Free auto captions.
Written on your computer.
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.
For Macs with Apple silicon and macOS 15 or newer
Also for Linux and Windows. Version 0.1.9-alpha
For 64-bit Intel or AMD PCs with Windows 10 or 11
Windows warns you the first time, because the installer isn't signed yet. What to expect
Also for Mac and Linux. Version 0.1.9-alpha
For 64-bit Intel or AMD PCs
The .deb is for Ubuntu 24.04 or newer, the AppImage for other distributions with glibc 2.39 or newer.
Also for Mac and Windows. Version 0.1.9-alpha
This Mac has an Intel chip. Nuzky needs a Mac with Apple silicon, M1 or newer.This computer has an ARM chip. On Windows and Linux, Nuzky needs a 64-bit Intel or AMD PC.
Not supportedIntel Macs, and Windows or Linux on ARM
Choose your system. Nuzky doesn't run on Chromebooks. Version 0.1.9-alpha · Star on GitHub
Style
Text
Style
MORNING RUNCoverMain
You talk.
Nuzky types.
Open your video
Drop in a video from your phone or camera. iPhone and Android videos open the right way up, selfies included.
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.
Generate the captions
Choose 1, 2 or 3 words per caption, or whole phrases. Captions appear on their own track, timed to every word.
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.
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.
Short answers.
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.