HTML Minifier — Free Online HTML Compressor & Minify Tool
Free online HTML minifier. Strip whitespace, comments, and line breaks from HTML to reduce file size and improve page load speed — runs entirely in your brow...
To minify HTML, paste your code into Input HTML; comments and extra whitespace are stripped instantly while pre, textarea, script and style content keeps its line breaks, and Minified HTML shows the result and the size saved.
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HTML Minifier — Free Online HTML Compressor & Minify Tool. Free online HTML minifier. Strip whitespace, comments, and line breaks from HTML to reduce file size and improve page load speed — runs entirely in your browser.
Our free HTML minifier instantly compresses your HTML code by stripping whitespace, comments, and unnecessary line breaks. See the original vs. minified size with percentage saved — a must-have tool for Core Web Vitals optimization and faster page loads.
For the reverse, use our HTML Formatter to beautify code for debugging. All HTML compression runs entirely in your browser — your source code and templates never leave your device. No sign-up, no uploads, no rate limits.
Related tools: CSS Minifier, HTML Formatter, HTML Entities. Our free HTML minifier compresses your HTML code by removing whitespace, comments, and unnecessary line breaks — reducing file size while preserving structure and functionality. Shows original vs.
minified size with percentage saved. Companion tool: HTML Formatter to beautify code for debugging.
Use Cases Reduce HTML payload size to improve Core Web Vitals and page speed Compress HTML email templates before sending Strip comments and whitespace before deploying to production Optimize landing pages for faster loading Related: HTML Formatter , CSS Minifier , HTML Entities .
Frequently asked questions
How do I minify HTML online?
Paste your markup into the Input HTML box. The Minified HTML panel updates as you type, and its header shows the percentage saved and the new size next to the original size. Click Copy to copy the minified code, or Clear to start over.
What does the HTML minifier remove?
It removes HTML comments (conditional comments are kept), collapses runs of whitespace and line breaks in text into a single space, removes whitespace around block-level tags such as div, p, li and head, and keeps one space between inline elements such as a, b and span so words do not run together. It does not rename attributes, drop optional tags, or minify inline CSS and JavaScript.
Is it safe for pages with inline scripts or pre blocks?
Yes. The content of pre and textarea elements is kept exactly as written. Inside script and style elements only the whitespace at the very start and end is trimmed; line breaks are never joined, so // comments and statements without semicolons keep working. Whitespace inside quoted attribute values is also left alone.
How much smaller will my HTML get?
It depends on how much indentation and how many comments the source contains; already compact markup saves little. The indicator above the output shows the exact percentage and the new size in B or KB, measured in UTF-8 bytes.
Can I undo the minification?
Removed comments cannot be restored, but you can make minified markup readable again with the HTML Formatter tool, which puts tags on separate lines and indents them. Processing runs in your browser, so your code is not uploaded.
How to use this online tool
HTML Minifier — Free Online HTML Compressor & Minify Tool is designed for fast browser workflows when you need to format, validate, convert, decode, encode, generate, or inspect data without opening a heavy desktop app. Start with the input field or visible options, review the result, then copy or download the output for the next step.
Private processing in your browser
HTML Minifier — Free Online HTML Compressor & Minify Tool keeps the normal processing step local in your browser. That is useful for code snippets, tokens, documents, configuration values, text samples, and other material that should not be sent to a remote service unless you explicitly choose to share it.
When this tool is useful
Use HTML Minifier — Free Online HTML Compressor & Minify Tool for repeatable developer tasks, technical documentation, QA checks, quick conversions, debugging, content cleanup, and internal team workflows. The page focuses on clear inputs, immediate feedback, and output that is easy to reuse in code, reports, tickets, emails, or notes.
Practical tips
Before copying the final result, check important details such as spacing, casing, filenames, encoding, token structure, line breaks, or output format. Small checks prevent mistakes when the result is reused in source code, API requests, documentation, spreadsheets, or shared files.