Timeline-aware edits
Click the moment, fix the line, and check it in context without losing your place.
Private by default · no account needed
Make every word impossible to miss.
Turn video into beautifully timed, editable captions—right in your browser. Download the subtitle file or a finished video, with no signup and no footage sent to us.
MP4 · WebM · MOV/On-device AI/SRT + video exports
A CALMER CAPTIONING FLOW
From raw clip to final caption in one private workspace.
01
Drop video
Nothing leaves your device.
02
Tune words
Edit the transcript as you watch.
03
Export
Keep the SRT, the video, or both.
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BUILT FOR THE FINAL 10%
Tools that protect the point.
Captioning shouldn’t trade speed for control—or privacy for convenience.
Designed to be noticed
Move captions, control their scale, and start with a high-contrast style that earns attention.
Portable by default
Take an SRT to your editing suite or burn captions directly into a share-ready MP4.
YOUR FOOTAGE STAYS YOURS
The editor runs where your files already are.
Models and rendering run in your browser. Your video is not uploaded to an application server, and there’s no account to create or project library to maintain.
The first transcription may download a small public model and captioned video export needs a capable modern browser. That’s the honest trade-off for a free, local-first tool.
QUESTIONS, ANSWERED
Frequently asked questions about AI subtitles.
Everything you need to know before turning a video into editable, share-ready captions.
How does the AI subtitle generator work?
Choose a video, generate a transcript in your browser, then edit the captions against the timeline. When you are ready, download an SRT file or burn the captions into an MP4.
Is this AI subtitle generator free to use?
Yes. The editor is a no-signup, browser-based tool. Transcription and caption rendering run locally in your browser instead of through a paid application service.
Do I need to create an account?
No. You can open the studio, choose a video, generate subtitles, edit them, and export the result without creating an account.
Are my videos uploaded to a server?
No. Your video and caption project stay in your browser. The first use may download a public speech-recognition model, but the video itself is not uploaded to an application server.
Can I change subtitle font size, position, and style?
Yes. Choose bold, clean, or karaoke styling, set the caption position, adjust its size, and turn the caption background on or off before exporting.
Can I download subtitles as an SRT file or a captioned video?
Yes. Download an SRT subtitle file for another editor, or export an MP4 with captions permanently burned into the video.