How to Compress HTML Whitespace
HTML Whitespace Compression
What This Tool Does
Removes HTML comments and insignificant whitespace between tags. Tag structure, attributes, and text content are preserved. Literal content inside <pre>, <textarea>, <script>, <style>, and <code> blocks is left unchanged.
What It Does Not Do
- Remove optional tags or shorten boolean attributes
- Minify inline CSS or JavaScript the way html-minifier does in build pipelines
- Entity-encode content — use HTML Encode for that
- Validate HTML — always review output before production use
Compress vs Format
Use Compress for smaller one-line output. Use Format when you need readable markup for debugging or code review. For production pages, prefer your bundler or static-site minifier and measure gzip size separately.
Frequently asked questions
Is this the same as a production HTML minifier?
No. It only removes comments and extra spacing between tags. Build tools also optimize attributes, inline assets, and optional markup.
Will compress change how browsers render the page?
Usually not for normal markup. Whitespace between tags is insignificant. Content inside pre, textarea, script, style, and code blocks is preserved.
Are HTML comments removed?
Yes, outside of protected script and style blocks. Conditional IE comments are also removed — keep a backup if you still rely on them.