PrivateYour video never leaves your browser
Automatic Caption Generator
Upload a video and get synced, styled captions automatically. No typing, no timeline fiddling.
Drop a video or audio file
MP4, MOV, WEBM, MP3, WAV · up to 10 min on Free · no signup
01
Upload
Drop a video or audio file. It never leaves your device.
02
Edit & style
Fix any word, pick a caption style, adjust size and position.
03
Export
Download SRT/VTT free, or an MP4 with captions burned in.
Better than built-in auto captions
Platform auto captions are hard to style and often get words wrong. Here you can fix any word and use your own fonts, colours and animations across every platform.
Fast enough for daily posting
A one-minute clip is transcribed in seconds, so captioning fits into your posting routine instead of slowing it down.
FAQ
Frequently asked questions
How accurate are the captions?+
Very accurate for clear speech, using the latest Whisper-class speech recognition. Every word is editable, so you can fix names, jargon or slang before you export.
Is it really free?+
Yes. You can transcribe up to 30 minutes a day, edit your captions and download SRT, VTT or TXT files for free with no watermark. Exporting a video with burned-in captions is free at 720p with a small watermark; paid plans unlock 1080p, 4K and no watermark.
Do I need an account?+
No. Upload, transcribe, edit and download subtitle files without signing up. We only ask for an email when you export a captioned video on the free plan.
Is my video uploaded to your servers?+
No. Your video is processed entirely in your browser. Only a compressed audio track is sent for transcription, and it isn't stored afterwards.