YouTube thumbnail size guide (2026 specs).
Your video thumbnail is the primary visual hook deciding CTR and audience engagement. To look crisp across 4K displays, mobile devices, and feed previews, artwork must comply with YouTube's exact technical specs.
Official YouTube Specifications.
| Parameter | Value |
|---|---|
| Ideal Dimensions | 1280 × 720 pixels (minimum 640px width) |
| Aspect Ratio | 16:9 widescreen |
| Maximum File Size | 2 MB for standard videos (10MB for podcasts) |
| Supported Formats | JPG, PNG, GIF (non-animated), WEBP |
| Color Space | sRGB / 8-bit |
Why 1280 × 720 is the recommended size.
When thumbnails appear on small phone screens, YouTube scales the master asset down. However, when videos are embedded or shown on Smart TVs, YouTube renders the 1280x720 master file. Uploading lower resolution graphics results in visible pixelation and lower click-through rates.
File format comparison: JPG vs PNG.
JPG is the standard choice for YouTube thumbnails with photographic subjects, gradients, and realistic lighting. PNG is ideal for graphics featuring flat illustrations and high-contrast typography, provided the export size remains under the 2 MB limit.
Mobile timestamp safe zones.
The bottom-right corner of your thumbnail will always be covered by YouTube's video duration badge (e.g., '14:22'). Avoid placing key faces, critical logos, or punchline text in the bottom right corner.
Download any video's original 1280×720 master thumbnail
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