Runs on your device — nothing uploaded
Translate subtitle files
free and unlimited
Drop in an SRT or VTT file and translate it into 20+ languages. No upload, no signup, no file size limit — your subtitles never leave your computer.
Supports .srt and .vtt · Chrome & Edge desktop · Last updated September 2026
TL;DR
SubtitleTranslatorFree translates SRT and VTT subtitle files into 19 other languages for free, with no signup and no file size limit. It runs entirely in your browser using its built-in on-device translation model, so your file is never uploaded. The key limit: it needs Google Chrome 138+ or Microsoft Edge on desktop.
Why not just use an online translator?
Because they pay a cloud provider per character — and that cost shapes everything about how they treat your file.
Typical online tools
- Upload your file to their servers
- Cap file size or number of lines
- Ask you to sign up or pay to download
- Charge because they pay per character
SubtitleTranslatorFree
- File never leaves your browser
- No size limit — full movies work
- No account, no watermark, no paywall
- Free forever, because it costs us nothing
How it works
Drop your file
Choose any .srt or .vtt file. It is read locally by your browser.
Pick languages
The source language is detected automatically. Choose your target from 20+ options.
Download
Timestamps and formatting stay intact. Save the translated file instantly.
Built for people who make videos
YouTubers
Add translated subtitles to reach viewers in other countries without paying per video.
Course creators
Localise lecture captions for international students in minutes.
Fansubbers
Translate full-length episodes with no line caps or upload queues.
Documentary & indie film
Keep unreleased footage private — the file never touches a server.
Frequently asked questions
Is this subtitle translator really free? +
Yes, completely free with no limits. Translation runs on your own device using your browser's built-in translation model, so there are no per-character costs to pass on to you.
Are my subtitle files uploaded anywhere? +
No. Your file is read and translated entirely inside your browser. It is never sent to a server, which is why there is no file size limit.
What subtitle formats are supported? +
SRT (SubRip) and VTT (WebVTT) files. Timestamps, cue numbers, positioning settings and formatting tags such as <i> are preserved exactly.
Which browsers work? +
Google Chrome 138 or newer, or Microsoft Edge, on desktop — each ships its own built-in on-device translation model. Other browsers depend on them adopting the same standard and shipping a model.
Is there a file size limit? +
No. Because nothing is uploaded, you can translate feature-length films and multi-hour lectures.
Does it work offline? +
After the language model downloads the first time, translation works without an internet connection.