CODE FORMATTERS
Free HTML Minifier online
Minify HTML by removing whitespace.
HTML Minifier is a free browser tool that lets you minify HTML by removing whitespace. Drop your file into HTML Minifier, choose your settings, and save the finished file. HTML Minifier works on your device only, so no file or text is ever uploaded.
- Free to use
- No signup
- No uploads
- Works offline
Why use HTML Minifier
- minify HTML by removing whitespace without installing software
- Your file is processed on your device by HTML Minifier, never uploaded
- HTML Minifier needs no account, email address or payment details
- HTML Minifier is batch-friendly: reuse it immediately on the next file
- HTML Minifier is keyboard accessible and screen-reader friendly
- HTML Minifier is free forever, with no watermark on the result
HTML Minifier runs entirely inside your browser. Your file is never uploaded, stored or shared, and nothing is retained once you close the tab.
How to use HTML Minifier
- Add your file Drag your file onto the drop zone or pick it from your device.
- Adjust the options Set the options that control how HTML Minifier handles your input.
- Run the tool HTML Minifier works instantly on your device, with no queue and no upload wait.
- Download the result Save the finished file straight to your device, then reuse the tool as often as you like.
Benefits
Private by design
Your file stays on your device while HTML Minifier works. HTML Minifier never sends it to a server, so confidential work stays confidential.
Instant results
HTML Minifier finishes most jobs in under a second because the work happens on your own hardware.
No signup, no limits
Use HTML Minifier as many times as you want. HTML Minifier asks for no account, adds no watermark and keeps no paid tier gating the output.
Works offline
Once the page has loaded, HTML Minifier keeps working without a connection, which helps on flights and locked-down networks.
Who it is for
For developers
Developers use HTML Minifier to debug and ship faster without installing software: minify HTML by removing whitespace on a shared or locked-down machine.
For freelancers
HTML Minifier helps freelancers send client deliverables quickly, since your file never leaves the laptop it was created on.
For support teams
HTML Minifier helps support teams answer customer requests quickly, since your file never leaves the laptop it was created on.
How it works
HTML Minifier loads your file into memory, applies the change you requested to the underlying data rather than to a screenshot of it, and writes a fresh copy for download. Your original stays untouched on disk, and every step of HTML Minifier happens inside your browser sandbox.
Frequently asked questions
Is HTML Minifier free to use?
Yes. HTML Minifier is completely free with no account, no trial and no usage cap. Every feature on this page is available on the first visit.
Does HTML Minifier upload your file to a server?
No. HTML Minifier processes your file inside your browser, so it never reaches a DocTools server. That also means the tool keeps working if your connection drops mid-task.
Is there a file size limit?
The practical ceiling is your device's available memory rather than a server quota. Files up to roughly 100 MB work comfortably on a typical laptop in HTML Minifier.
Do I need to install anything to use HTML Minifier?
No installation is needed. HTML Minifier runs in Chrome, Edge, Firefox and Safari, on desktop and on mobile, with no extension or plugin.
Can I use HTML Minifier on a phone or tablet?
Yes. The HTML Minifier interface adapts to small screens and supports touch input, though very large jobs are faster on a desktop browser.
What happens to your file when I close the tab?
It is discarded. HTML Minifier keeps everything in temporary browser memory, so closing the tab removes every trace of the session.
Related tools
- CSS Minifier | Minify CSS by removing whitespace
- JavaScript Minifier | Minify JavaScript code
- JSON Minifier | Minify JSON by removing whitespace
Last updated: 2026-09-07