How does the minifier preserve whitespace inside and tags?

Whitespace-sensitive elements are extracted and stashed using unique non-conflicting tokens before whitespace normalization, and restored verbatim afterwards to prevent layout or text bugs.

Are Internet Explorer conditional comments preserved during minification?

Yes. Conditional comments like are recognized and protected from comment removal.

Does the formatter support HTML snippets without or tags?

Yes. The formatter accepts both full HTML5 documents and partial markup snippets.

Is my HTML markup sent to a server?

No. All formatting and tokenized minification run strictly within your browser using client-side JavaScript.

Dev Tools

HTML Formatter & Minifier

Beautify or minify HTML markup while preserving whitespace tags.

100% Private & Client-Side Execution

Zero server uploads. Your HTML code and confidential templates remain 100% private.

About HTML Formatter & Minifier

HTML Formatter & Minifier provides precision formatting and safe minification for HTML markup. In Format mode, it re-indents nested elements and tag hierarchies using js-beautify. In Minify mode, it employs a safe tokenized engine that compresses structural whitespace and removes comments while strictly preserving the verbatim whitespace of sensitive tags such as <pre>, <textarea>, <script>, and <style>.

How to Use HTML Formatter & Minifier

Paste your HTML markup into the editor or click "Load sample".
Select "Format & Beautify" to indent nested tags, or "Minify & Compress" to optimize markup size.
In Format mode, configure indentation (2 or 4 spaces) and empty line preservation.
In Minify mode, toggle comment stripping (preserves conditional comments and code blocks).
Click "Copy" or "Download .html" to export your processed HTML document.

Common Real-World Use Cases

Web Developers: Clean up messy, generated, or legacy HTML templates for improved maintainability.
Email Designers: Minify HTML email templates to stay safely under Gmail 102KB message clipping limit.
Content Publishers: Clean up messy HTML copied from rich-text editors and CMS backends.
Performance Engineers: Compress HTML snippets before embedding them into production web applications.

Technical Specifications & Limitations

Supports HTML5 documents, XHTML, template snippets, and embedded SVG/CSS/JS. Operates entirely in browser memory.

Frequently Asked Questions

How does the minifier preserve whitespace inside <pre> and <textarea> tags?: Whitespace-sensitive elements are extracted and stashed using unique non-conflicting tokens before whitespace normalization, and restored verbatim afterwards to prevent layout or text bugs.
Are Internet Explorer conditional comments preserved during minification?: Yes. Conditional comments like <!--[if IE]> are recognized and protected from comment removal.
Does the formatter support HTML snippets without <html> or <body> tags?: Yes. The formatter accepts both full HTML5 documents and partial markup snippets.
Is my HTML markup sent to a server?: No. All formatting and tokenized minification run strictly within your browser using client-side JavaScript.