Tools / Create / Thumbnail Maker
Create Runs in browser
Thumbnail Maker.
Capture and export polished thumbnails.
Processed locally — no upload. Thumbnail Maker runs entirely in your browser. Large files use more memory and processing time depends on your device. Re-encoded video is exported as WebM here (MP4 requires cross-origin isolation, e.g. a production deploy in Chrome/Firefox).
Drop your video here
or click to browse — MP4, WebM, MOV, MKV, M4V
Files stay on your device · nothing is uploaded
Settings
Load a video to configure thumbnail maker.
→ Related
? Thumbnail Maker FAQ
No. The file is processed locally with the File and Canvas APIs. There is no server upload.
In this browser, re-encoded video is WebM; MP4 needs cross-origin isolation (a production deploy in Chrome/Firefox). Images are PNG and audio is WAV or MP3.
The default engine captures frames in real time for accuracy. The FFmpeg engine is faster where available.