What the HTML Minifier does
This is a live, two-pane minifier. Your original markup sits on the left and the minified version appears on the right the moment you type, with no button to press. Each pane shows its own size, and a summary line reads out your original size, the minified size and how much smaller the result is, so the saving is visible as you work. Under the hood it deletes HTML comments, removes the gaps between tags, and collapses long stretches of spaces into single ones. Smaller markup means fewer bytes to download, which helps pages render a touch quicker and keeps your source clean before you ship it. When you are happy, one click copies the output or downloads it as a .min.html file.
It is handy for front-end developers prepping a build by hand, anyone pasting markup into an email template or CMS field with a size cap, and people who just want to flatten messy, over-indented HTML into a single tight string.
How to use it
- Paste or type your HTML into the input pane on the left, or hit Load example to drop in a sample.
- The compressed markup appears instantly in the right pane as you type, with each pane’s size and the percent saved shown above.
- Click Copy to grab the result, or Download to save it as a
.min.htmlfile. - Use Clear to empty both panes and start over.
There are no settings to fiddle with, and nothing is uploaded. Paste, read the savings, copy or download, done.
Why minify here
It is instant: the minified version updates as you type, with no queue and no waiting on a server round trip. It is private, because everything runs locally in your browser, so internal or unreleased code never leaves your machine. And it is free with no sign-up, no watermark, and no daily limit, on desktop or phone.
One quick tip
Keep your original file. Minified HTML is awkward to edit by hand, so treat the output as a final, copy-and-deploy version rather than something you keep working in. If a page uses <pre> blocks or relies on exact spacing somewhere, glance over those parts after minifying. Working with whole folders of files instead of one snippet? The BulkPro desktop app from the same team is built for batch jobs like that.
Frequently asked questions
- What does this HTML minifier remove?
- It strips HTML comments, collapses the whitespace between tags, and squeezes runs of multiple spaces down to one. The result is the same markup with the slack taken out, ready to paste back into your project.
- Will minifying break my HTML?
- For normal markup, no. It keeps your tags and content intact. One thing to watch: if your page has a <pre>, <textarea>, or whitespace-sensitive code block, collapsing spaces can change how that text displays, so check those sections after minifying.
- Is my HTML uploaded anywhere?
- No. The minifier runs entirely in your browser with JavaScript. Your markup is never sent to a server, which makes it safe for private or internal code and means it works even offline once the page has loaded.
- Does it minify inline CSS and JavaScript too?
- It focuses on the HTML itself: comments and whitespace. It is a lightweight minifier, so for dedicated CSS or JS shrinking, use the CSS Minifier and JS Minifier tools on JotTools, which understand those languages better.
- Does it show how much smaller the file gets?
- Yes. Each pane shows its size, and the summary line reads out your original size, the minified size and the percent saved, updating live as you type.
- Can I download the minified HTML?
- Yes. Beside Copy there is a Download button that saves the result as a .min.html file, so you can drop it straight into your project.
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Last updated: June 15, 2026