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Specs last changed: · Verified against sources

YouTube rewards instant clarity. YouTube now recommends thumbnails at 3840×2160 (16:9)—1280×720 still works but is no longer the official target. Keep faces and words bold. Banners are responsive—put essentials in the center safe area. Shorts are 9:16; leave space for UI. Export crisp JPG/PNG and MP4 (H.264/AAC).

Best Practices

  • Thumbnails: export at 3840×2160 (16:9); 640px wide is the hard minimum.
  • Center the focal point for TV and mobile viewing.
  • Use channel banner safe area for taglines/logos.
  • Shorts: 9:16; protect bottom area from UI overlays.
  • Export MP4 (H.264/AAC); crisp JPEG/PNG for thumbs.

Pro Tips

  • Design at 100%, test at ~10% zoom to simulate small sizes.
  • Limit thumbnail text to 2–4 words.
  • A/B test variants to improve CTR.
  • Use consistent layouts/colors for brand recognition.
  • Avoid busy backgrounds behind faces/headlines.

Sizes

Tap a size to see its safe zones.

Thumbnail (Recommended)

3840×2160 · 16:9 · Image (2 MB mobile / 50 MB desktop)

3840 x 2160 px

Preview shows relative aspect only. Export at the listed resolution for best quality.

Thumbnail (Common Export)

1280×720 · 16:9 · Image

1280 x 720 px

Preview shows relative aspect only. Export at the listed resolution for best quality.

Channel Banner

2560×1440 · 16:9 · Image (max 6 MB)

508px
509px
507px
507px
2560 x 1440 px
Safe/overlay areas (from spec)

Preview shows relative aspect only. Export at the listed resolution for best quality.

Shorts

1080×1920 · 9:16 · Video

220px
220px
100px
0
1080 x 1920 px
Safe/overlay areas (from spec)

Preview shows relative aspect only. Export at the listed resolution for best quality.

Shorts Thumbnail

2160×3840 · 9:16 · Image

≈ 461px
≈ 461px
≈ 194px
2160 x 3840 px
UI overlay (top/bottom, approx.)
Right controls rail (approx.)

Preview shows relative aspect only. Export at the listed resolution for best quality.

FAQ

What size should YouTube thumbnails be?
YouTube now recommends 3840×2160 px at 16:9, with a minimum width of 640 px. The long-quoted 1280×720 still uploads fine and is what most creators export, but it's no longer the official recommendation. Use JPG, PNG, or GIF.
How do I avoid YouTube banner cropping?
The banner is 2560×1440, but only the center 1546×423 safe area appears on every device. Keep logos, taglines, and faces inside that box.
What’s the ideal YouTube Shorts format?
Vertical 9:16 at 1080×1920. Leave ~220px at top and bottom clear so the title, handle, captions, and action buttons don't cover your subject.
What bitrate should I upload at?
For 1080p, YouTube recommends 8 Mbps for SDR video and 10 Mbps for 4K; use H.264 video with AAC audio in an MP4 container.
Can I change a YouTube thumbnail after publishing?
Yes — you can swap thumbnails at any time from YouTube Studio. Many creators A/B test variants to improve click-through.
What's the maximum file size for a YouTube thumbnail?
It depends where you upload from: 2 MB on mobile and 50 MB on desktop (10 MB and 50 MB respectively for podcasts). Keep exports lean regardless — a 16:9 JPG rarely needs to exceed 1 MB for crisp quality.