On this page
- What is the best YouTube thumbnail size?
- Where is the safe zone on a YouTube thumbnail?
- What sizes does YouTube actually display thumbnails at?
- What are the best export settings for a YouTube thumbnail?
- What size should a YouTube Shorts thumbnail be?
- Why can't I upload a custom thumbnail?
- Does the right size make a thumbnail good?
- FAQ
Quick answer
The recommended YouTube thumbnail size is 1280 × 720 pixels (16:9 aspect ratio), with a minimum width of 640 pixels. Upload a JPG, PNG, GIF, or BMP and keep the file under 2 MB so it works on every upload path. Keep faces and text away from the bottom-right corner, where YouTube places the duration badge.
Key takeaways
- Export at 1280 × 720 px, 16:9. Larger 16:9 sizes are fine if the file stays small.
- Keep the file under 2 MB: a JPG at 85-90% quality is usually a few hundred KB.
- Leave the bottom-right corner clear; the duration badge covers it in every feed.
- Non-16:9 images get letterboxed with black bars instead of filling the frame.
- Shorts are 9:16 and usually use a frame from the video, so plan that frame.
What is the best YouTube thumbnail size?
Design and export at 1280 × 720 pixels. That is the size YouTube recommends for custom thumbnails, and it matches the 16:9 shape of the video player, the home feed, search results, and the suggested sidebar. Anything with that ratio and at least 640 pixels wide will upload, but 640 × 360 looks soft on large screens, so treat 1280 × 720 as your baseline.
YouTube has been rolling out support for larger, higher-resolution thumbnails (up to 4K, 3840 × 2160) with a bigger file limit on desktop uploads. That helps on TVs, but the 2 MB limit still applies on some upload paths, including mobile. The safe move is to export 1280 × 720 (or a larger 16:9 size) and keep the file under 2 MB, so the same file works everywhere.
| Spec | Value | Notes |
|---|---|---|
| Recommended dimensions | 1280 × 720 px | Larger 16:9 sizes (1920 × 1080, 3840 × 2160) also work where supported |
| Aspect ratio | 16:9 | Other ratios get black bars (letterboxing or pillarboxing) |
| Minimum width | 640 px | 640 × 360 is the smallest 16:9 size worth uploading |
| File size | Under 2 MB | Long-standing limit; still enforced on some upload paths |
| File formats | JPG, PNG, GIF, BMP | GIFs show as a static image, not an animation |
| Shorts | 9:16 vertical | Cover is usually picked from a frame of the Short |
Where is the safe zone on a YouTube thumbnail?
YouTube doesn't crop standard thumbnails, but it does cover parts of them. The video duration badge sits in the bottom-right corner on almost every surface. Returning viewers also see a red progress bar along the bottom edge showing how much they've watched, and some surfaces play a muted preview when someone hovers or pauses on the card.
As a rule of thumb, keep faces, key text, and the main object inside the central area of the frame, with roughly 5-10% of breathing room from each edge. Treat the bottom-right corner (about the last fifth of the width and the bottom fifth of the height) as a no-go zone for anything the viewer must see.
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- Resolution
- 1280 × 720
- Aspect ratio
- 16:9
- Min width
- ≥ 640 px
- Safe file size
- < 2 MB
- Bottom-right: duration badge. Never put a face, a number, or the last word of your text here.
- Bottom edge: watch-progress bar for returning viewers. Avoid thin details right on the edge.
- Outer edges: rounded corners and tight cards in some layouts. Leave a small margin.
- Center: the safest place for the subject and the one idea the thumbnail sells.
What sizes does YouTube actually display thumbnails at?
Your 1280 × 720 file is almost never shown at 1280 × 720. YouTube scales it down to fit each surface, and the smallest placements are where thumbnails win or lose. A design that looks great full screen in Photoshop can turn into mush at sidebar size.
| Surface | Approximate display size | What to check |
|---|---|---|
| TV and large desktop home | Large, close to full resolution | Sharpness and compression artifacts |
| Desktop home and search grid | Around 360 px wide | Is the subject obvious? Can you read the text? |
| Desktop Up next / suggested sidebar | Around 168 × 94 px | Does the shape still read when text is unreadable? |
| Mobile home and search | Full screen width, but physically small | Contrast and face size on a phone held at arm's length |
| Shorts feed | Vertical 9:16 frame | A strong, centered vertical moment |
What are the best export settings for a YouTube thumbnail?
The goal is a sharp image under 2 MB. Format choice matters more than most creators expect, because a full-color PNG at 1280 × 720 often lands above 2 MB, while a JPG of the same image is usually a few hundred KB.
