What image sizes does YouTube use?
YouTube thumbnail 16:9 1280×720 (up to 2 MB).
YouTube recommends 3840x2160 thumbnails, at least 640 px wide, 16:9, JPG or PNG. Mobile uploads are capped at 2 MB (50 MB on desktop). 1280x720 is the long-standing size and small enough for every route.
1280×720 px · ≤ 2 MB
Official: 3840x2160 recommended, 640 px minimum width, 16:9, JPG/PNG. 2 MB from mobile, 50 MB from desktop. 1280x720 is the long-standing common size.
Last verified 2026-09-29 · official figure · source
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Fitted photos appear here at exactly 1280×720 px.
| Use | Size (px) | Max file | Notes |
|---|---|---|---|
| YouTube thumbnail 16:9 | 1280 × 720 | 2 MB | Official: 3840x2160 recommended, 640 px minimum width, 16:9, JPG/PNG. 2 MB from mobile, 50 MB from desktop. 1280x720 is the long-standing common size.Official figure · Source |
Numbers last verified: 2026-09-29. Platforms change rules often; check the platform help page before an important upload.
YouTube thumbnail 16:9 1280×720 (up to 2 MB).
The file-size ceilings used here are 2 MB, depending on the size in the table. Set the maximum file size and the tool lowers JPG/WebP quality only as much as needed, without changing the pixel size. PNG cannot be compressed by quality.
Read from the platform's own help pages: YouTube thumbnail 16:9. Sources: support.google.com. Last checked 2026-09-29. Sizes can change, so check your seller account before a big campaign.
No. Fitting runs in your browser. Your originals are untouched, results are new files without EXIF or location data, and up to 10 images at a time are free.