YouTube thumbnail size & maker
Resize any photo to the exact 1280×720 YouTube thumbnail size — crop or fit, right in your browser, no upload.
Social media image sizes
| Platform | Format | Dimensions | Ratio |
|---|---|---|---|
| YouTube | Thumbnail | 1280 × 720 px | 16:9 |
| Post | 1080 × 1080 px | 1:1 | |
| Portrait | 1080 × 1350 px | 4:5 | |
| Story / Reel | 1080 × 1920 px | 9:16 | |
| TikTok | Video | 1080 × 1920 px | 9:16 |
| Post | 1200 × 630 px | 1.90:1 | |
| Cover | 820 × 312 px | 2.63:1 | |
| X (Twitter) | Post | 1600 × 900 px | 16:9 |
| Header | 1500 × 500 px | 3:1 | |
| Post | 1200 × 627 px | 1.91:1 | |
| Banner | 1584 × 396 px | 4:1 | |
| Pin | 1000 × 1500 px | 2:3 | |
| Profile picture | Profile picture | 800 × 800 px | 1:1 |
The right YouTube thumbnail size
A YouTube thumbnail is 1280×720 pixels — a 16:9 aspect ratio, the same shape as the video player. YouTube asks for a minimum width of 640 pixels and a file under 2 MB, but 1280×720 is the size to aim for because it stays sharp everywhere the thumbnail appears, from a phone feed to a living-room TV. Anything smaller looks soft; anything the wrong shape gets cropped or letterboxed.
Getting the size right matters more than it sounds. The thumbnail is shown at wildly different scales across YouTube, so an image built at the correct 1280×720 keeps its framing and never appears with black bars or an awkward crop.
Designing a thumbnail that earns clicks
The thumbnail is the single biggest lever on whether a video gets watched. Use one clear focal point, not a busy collage: a large expressive face, a bold object or a short punchy phrase in big, high-contrast letters that stay readable at thumbnail size. Three or four words is plenty — anything longer disappears when the image shrinks in the feed.
Keep the important part away from the bottom-right corner, where YouTube overlays the video duration, and give text a solid or outlined background so it holds up against any frame behind it. A consistent look across a channel — same font, same colour accent — also helps viewers recognise your videos at a glance.
Resize any image to a thumbnail, locally
Drop in a photo, screenshot or exported design and imagenimble fits it to an exact 1280×720 right in your browser — nothing is uploaded. Choose crop to fill the frame edge to edge, or fit to keep the whole image with a background colour of your choice. The result downloads instantly and privately, and you can process several images in one go.
Because it runs on your device there is no account, no watermark and no size limit beyond your browser’s memory. Switch off your connection after the page loads and it still works — the picture never leaves your computer.
Covers and sizes for every platform
The same image often needs to appear in more than one place. From the same upload you can switch the preset to size a cover or post for Instagram, TikTok, Facebook, X, LinkedIn or Pinterest, or a round profile picture — and download every size at once as a single ZIP. It is the quick way to keep a launch looking consistent across every channel without opening a design app.
Privacy by design
All processing happens inside your browser. Your files never reach a server — there is nothing to store, transmit or share.
Learn more in our privacy policyFrequently asked questions
Exactly 1280×720 pixels (16:9). YouTube recommends a minimum width of 640 pixels and a maximum file size of 2 MB, in JPG, PNG, WebP or GIF.
16:9 — the same shape as the video player. Any image you load here is cropped or fitted into that exact ratio so it never appears stretched or letterboxed on YouTube.
YouTube accepts custom thumbnails up to 2 MB. Exporting as JPG keeps the file well under that limit; the tool shows the exact output size before you download.
No. The image is resized entirely in your browser — nothing is sent to a server. You can disconnect from the internet after the page loads and it still works.
Yes — switch the preset to Instagram, TikTok, Facebook, X, LinkedIn, Pinterest or a profile picture, or download every size at once as a ZIP.
JPG is the practical choice: YouTube caps the thumbnail at 2 MB and a JPG stays well under that at full quality. Use PNG only if your design has flat graphics or text that must stay perfectly crisp.