Minified HTML appears here
Paste HTML and click Minify// compress HTML to reduce page load time
Compress HTML by removing whitespace, comments, and redundant attributes. See exact byte savings, line reduction, and download the minified result instantly — free, no sign-up.
Minified HTML appears here
Paste HTML and click MinifyPaste any HTML — a full page, a template, a component, or a static site page. The tool handles complete documents and fragments equally well.
Select which minification passes to apply using the toolbar toggles. Comment removal and whitespace collapsing deliver the biggest savings with no risk.
Copy the minified output to clipboard or download it as an .html file. The savings banner shows the exact byte reduction and percentage.
HTML Minifier removes all unnecessary characters from HTML without changing how browsers parse or render the document. It strips comments, collapses whitespace between tags, removes optional attributes like type="text/javascript", and optionally minifies inline <style> and <script> blocks too — entirely in your browser, free.
No. HTML minification removes characters that are irrelevant to the browser's parser — excess whitespace between tags, developer comments, and redundant attribute values. The resulting document is parsed identically to the original by all modern browsers. The visual layout, functionality, and SEO of the page are completely unaffected.
In almost all cases, yes. HTML comments (<!-- ... -->) are ignored by browsers and have no effect on rendering. The exception is Internet Explorer conditional comments (<!--[if IE]>), which this tool preserves. If your project uses HTML comments as code markers for a framework or template engine, disable comment removal and strip them in your build pipeline instead.
The HTML specification defines several attributes that have default values and are optional on certain elements. The most common are type="text/javascript" on <script> tags and type="text/css" on <style> tags, both of which default to those exact values. The tool also removes charset="UTF-8" from <meta> tags when it is redundant.
HTML browsers treat multiple consecutive whitespace characters (spaces, tabs, newlines) as a single space when rendering text. Whitespace collapsing replaces sequences of whitespace between tags with a single space or removes them entirely. This is the largest single source of byte savings in most HTML files. Pre-formatted elements like <pre>, <textarea>, and <code> are automatically excluded from whitespace changes.
The savings depend heavily on the source. Hand-written HTML with lots of indentation and comments typically compresses 20–40%. Template engine output with minimal whitespace might save 5–15%. Files that already have CSS and JavaScript bundled separately compress less than files with inline styles and scripts. Enabling all options maximises savings.
No. Minified HTML is much harder to read and debug in browser DevTools. Minification should be a build step that runs in your CI/CD pipeline before deploying to production. For local development, always work with readable, formatted HTML. This tool is best used for one-off manual minification or as a quick way to see how much a file could be compressed.
Every byte of HTML that a browser downloads contributes to page load time. While HTML is typically much smaller than CSS and JavaScript files, minifying it can still produce meaningful reductions — particularly on pages with heavy indentation, developer comments, or large amounts of template-generated markup. HTML minification is a zero-risk optimisation: it produces a document that renders identically while transferring fewer bytes over the network.
HTML minification removes or shortens characters that are not needed by the browser parser. The main passes are: removing HTML comments, collapsing whitespace sequences between tags to a single space or nothing, removing optional closing tags for elements like <li> and <tr>, removing redundant attribute values like type="text/javascript" and type="text/css", and stripping attribute quotes where the value does not require them. Each pass is optional and can be enabled or disabled independently.
Whitespace collapsing is the most impactful single pass for most HTML files. A deeply indented template can have hundreds of leading spaces on every line, all of which the browser ignores when rendering. Collapsing multiple whitespace characters to a single space — or eliminating them entirely between block elements — can reduce file size by 20–30% without any rendering change. The minifier always protects whitespace inside <pre>, <textarea>, <script>, and <style> tags where whitespace is significant.
Pages that embed CSS inside <style> tags or JavaScript inside <script> tags carry inline code that can itself be minified. The inline CSS pass removes comments, collapses whitespace in property declarations, and strips redundant semicolons. The inline JavaScript pass removes single-line and multi-line comments and collapses whitespace in the script body. These passes are more aggressive than HTML whitespace collapsing and should be tested before deploying.
HTML minification is most valuable for static sites, email templates, and server-rendered pages where the HTML is sent directly to the browser without client-side processing. For single-page applications built with React, Vue, or Angular, the bundler handles most of this automatically and the initial HTML shell is already minimal. For CMS-driven sites like WordPress, a plugin like WP Rocket or W3 Total Cache handles minification server-side on every request, making a manual tool like this most useful for testing and preview.