YouTube thumbnail size
1280 × 720px
Aspect ratio
16:9
YouTube thumbnails are 1280 × 720 px (16:9), under 2 MB — the highest-leverage 921,600 pixels on the platform.
Last verified June 2026
The thumbnail spec is fixed and simple: 1280 × 720 px at 16:9, at least 640 px wide, under 2 MB, as JPG, PNG, or non-animated GIF. The craft is anything but simple. The thumbnail is the deciding vote in whether a video gets clicked — YouTube’s own creator guidance treats it, together with the title, as the main driver of click-through rate — and it is mostly judged at tiny sizes: home-feed tiles, suggested-video rails, and search results on phones. Designing at full size and reviewing at thumbnail size is the entire discipline.
| Variant | Dimensions | Ratio |
|---|---|---|
| Thumbnail (recommended) | 1280 × 720 px | 16:9 |
| Minimum width | 640 px | 16:9 |
| File size limit | 2 MB maxJPG, PNG, or non-animated GIF; the 2 MB cap applies to video thumbnails (podcast thumbnails allow more). | — |
| Common rendering | ~168–360 px wideFeed tiles, suggested rail, and mobile search — design for these. | 16:9 |
YouTube stamps the video duration in the bottom-right corner of every thumbnail, and progress bars overlay the bottom edge for returning viewers — keep that corner and the bottom strip free of text. Hover previews and certain layouts can also crowd the top-right. The dependable composition: subject and headline text inside the central 80%, nothing critical in the bottom-right sixth. Then shrink the draft to 168 px wide; if any element stops reading, it was decoration, not content.
High-performing thumbnails are almost always one strong subject — an expressive face or a single clear object — shot or cut out against a high-contrast background. Detail does not survive 168 px. If you use text, three to five words maximum, in heavy type, saying something the title does not already say; duplicating the title wastes the platform’s most valuable pixels.
Your thumbnail is never seen alone — it sits in a grid next to the other results for the same search and the suggested rail of similar videos. Before finalizing, search your target keyword and screenshot the results: if your draft uses the same colors and composition as the incumbents, it disappears. Contrarian color choices (the only warm thumbnail in a wall of blue) are a legitimate strategy.
Consistent framing, palette, and type across your channel lets returning viewers spot your videos instantly in the feed — that recognition compounds. Pair the system with measurement: YouTube Studio reports CTR per video, and swapping the thumbnail on an underperforming video is one of the few retroactive levers you have. Change one variable at a time so you learn what moved the number.
1280 × 720 px at 16:9, with a minimum width of 640 px and a 2 MB file-size cap for video thumbnails, as JPG, PNG, or non-animated GIF.
Custom thumbnails are a gated feature — your account needs to be verified (phone) and in good standing. Once enabled, the option appears in YouTube Studio’s upload flow and video details page.
One clear subject, strong contrast, and at most a few words of large text that add to (not repeat) the title. Judge every draft at ~168 px wide — that is how most viewers meet it in feeds and suggested rails.
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