Video to Thumbnail Converter
Drop your video, pick the best second and download a sharp thumbnail.
How to convert video to Thumbnail
- Add your video. Drag and drop an MP4, MOV, WebM, AVI, MKV or other video into the box above, or tap Choose video.
- Set the options. Adjust the capture time and format. The defaults already work well for most Thumbnail conversions.
- Convert and download. Press Convert to Thumbnail, watch the progress bar, then download your image. Click Convert another to do the next file.
What is Thumbnail and why convert video to Thumbnail?
A great thumbnail decides whether people click. This tool grabs a full-resolution frame from any second of your video and saves it as a JPG.
With this free video to Thumbnail converter you can:
- Create a YouTube or course thumbnail
- Set a poster image for a website video
- Make a preview image for social posts
Pro tip: YouTube recommends 1280 x 720; capture from a 720p or 1080p source and add text in your favourite editor.
Features of our Thumbnail converter
100% private
The video to Thumbnail conversion runs inside your browser with WebAssembly. Your file is never uploaded to a server.
No signup, no watermark
Use the Thumbnail converter as often as you like. There is no account, no email and no logo stamped on your file.
Works on any device
Convert on Windows, Mac, Linux, Android, iPhone and iPad in Chrome, Edge, Firefox or Safari.
Fine control
Change the capture time and format before converting.
All input formats
Open MP4, MOV, MKV, WebM, AVI, FLV, WMV, 3GP and most other video types.
Fast and free
No queue and no waiting for uploads, so short clips finish in seconds.
Why use our video to Thumbnail tool?
Most online converters make you upload your video, wait in a queue and then download the result from their server. That wastes time and puts private footage on someone else’s computer. Our video to Thumbnail converter does the work right in your browser, so it is faster for short clips and nothing is stored anywhere. When you close the tab, the file is gone.
Video to Thumbnail FAQ
How do I convert a video to Thumbnail?
Drop your video into the converter at the top of this page, adjust the capture time and format, press Convert to Thumbnail and download the result. It takes three steps and no account.
Is this video to Thumbnail converter free?
Yes. The converter is completely free with no signup, no watermark and no daily limit.
Is it safe? Are my videos uploaded?
No upload happens. The conversion runs locally in your browser using ffmpeg compiled to WebAssembly, so your video never leaves your device.
What is Thumbnail used for?
A great thumbnail decides whether people click. This tool grabs a full-resolution frame from any second of your video and saves it as a JPG. People commonly use it to create a YouTube or course thumbnail.
Which video formats can I convert to Thumbnail?
You can convert MP4, MOV, MKV, WebM, AVI, FLV, WMV, 3GP and most other common video files to Thumbnail.
Is there a file size limit?
Large files work, but because everything runs on your device, very big videos (over 500 MB) need more memory and time. Trim long videos first for the fastest result.
Can I convert video to Thumbnail on iPhone or Android?
Yes. The tool works in mobile Safari and Chrome. On iPhone the download goes to the Files app; on Android it goes to your Downloads folder.
Any tips for the best Thumbnail result?
YouTube recommends 1280 x 720; capture from a 720p or 1080p source and add text in your favourite editor.