A fast, private HTML minifier
When writing code, developers use indentation, line breaks, and comments to keep their HTML readable and organized. However, web browsers do not need this extra formatting to understand and render a web page. This HTML minifier is a fast, browser-based tool that strips out unnecessary characters to reduce your file size.
Because everything runs entirely on your device, your code is never uploaded to a server. You can safely minify HTML online for unreleased websites, proprietary web applications, or confidential client projects without worrying about data privacy. The live preview updates instantly as you type or paste, showing you exactly how much space you have saved.
How to remove whitespace from HTML safely
It is a common misconception that you can just use a simple find-and-replace tool to remove whitespace from HTML. Doing so can accidentally merge words together inside your text or break formatting inside <pre> tags. A true HTML compressor parses the document structure first, ensuring that optimizations are only applied where they are safe.
This tool automatically applies several advanced optimizations to your code:
Whitespace removal: It collapses unnecessary spaces, tabs, and newlines between HTML tags, while carefully preserving the spaces required between words in your visible text.
Redundant attribute removal: In older versions of HTML, it was mandatory to include type="text/javascript" on script tags and type="text/css" on style tags. In modern HTML5, these are the defaults. The minifier automatically strips these redundant attributes to save space.
Boolean attribute collapsing: Attributes like disabled, checked, or readonly do not need a value to function. The tool automatically converts verbose syntax like disabled="disabled" into the much shorter disabled.
Short doctypes: If your code uses a lengthy legacy doctype declaration, the tool will automatically convert it to the standard, highly compact HTML5 <!DOCTYPE html> declaration.
Minifying inline CSS and JavaScript
Many HTML documents are not just structural markup; they also contain embedded styles and interactivity. If your document includes <style> or <script> tags, you can enable the Minify inline CSS/JS option.
When enabled, the tool doesn't just treat the contents of these tags as plain text. Instead, it applies dedicated JavaScript and CSS compression algorithms to those specific blocks. It will shorten variable names, remove CSS comments, and optimize your logic, ensuring that your entire document—not just the HTML tags—is as small as possible.
If you need to preserve copyright notices or open-source licenses, simply check the Keep license comments box. The tool will remove all standard comments but retain any comment that begins with an exclamation mark (for example, <!--! Important License Info -->).
Why you should compress HTML
Every byte counts when optimizing a website for performance. Using an HTML compressor is one of the easiest ways to improve your site's load times and overall efficiency.
Faster page loads: Smaller HTML files download faster. This is especially important for users on slow mobile networks or connections with high latency. The faster the browser receives the HTML, the faster it can start downloading your images, stylesheets, and fonts.
Better search engine rankings: Search engines like Google use page speed as a ranking factor. Serving minified HTML helps improve your Core Web Vitals, which can positively impact your SEO performance.
Reduced bandwidth costs: If you host a high-traffic website, serving uncompressed HTML can waste gigabytes of bandwidth every month. Minifying your code reduces the amount of data transferred from your server, which can directly lower your hosting bills.
While many developers use automated build tools to compress their code before deployment, setting up a build pipeline isn't always practical for quick edits, email templates, or small landing pages. This tool provides an instant, drag-and-drop solution to compress HTML without any configuration.
Related developer tools
If your project uses external files for styling and logic, you should compress those files individually. You can use our dedicated CSS Minifier and JS Minifier for standalone stylesheets and scripts. If you are working with text content and need to safely escape special characters for use inside HTML tags, try the HTML Encode/Decode tool.