YouTube Thumbnail Size
1280 × 720 pixels, 16:9, under 2 MB — plus what those numbers mean for Shorts, podcasts, and blurry-thumbnail fixes.
Standard thumbnail size (16:9)
1280 × 720 px
Minimum width 640 px, maximum file size 2 MB. JPG, PNG, or non-animated GIF. This is the size YouTube itself recommends for custom thumbnails.
| Placement | Size (px) | Ratio | Notes |
|---|---|---|---|
| Standard video | 1280 × 720 | 16:9 | The recommended upload size |
| Minimum accepted | 640 × 360 | 16:9 | Will look soft on TVs — avoid |
| Shorts cover | 1080 × 1920 | 9:16 | Picked from video frames on mobile |
| Podcast thumbnail | 1280 × 1280 | 1:1 | Square, for YouTube Podcasts surfaces |
| Max file size | 2 MB | — | JPG, PNG, non-animated GIF |
Designing for every display size
The same thumbnail renders at ~100 px wide in suggested-video sidebars and 500+ px on TV home screens. That range dictates the design rules: one clear subject filling most of the frame, text at 3-5 words maximum in a heavy typeface, and strong figure/background contrast. If you can't read the thumbnail at phone-width, neither can viewers scrolling the home feed.
Technical checklist before uploading
- Exactly 16:9 — other ratios get cropped or letterboxed in feeds.
- 1280 × 720 or larger source, exported at JPG quality 85-90.
- Under 2 MB (typical exports are 100-300 KB).
- Test at small size: zoom your export out to 10% and check readability.
- Avoid bottom-right corner text — the video duration badge covers it.
Frequently asked questions
What is the correct YouTube thumbnail size?+
1280 × 720 pixels at a 16:9 aspect ratio, with a minimum width of 640 px and a maximum file size of 2 MB. JPG, PNG, and non-animated GIF are accepted (plus WebP via the API).
Why 1280 × 720 when thumbnails display small?+
YouTube shows thumbnails at many sizes — tiny in suggested sidebars, huge on TV home screens. A 1280 × 720 source stays sharp at every size, and YouTube's compression treats higher-resolution sources better. Never upload the small display size.
What size are YouTube Shorts thumbnails?+
Shorts use a vertical 9:16 frame (1080 × 1920). On mobile you pick a frame from the video as the cover; the thumbnail you upload mainly matters where Shorts appear in regular browse surfaces, which crop to 16:9 or 1:1 — keep the subject centered.
Why is my thumbnail blurry?+
Usually one of: source under 1280 px wide, over-compressed JPG (export at quality 85-90), or fine text that YouTube's compression smears. Use large text, high contrast, and export PNG if the image has flat colors or text.
What file size should I aim for?+
The limit is 2 MB. A 1280 × 720 JPG at quality ~85 typically lands between 100-300 KB, well within the limit while staying sharp.
Does thumbnail size affect click-through rate?+
Wrong sizes hurt: non-16:9 images get letterboxed or cropped, which looks amateur in browse feeds. Beyond correctness, CTR comes from design — one clear subject, 3-5 word text, high contrast, and faces with visible emotion.
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