+ Free YouTube Tool

YouTube Thumbnail Size Checker

Upload your thumbnail and instantly preview how it renders on TV, desktop, tablet, and mobile — before you publish.

Upload your thumbnail and preview how it renders on TV, desktop, tablet, and mobile before you publish.

Recommended: 1280 × 720 px  ·  16:9  ·  Under 2MB

Check every thumbnail crop in one place.

Use the checker as a pre-publish QA pass for YouTube thumbnails, campaign images, and creator visuals.

  • Validate 1280 x 720 exports and 16:9 ratio instantly.
  • Preview the same image across TV, desktop, tablet, and mobile cards.
  • Toggle safe-zone overlays to keep text and faces readable.

Try it with your thumbnail

Recommended export: 1280 x 720 px, 16:9 ratio, JPG, PNG, or WebP.

Drop your thumbnail here

JPG, PNG or WebP  ·  Max 10MB

Choose file
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Full-size preview

Your thumbnail 1280 × 720 px
Safe zone guide
All-device safe zone — keep key content here
Text safe zone — avoid extreme edges
Timestamp danger zone — YouTube overlays here
At-risk edges — may be clipped on some devices

Preview across devices

TV 480 × 270 px
Full detail — text and faces read clearly at this size.
Desktop 320 × 180 px
Standard feed view — the most common context.
Tablet 246 × 138 px
Mid-size screen — high contrast wins here.
Mobile 168 × 94 px
Hardest test — survive this, survive all platforms.
📐 Quick design checks
Keep key text in the centre 80% of the image — edges get clipped on some devices.
Avoid placing anything critical in the bottom-left corner — YouTube overlays the timestamp there.
Use high contrast between text and background — small screens kill subtlety fast.
Recommended size is 1280 × 720 px at 72 dpi. Always export at full resolution.
Faces and expressions read better than logos at small sizes — emotion drives clicks.
Limit yourself to 3–4 words max of visible text — anything more disappears on mobile.