HTML Minifier & Beautifier
Compress HTML for production or format messy markup into readable code — instantly, safely, and fully client-side.
HTML Minifier & Beautifier compresses HTML by stripping comments, collapsing whitespace, and removing attribute quotes where safe, or reformats messy HTML into clean, indented code. Script, style, textarea, and pre content are always left untouched so nothing breaks. Runs entirely in your browser. Made by FreeToolHub.
HTML Input
Output
Frequently Asked Questions
Is my HTML uploaded anywhere?
No. Minifying and beautifying both run locally in your browser using JavaScript. Your markup is never sent to a server, so private or unreleased code stays private.
What does minifying actually change?
It removes HTML comments, collapses runs of whitespace between tags and inside text down to a single space, and removes quotes from attribute values when the value has no spaces or special characters (for example class="card" becomes class=card), which is valid HTML5. Internet Explorer conditional comments are always kept since they affect page behavior.
Will minifying break my page?
It is built to be safe by default. The contents of <script>, <style>, <textarea>, and <pre> elements are always copied through untouched, since collapsing whitespace there could change JavaScript behavior, break CSS, or alter text a user is meant to see exactly as written.
What is the difference between minify and beautify?
Minify produces the smallest possible output for production, with comments removed and whitespace collapsed. Beautify does the opposite: it takes minified or messy HTML and reformats it with one element per line and consistent 2 or 4-space indentation, which is useful for reading or debugging someone else's markup.
Does it minify the CSS inside <style> or the JavaScript inside <script>?
No, that content is left exactly as written to avoid any risk of changing behavior. Use FreeToolHub's dedicated CSS Minifier for the contents of <style> blocks and stylesheets.
Is there a file size limit?
There is no fixed limit. Since everything runs in your browser, performance depends on your device, but typical HTML pages of several hundred kilobytes process instantly.