CODE FORMATTERS
Free HTML Beautifier online
Format and indent HTML code.
Use HTML Beautifier to format and indent HTML code in seconds, straight from your browser. Add your file, adjust the HTML Beautifier options if you need to, then download the result immediately. HTML Beautifier processes everything in your own browser, so your data never leaves your device.
- Free to use
- No signup
- No uploads
- Works offline
Why use HTML Beautifier
- format and indent HTML code without installing software
- Your file is processed on your device by HTML Beautifier, never uploaded
- HTML Beautifier needs no account, email address or payment details
- HTML Beautifier is batch-friendly: reuse it immediately on the next file
- HTML Beautifier is keyboard accessible and screen-reader friendly
- HTML Beautifier is free forever, with no watermark on the result
HTML Beautifier 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 Beautifier
- 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 Beautifier handles your input.
- Apply the change HTML Beautifier 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 Beautifier works. HTML Beautifier never sends it to a server, so confidential work stays confidential.
Instant results
There is no upload step, so HTML Beautifier starts the moment you add your file.
No signup, no limits
Use HTML Beautifier as many times as you want. HTML Beautifier asks for no account, adds no watermark and keeps no paid tier gating the output.
Works offline
Once the page has loaded, HTML Beautifier keeps working without a connection, which helps on flights and locked-down networks.
Who it is for
For developers
Developers use HTML Beautifier to debug and ship faster without installing software: format and indent HTML code on a shared or locked-down machine.
For freelancers
HTML Beautifier helps freelancers send client deliverables quickly, since your file never leaves the laptop it was created on.
For support teams
HTML Beautifier helps support teams answer customer requests quickly, since your file never leaves the laptop it was created on.
How it works
HTML Beautifier 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 Beautifier happens inside your browser sandbox.
Frequently asked questions
Is HTML Beautifier free to use?
Yes. HTML Beautifier 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 Beautifier upload your file to a server?
No. HTML Beautifier 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 Beautifier.
Do I need to install anything to use HTML Beautifier?
No installation is needed. HTML Beautifier runs in Chrome, Edge, Firefox and Safari, on desktop and on mobile, with no extension or plugin.
Can I use HTML Beautifier on a phone or tablet?
Yes. The HTML Beautifier 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 Beautifier keeps everything in temporary browser memory, so closing the tab removes every trace of the session.
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Last updated: 2026-09-07