Free YouTube thumbnail tools that run in your browser
Download any YouTube thumbnail in full HD, test your own thumbnail in realistic YouTube mockups, crop and compress to 1280x720, or capture a frame from a video. Every tool works entirely on your device: your files and links never leave the browser.
Three more tools for your own thumbnails
Thumbnail PreviewerSee your thumbnail in the home feed, search results, sidebar and mobile app, in light and dark mode. Compare up to four versions side by side.
Resize and CompressCrop any image to 16:9, export at exactly 1280x720 as JPEG, WebP or PNG, and stay under YouTube's 2 MB limit. Includes a safe-zone overlay.
Frame GrabberLoad a video file, step through it frame by frame and save any moment as a 1280x720 thumbnail. MP4 and WebM, no upload.
Why these tools run in your browser
Most thumbnail sites send your link or file to a server. These tools do not. The downloader fetches images straight from YouTube's image servers into your browser, and the previewer, resizer and frame grabber process your files locally with standard web APIs. Nothing is stored, and there is nothing to sign up for.
YouTube thumbnail specs at a glance
- 1280 x 720
- Recommended resolution
- 16:9
- Aspect ratio
- 2 MB
- Maximum file size
- JPG, PNG, GIF
- Accepted formats
- 640 px
- Minimum width