>, <pre>, <code>, and <textarea> is preserved exactly. Only the surrounding HTML structure is reformatted.
Is my HTML private?
Yes. All parsing happens via DOMParser in your browser. Your markup — which may contain proprietary templates — never leaves your device.
Is this tool free?
Yes. HTML Formatter on Pixlane is completely free with no signup required.