Free auto subtitles, no watermark
A program on your PC, not a website: no watermark, no minute cap, no account, and even offline after the first time.
Updated: October 2026 · 6 min read
Auto subtitles that are truly free and watermark-free: a program on your PC, not a website. Install AppGrabbit, drop the video onto Subtitles with AI and click Get subtitles: the AI engine runs on your computer (even offline) and leaves .srt, .vtt and .txt timed word by word. Previewing is free; burning them into the video is Pro. In no case is there a watermark. 1 credit · burning: Pro
What “free” hides in web generators
| Typical web generator | AppGrabbit | |
|---|---|---|
| Watermark on the video | ✗ Yes, until you pay | ✓ Never |
| Minute cap | ✗ 3, 10 or 30 per video | ✓ None |
| File-size cap | ✗ 500 MB to 2 GB | ✓ None |
| Account and email to download | ✗ Almost always | ✓ No |
| Your video | ✗ Uploaded to their servers | ✓ Stays on your PC |
| Offline | ✗ Impossible | ✓ Yes, after the first time |
| What is charged | Removing the watermark and the caps | Get subtitles: 1 credit (5 free a month) · preview: free · Make the video: Pro $8.99/mo or 7-day pass $3.99 |
Offline: the proof that nothing is uploaded
The first time, the app downloads the AI engine and the model (once; it tells you the size first). From then on you can unplug the cable and subtitle: transcription with Whisper (whisper.cpp) and burning with FFmpeg run on your computer, on your NVIDIA card if you have one or on the CPU if not. There is no server to send the video to because none is needed. The only thing that needs a connection is downloading a video from a link.
What “automatic” means here
It is not running text pasted per sentence. The engine returns the timing of every word, and with that the app cuts the subtitles the way the trade does: two lines of up to 42 characters, breaks on silences and at the end of each sentence, never a lone word hanging. Measured on the final video, each subtitle shows up about 150 milliseconds before the voice, which is what subtitling guidelines recommend. And because the timing is per word, the Center style can light up the one being spoken.
How long it takes, in numbers
- Transcribing — with an NVIDIA card, about 30 seconds per 10 minutes; CPU only, about 2 minutes per 10.
- Burning — a 51-second portrait video takes about 9 seconds.
- Video size — does not change the time: only the audio is read.
- First time — the engine download: a few minutes, once.
Step by step
- 1Install once, with internet — The installer ships FFmpeg inside; the AI engine downloads the first time you use it (Fast 181 MB or Accurate 547 MB; with NVIDIA, 643 MB more). After that, everything else runs offline.
- 2Drop the video in — Download › Subtitles with AI › “Audio or video from your PC”. No account, no upload. A link works too, but then you need internet to download it.
- 3“Get subtitles” — 1 credit. Out come the .srt, the .vtt and the .txt timed word by word, in the Subtitles folder. You can unplug the internet before clicking: it works the same.
- 4Look at them before paying anything — On a real frame of your video, in the three styles, with “Previous / next moment”. Free, no watermark.
- 5“Make the video”, if you want them burned in — Pro or the 7-day pass. The MP4 comes out clean: no watermark, no logo, no minute cut.
Frequently asked questions
In three places: the watermark that only goes away when you pay, the minute cap (10, 30, sometimes 3) and the account with an email they ask for before letting you download. Here there is one fee, in plain sight: making the burned-in video is Pro; everything else is not.
That after the first time (engine and model downloaded) you can transcribe and burn with the cable unplugged. It is the most honest proof that nothing is uploaded: there is nowhere to send it.
No. A 2-hour 4K conference is subtitled the same as a Reel; it just takes longer. Websites cut by minutes because they pay for servers; your PC does not.
It comes from the Whisper engine running on your PC: about 5 to 8 words wrong in 100, mostly proper names. You see it in the preview before paying and the .srt can be fixed in Notepad.
Getting the subtitles (.srt, .vtt and .txt) costs 1 credit; Free comes with 5 a month. Previewing them on your video, in the three styles, is free. Burning them in (“Make the video”) is for Pro (USD 8.99 a month) or the 7-day pass (USD 3.99, no renewal). There is never a watermark, not even on Free.
Nothing. The video stays on your PC: the AI engine (Whisper, whisper.cpp) runs on your computer, on your NVIDIA card if you have one or on the CPU if not, and FFmpeg burns the subtitles right there.
Related guides
Auto subtitles with no watermark, on your PC
Windows 10/11 · Get subtitles: 1 credit, 5 free a month · Make the video: Pro or 7-day pass