# Free auto captions for TikTok, Reels and Shorts, no watermark

> Nuzky is a free video editor that writes your captions from what you say. AI runs on your computer, so your video is never uploaded and there is no limit on how many videos you caption.

Status: early, so expect rough edges. Current version: 0.1.9-alpha. Download it at https://nuzky.app/#download for a Mac with Apple silicon and macOS 15 or newer, a 64-bit Intel or AMD PC with Linux and glibc 2.39 or newer or Windows 10 or 11 on a 64-bit Intel or AMD PC. Intel Macs, and Windows or Linux on ARM, aren't supported. License: GPL-3.0-or-later.

## How it works

1. Open your video. Drop in a video from your phone or camera. iPhone and Android videos open the right way up, selfies included.
2. Pick the language. Nuzky captions Czech, Slovak, English, German, Polish, Spanish, French, Italian and Ukrainian. Pick yours or let Nuzky detect it, then pick Fast, Balanced or Most accurate.
3. Generate the captions. Choose 1, 2 or 3 words per caption, or whole phrases. Captions appear on their own track, timed to every word.
4. Fix and style them. Double-click a misheard word and type it. Pick one of 19 styles or your own, colour key words and light up the spoken word.
5. Export for Reels, TikTok or Shorts. Export a vertical 1080 × 1920 video with no watermark, or widescreen up to 4K for YouTube.

## Good to know

- Free, with no limit on videos or minutes
- Speech is recognised on your computer, so nothing is uploaded
- The model downloads once, then captions work offline
- On vertical videos, captions stay clear of the buttons and text TikTok and Instagram put over the video
- Cut words out later and the captions follow the cut
- A word you corrected stays corrected when you generate the captions again

## Questions

### Are the auto captions really free?

Yes. There's no subscription, no credits and no watermark, and no limit on how many videos you caption. Nuzky is free and open source.

### Which languages can it caption?

Czech, Slovak, English, German, Polish, Spanish, French, Italian and Ukrainian. Or choose Detect automatically and Nuzky works out the language itself.

### Is my video uploaded to make the captions?

No. AI on your computer listens to the video and writes the captions. Only the model is downloaded, once.

### What if it gets a word wrong?

Double-click the word in the transcript, or select it and press F2, and type what you said. The captions change with it, and the word stays corrected when you generate them again.

### Will the captions hide behind TikTok's buttons?

No. On a vertical video, captions keep to the area Instagram Reels and TikTok leave free, and longer captions wrap instead of running under the buttons.

## Links

- [Nuzky home page](https://nuzky.app)
- [Remove ums, pauses and retakes from a video automatically](https://nuzky.app/remove-filler-words.md)
- [AI video editor that works with ChatGPT and Claude](https://nuzky.app/ai-video-editor.md)
- [Nuzky vs CapCut](https://nuzky.app/capcut-alternative.md)
- [Source code on GitHub](https://github.com/nuzkyapp/nuzky)