Auto subtitle generator
Generate subtitles for any video automatically. AI-powered transcription runs entirely in your browser. Download as SRT or burn into your video.
First time setup
This tool downloads a 75–145 MB AI model to your browser. It only happens once. After that, subtitles generate offline in seconds.
Select video to generate subtitles
or click to browse — MP4, MOV, AVI, WEBM, MKV
Frequently Asked Questions
Is my video uploaded to a server?
No. Everything runs in your browser. Your video never leaves your device.
Why does the first use take longer?
The AI model (75 MB or 145 MB depending on your choice) is downloaded to your browser cache on first use. After that it loads instantly.
How accurate are the subtitles?
Accuracy is very good for clear speech in English and major languages. For strong accents, technical terms, or noisy audio, expect some errors. Always review and edit.
What is the difference between Fast and Accurate?
Fast (Whisper tiny, 75 MB) is good for most clear recordings. Accurate (Whisper base, 145 MB) is better for accents, noisy environments, and non-English languages.
Can I generate subtitles in Amharic?
Amharic is supported experimentally. Accuracy is limited. Results may need significant editing.
How do I add subtitles to YouTube?
Download the SRT file and go to YouTube Studio. Open your video, click Subtitles, then Add, and upload the SRT file.