JPG vs PNG
JPG is the default for most thumbnails. Photos, faces, gradients, and AI-generated scenes compress well, and a quality setting of about 85-90% keeps text edges clean while staying far under the limit.
PNG is lossless, which helps flat graphics and very fine text, but files get large fast. Use it only if the file still comes in under 2 MB; otherwise export a high-quality JPG instead.
Staying under 2 MB
If the file is too big, drop JPG quality in small steps (90 → 85 → 80) and check the text edges after each step. Don't shrink below 1280 × 720 just to save bytes; lowering quality slightly costs less than losing resolution.
- Export at exactly 1280 × 720 unless you are deliberately uploading a larger 16:9 file
- Strip unnecessary metadata if your editor offers it
- Avoid heavy film grain or noise, which inflates file size and turns to mush when compressed
Color and sharpness
Export in sRGB. Wide-gamut profiles like Display P3 or Adobe RGB can look dull or shifted once YouTube converts the image. A light sharpening pass after resizing helps faces and text survive downscaling, but stop before you see halos around edges.
Remember that YouTube re-compresses every thumbnail. Fine textures, thin outlines, and small text degrade first, which is one reason bold, simple designs hold up better.
What size should a YouTube Shorts thumbnail be?
Shorts are vertical, 9:16 (1080 × 1920 is the usual video size). In the Shorts feed the cover is generally a frame selected from the Short itself, and options for uploading a separate custom Shorts thumbnail have been limited and have changed over time. Check YouTube Studio for what your account currently offers.
In practice, plan the cover inside the edit. Hold a clear, well-lit frame for a moment, with the subject centered and any on-screen text in the middle third, away from the top and bottom where the Shorts interface overlays the title, channel name, and buttons. Where a Short appears in a horizontal surface, YouTube may show a cropped version, so a centered subject is the safest choice.
Why can't I upload a custom thumbnail?
If the upload fails or the option isn't there, the cause is almost always one of the issues below. Run through them in order before assuming it's a YouTube bug.
The "Upload file" option is missing or grayed out
Custom thumbnails require a verified account. In YouTube Studio, go to Settings → Channel → Feature eligibility and complete phone verification to get access to intermediate features. Until then you can only pick one of the auto-generated frames. Our step-by-step guide to changing a YouTube thumbnail covers the rest of the process on desktop and mobile.
The file is too big
An error during upload usually means the file is over the size limit for that upload path. Re-export as a JPG at 85-90% quality; it will typically drop to a few hundred KB with no visible difference.
The thumbnail has black bars
That is letterboxing (bars on top and bottom) or pillarboxing (bars on the sides), and it means the image isn't 16:9. A 4:3 screenshot, a square social graphic, or a 1280 × 800 export all trigger it. Fix the canvas to 1280 × 720 and re-export rather than stretching the image.
It looks blurry or soft after upload
Usually the source was smaller than 1280 × 720 and got upscaled, or it was saved at low JPG quality and then compressed again by YouTube. Re-export from the original design file at full size.
Does the right size make a thumbnail good?
No. Correct dimensions only guarantee the image arrives intact. Whether anyone clicks depends on composition: one clear subject, a face or object large enough to read at 168 px wide, two to four words at most, and strong contrast against the busy feed around it.
Once the specs are right, the next things to work on are your text (see our breakdown of the best fonts for YouTube thumbnails) and the common design errors covered in YouTube thumbnail mistakes that cost clicks.
Frequently asked questions
What is the correct size for a YouTube thumbnail?
1280 × 720 pixels in a 16:9 aspect ratio, with a minimum width of 640 pixels. Keep the file under 2 MB and use JPG, PNG, GIF, or BMP.
Can a YouTube thumbnail be 1920 × 1080?
Yes. 1920 × 1080 is 16:9, so it displays correctly. Just make sure the file stays under 2 MB, which usually means exporting as a JPG rather than a PNG.
Should I use PNG or JPG for YouTube thumbnails?
JPG is the safer default because a 1280 × 720 JPG at 85-90% quality is usually a few hundred KB. PNG is fine for flat graphics if the file stays under 2 MB, but full-color PNGs often exceed it.
Why does my YouTube thumbnail have black bars?
The image isn't 16:9, so YouTube adds bars to fill the frame. Resize the canvas to 1280 × 720 and re-export instead of stretching the image.
What size is a YouTube Shorts thumbnail?
Shorts are vertical 9:16, typically 1080 × 1920. The cover is usually selected from a frame of the Short, so plan a clear, centered frame during editing and check YouTube Studio for current custom cover options.
Why can't I add a custom thumbnail on YouTube?
Your account probably isn't verified. Complete phone verification under Feature eligibility in YouTube Studio settings to enable custom thumbnails.