01
Drop a video
MP4, MOV, WebM or MKV. The video stays in your browser; the audio is extracted locally.
Auto subtitles
Auto subtitles for any video
Generate timed subtitles from speech, fix the words that matter, and export a captioned MP4 or free SRT/VTT/TXT file — all in the browser.
No signup to startFree SRT / VTTVideo stays in your browser
Drop a video to caption
MP4, MOV, WebM, or MKV. Drop a clip — get captions you can style and export.
Answer first
What are auto subtitles?
Auto subtitles are timed captions generated automatically from the speech in a video. AutoCaptions extracts the audio in your browser, sends it for transcription, and returns editable subtitle lines. You can keep them as a separate SRT/VTT file or burn them into the video.
- Word-level timing for editing and karaoke styles.
- SRT, VTT and TXT downloads free on every plan.
- Burned-in MP4 export for platforms that ignore sidecar files.
Subtitle files vs burned-in captions
| Need | Use |
|---|---|
| YouTube upload | SRT/VTT sidecar file |
| TikTok / Reels / Shorts | Burned-in captions |
| Course or LMS | SRT/VTT + reviewed text |
| Silent autoplay | Burned-in captions |
Three steps from speech to subtitles
02
Review the subtitles
Fix names and jargon, merge or split lines, and nudge the timing on the timeline.
03
Export
Download SRT/VTT/TXT for free, or export an MP4 with captions baked in.
Free subtitle files, paid clean video
SRT, VTT and TXT downloads are free on every plan. The free video export is watermarked, capped at 720p and limited to 10-minute videos. Pro removes the watermark and raises the video limit to 30 minutes; Max goes to 60 minutes and adds multi-speaker captions, Auto Clips and the keyword highlighter.
Auto subtitle questions
What are auto subtitles?
Auto subtitles are timed captions generated from a video’s speech by a speech-to-text model. They can be burned into the video or downloaded as SRT/VTT files.
Are auto subtitles free?
Yes to start. The editor and SRT/VTT/TXT downloads are free. Free video exports include a watermark and are capped at 720p and 10 minutes.
Can I download SRT and VTT?
Yes — SRT, VTT and TXT downloads are free on every plan, including the free plan.
How accurate are automatic subtitles?
Clean single-speaker audio is usually close; accents, crosstalk, noise and jargon need a review pass. Always check names and technical terms before publishing.