Animated word-by-word captions for TikTok, Reels and Shorts. The AI runs inside your browser, so your video never leaves your device. Free, unlimited, and never watermarked.
This browser can preview captions but cannot export MP4 video. For MP4 export use Chrome or Edge on a computer. Subtitle file export works everywhere.
Live preview, rendered on this page by the same engine that burns your video.
Your file opens directly in the page. There is no server to upload to, which you can verify in your browser's network tab. The only download is the AI model itself, once.
OpenAI's open-source Whisper model runs inside your browser on your own hardware. It times every single word, which is what makes the word-by-word animation possible.
Pick a style, fix any word with a click, and your browser encodes a new MP4 with the captions burned in. Hardware accelerated, usually under a minute.
Caption tools charge £15 to £20 every month and watermark their free tiers because they pay for GPU servers. Burncaps has no per-video server cost, so the free tier is actually free. That is the whole trick, and it is yours to keep.
Word-by-word highlight animation, the format proven to hold attention on short-form video. Five styles free, five more in Pro. Every thumbnail below is rendered live by the engine.
| What matters | Burncaps | Typical caption app |
|---|---|---|
| Price | Free. Pro is £29 once | £15 to £20 per month |
| Watermark on free tier | Never | Usually |
| Your video on their servers | No. It stays on your device | Yes |
| Account required | No | Yes |
| Free tier limits | None | Minutes-per-month caps |
Yes. Transcription, editing, five styles and MP4 export are free, unlimited and never watermarked. The AI runs on your device, so serving you costs us nearly nothing. That is why the free tier can be real.
No. The model downloads into your browser; your video never leaves it. Open your browser's network tab while transcribing and you will see the model download once, and no uploads.
Chrome or Edge on a computer, because they include hardware video encoding. On other browsers you can still transcribe and export SRT, VTT or ASS files.
Whisper supports about 100 languages, with auto-detect. Accuracy is best in English. The Pro max-accuracy model is noticeably better in other languages.
The model (about 80 MB) downloads once and is cached by your browser. After that, transcription starts instantly.
Burncaps is built by Jordan Labs Ltd, a UK company (no. 17358646). No ads, no analytics, no tracking. The Pro licence is the entire business model.
Premium animated styles, the max-accuracy Whisper model, and every future Pro feature. One payment, yours forever. No subscription.
Payment by card via Stripe. 14-day refund if it does not work on your machine.