Faster pages
Trim a landing page or email template before it goes live.
HTML Minifier and Beautifier
Smaller HTML for faster pages, or tidy HTML for reading. Processed on your device.
Your files stay with you. Your files never leave your browser. This tool runs on your device: nothing is uploaded to our servers, so there is nothing for us to store or see.
How to use it
- Paste your HTML or open a file.
- Choose Minify or Beautify.
- Copy or download the result.
Where it helps
Reading markup
Re-indent a one-line page source to find a broken tag.
Email templates
Keep HTML emails under size limits that clip long messages.
Good to know
Stays in your browser
Your text is processed on your device and never sent to our servers.
Test after minifying
Open the page once and check it still looks and works right.
Inline spacing
Collapsing spaces between inline tags can change spacing in rare cases.
Questions people ask
How do you minify HTML, or beautify it so it's readable?
Paste your HTML or open a file, choose Minify or Beautify, then copy or download the result. Minify removes comments, line breaks and extra spaces between tags and inside style and script blocks, while leaving pre and textarea text alone. Beautify re-indents with 2 spaces, 4 spaces or tabs so the structure is easy to follow.
- Minify Or beautify. One switch.
- Safe No renaming. Quotes and order kept.
- pre Textarea untouched. Whitespace kept there.
- 2, 4, tab Beautify indent. Your choice.
What does the minifier remove?
Comments, except old Internet Explorer conditional comments, plus line breaks and extra spaces between tags and inside style and script blocks. Text inside pre and textarea elements is left exactly as it is, because spacing there is meaningful. The tool shows when the HTML is already compact.
Is it safe for my page?
It's deliberately cautious. It never removes attribute quotes, reorders tags or renames anything, which is where aggressive minifiers cause bugs. Collapsing whitespace between inline elements can change spacing in rare cases, so open the minified page once and check it before you publish it. A quick check takes a minute.
Will beautifying change how the page looks?
It adds line breaks and indentation, which browsers normally ignore. Between inline elements such as links and bold text, a new line can show as a small space, so use the beautified version for reading and editing rather than publishing it directly without a check.
Is my code uploaded?
No. Your HTML is processed in your browser and never sent to our servers, and nothing is stored when you close the page. That makes it safe for unreleased pages, client templates and internal dashboards that you shouldn't paste into an unknown website. Close the tab when you're done and nothing remains.
How much smaller will my HTML get?
It depends on how much whitespace and how many comments the file has. Hand-written, well-indented pages often shrink by 10 to 25 percent. Gzip or Brotli compression on your server shrinks the transfer further, and the two work well together rather than replacing each other.
Does minifying HTML improve SEO?
Only indirectly. Smaller pages load a little faster, and speed is one of many signals search engines use. Content, structure and links matter far more. Minify as part of a routine build, but don't expect rankings to jump from this step alone. Clear headings and useful content come first.
Why does Gmail clip my HTML email?
Gmail clips messages larger than about 102 KB and hides the rest behind a 'View entire message' link. Minifying the HTML can bring a long template back under that size. Removing unused styles and large inline images helps even more for newsletters. Test by sending the email to yourself first.
Does it minify the CSS and JavaScript inside the page?
It removes extra spaces and line breaks inside style and script blocks. For deeper savings on large stylesheets or scripts, run them through the CSS and JavaScript minifiers separately, or keep them in their own files where the browser can cache them. Then paste the smaller versions back in.
Can I beautify a page I copied from view source?
Yes. Paste the source and choose Beautify. One-line, machine-generated HTML becomes indented and readable, which makes it easier to find a form, a meta tag or a broken element. Pages built by JavaScript may show little in view source, though. Use your browser's inspect tool to see the rendered HTML instead.
Which indentation should I use when beautifying?
Two spaces suits deeply nested HTML and is common in web projects. Four spaces or tabs suit teams that prefer more visible structure. Choose whatever your project's other files use, so that pasting the result in doesn't create messy, mixed indentation. The tool offers 2 spaces, 4 spaces or tabs.
Does it fix invalid HTML?
No. It changes whitespace and comments, not structure. Missing closing tags or wrongly nested elements stay as they are. Beautifying often makes such mistakes easier to spot, because the indentation goes wrong right where the problem starts in the file. Then use an HTML validator to check the rest of the page.
Can I open an HTML file from my computer?
Yes. Use the file button to load a .html file, which is read locally and never uploaded. When you're done, download the result as page.html or copy it to the clipboard to paste into your editor, website builder or email platform. The original file is never changed.
Should I minify HTML by hand or in a build step?
For a site you update often, a build step that minifies automatically is better, so you always edit the readable source. This tool is ideal for one-off jobs: a landing page, an email template or a snippet you're pasting into a website builder. Keep the readable copy as your master.
Does it work on a phone?
Yes. Paste HTML or open a file on your phone and copy the result. Reading long markup is easier on a bigger screen, but the tool runs entirely in your mobile browser, with no app needed and nothing sent to a server at any point in the process.
Is the HTML minifier free?
Yes. It's free with no sign-up and no limit on use. It's one of the free developer tools from Marketiism, with the CSS and JavaScript minifiers. Marketiism builds software that includes a website and landing page builder for small businesses. Use it as often as you need.
Want this inside your own account?
Marketiism keeps your invoice numbers, GST reports, UPI payment links and WhatsApp reminders in one place. Leave your details and we'll call to set it up for your business, or start the trial yourself.
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