Reduce file size, optimize performance. Customize everything!
Consider using WebP format for images to reduce file sizes
Enter or paste your HTML source code into the editor. The tool accepts complete documents, partial snippets, or template files with any amount of whitespace and comments.
Toggle individual options such as removing comments, collapsing whitespace, removing optional tags, minifying inline CSS and JavaScript, and stripping unnecessary attributes.
Click Minify to compress your HTML for production, or switch to Beautify mode to re-indent messy code for development. Both operations run instantly in your browser.
See the original and minified file sizes side by side with the percentage reduction. Copy the result to your clipboard or download it as an HTML file.
Strips all HTML comments including conditional comments, leaving your markup clean and reducing file size without affecting rendering.
Collapses multiple whitespace characters into single spaces and removes unnecessary line breaks while preserving whitespace-sensitive elements like pre and textarea.
Optionally minifies inline style blocks and script tags within your HTML, providing a single-tool solution for page-level optimization.
Displays original size, minified size, bytes saved, and compression percentage so you can measure the impact of each optimization pass.
Runs basic structural checks on your markup, flagging unclosed tags and nesting issues that could cause rendering problems after minification.
Reverses the process—takes minified or messy HTML and reformats it with consistent indentation for development-time readability.
Every kilobyte matters for page load performance, especially on mobile connections. HTML comments, formatting whitespace, and redundant attributes that make source code readable during development add unnecessary bytes in production. Minifying HTML typically reduces file size by 10-30%, which directly improves Time to First Byte and Largest Contentful Paint scores.
While most build tools and CDNs offer HTML minification as part of a pipeline, a standalone minifier is invaluable for quick one-off tasks: optimizing email templates that cannot use a build system, compressing HTML snippets for embedding in API responses, cleaning up generated markup from CMS exports, or testing how much size reduction is possible before configuring a build step.
The beautify mode is equally useful. When you receive minified HTML from a production page, third-party widget, or competitor analysis, reformatting it into readable code makes debugging and learning from the structure far easier. Having both modes in a single tool eliminates the need to switch between separate minify and prettify utilities.
In the vast majority of cases, no. The minifier preserves all meaningful whitespace, especially inside pre, code, and textarea elements. However, if your CSS relies on whitespace between inline-block elements for spacing, removing that whitespace may shift layout slightly. Test after minification.
Yes, optionally. You can enable inline CSS minification to compress style blocks and inline JS minification to compress script tags within the same HTML file. These options are toggleable so you can choose exactly what to optimize.
Typical reductions range from 10% to 30% depending on how much whitespace, comments, and redundant attributes your HTML contains. Template-generated HTML with heavy indentation often sees the largest gains. The tool shows exact byte savings after each minification.
Yes. Email templates often contain verbose formatting for compatibility with various email clients. Minifying them reduces payload size, which helps avoid clipping in Gmail (which truncates emails over 102 KB). Be careful with conditional comments if you target Outlook, and test thoroughly.
No. All minification and beautification happens entirely in your browser. Your HTML source code never leaves your device, making it safe to process proprietary templates and markup containing sensitive content.
Minify your external CSS stylesheets alongside your HTML for complete front-end optimization.
Compress your JavaScript files to complement HTML minification and maximize page load speed.
Format and validate JSON data embedded in HTML data attributes or inline script blocks.
Analyze the text content of your HTML pages with word counts, reading time, and content statistics.