How to make a thumbnail from a video frame
Step through your video to find a sharp, expressive frame, export it at HD or Original resolution, and crop it to the platform's shape: 16:9 for YouTube (1280 × 720 is YouTube's recommended size), 9:16 for Reels, Shorts and Stories covers, and 4:5 or 1:1 for feed posts. Then add text in your favourite editor.
Thumbnail sizes and ratios
| Where | Aspect ratio | Typical size |
|---|---|---|
| YouTube video thumbnail | 16:9 | 1280 × 720 (YouTube's recommendation) |
| Reels, Shorts, TikTok, Stories covers | 9:16 | 1080 × 1920 |
| Instagram portrait feed post | 4:5 | 1080 × 1350 |
| Square post / profile-style image | 1:1 | 1080 × 1080 |
Platforms update their specifications from time to time, so check the current guidance in each platform's help centre before publishing.
How to choose a great thumbnail frame
- Faces with clear expressions tend to draw attention. Step frame by frame through a reaction to find the peak.
- Sharpness first. Avoid frames with motion blur; a still moment reads far better at small sizes.
- Leave room for text. Pick frames with some empty space where a title can go.
- Think small. Thumbnails are viewed tiny on phones; simple compositions work best.
Step by step with Frame Capture
- Open the video and scrub to the scene you want.
- Switch to Frame stepping and move one frame at a time to the best expression.
- Tap save and choose HD or Original resolution.
- Choose a crop preset: 16:9 for YouTube, 9:16 for vertical covers, 4:5 or 1:1 for feed posts.
- Save as JPG at high quality (or PNG if you'll edit heavily), then add text and graphics in your design app.
Common mistakes
- Using a screenshot of the video player, which is often lower resolution and includes controls.
- Cropping a landscape 720p frame to 9:16, which leaves a narrow, low-resolution image. Use the highest resolution available when cropping heavily.
- Picking a frame mid-blink or mid-movement.
Crop presets and HD/Original export are Premium features in Frame Capture; HD/Original can also be unlocked for a single save by watching a short ad.
Related: save a burst of frames to choose from.
Try Frame Capture
Step frame by frame through any video and save the exact moment as JPG or PNG, up to original resolution. Free on Android.
Frequently asked questions
What size should a YouTube thumbnail be?
YouTube recommends 1280 × 720 pixels (16:9). Check YouTube Help for the current file size and format limits.
Can I use a frame from my video as the YouTube thumbnail?
Yes. YouTube offers auto-generated frames, but exporting your own frame lets you choose the exact moment and add text before uploading it as a custom thumbnail.
What ratio is an Instagram Reels cover?
Reels are vertical 9:16. Keep important content toward the centre, because the cover can be shown cropped in the profile grid.