Every YouTube channel depends on three core image assets, and each one has a specific size YouTube expects. Upload an image at the wrong dimensions and YouTube will crop it, stretch it, or reject it outright. This guide lists the exact dimensions for every YouTube image the video thumbnail, the channel banner (channel art), and the channel profile picture (avatar) along with safe zones, maximum file sizes, and accepted formats.
The Three YouTube Image Assets
A YouTube channel's visual identity is built from three image types. Each appears in a different place and has its own resolution, aspect ratio, and file size limit:
- Video thumbnail the clickable preview image for each video. 3840×2160 pixels, 16:9 aspect ratio.
- Channel banner the wide header image across the top of a channel page. 2560×1440 pixels, 16:9 aspect ratio.
- Profile picture the circular channel avatar shown next to every video and comment. 800×800 pixels, square.
Getting all three right is the difference between a channel that looks polished and one that looks broken on half its viewers' screens. The sections below cover each asset in detail, with the exact specification YouTube publishes for creators.
YouTube Thumbnail Size
The video thumbnail is the most important image on your channel it is the single biggest factor in whether someone clicks your video. YouTube recommends uploading thumbnails at 3840×2160 pixels in a 16:9 aspect ratio. The minimum acceptable width is 640 pixels, and the video file size limit is 50 MB on desktop or 2 MB on mobile.
YouTube recommends JPG or PNG for thumbnail uploads. JPG is the most common choice because it produces the smallest file while keeping high visual quality. When a thumbnail is displayed, YouTube serves it at several smaller resolutions for example a 480×360 grid thumbnail or a 320×180 mobile preview separate from the recommended 3840×2160 upload size.
You can pull the thumbnail from any existing video with the HD thumbnail downloader, resize an image to exact thumbnail dimensions with the YouTube Thumbnail Resizer, or design one from scratch in the YouTube Thumbnail Maker. For a deeper breakdown, read the YouTube thumbnail size guide and the explanation of why 16:9 is the standard aspect ratio.
YouTube Channel Banner (Channel Art) Size
The channel banner also called channel art is the wide image across the top of every channel page. YouTube recommends uploading it at 2560×1440 pixels with a maximum file size of 6 MB.
The catch with channel art is that different devices show different crops of the same image. Only a TV displays the full 2560×1440 banner. On desktop, viewers see a roughly 2560×423 horizontal strip; on mobile, even less. Because of this, YouTube defines a safe area of 1546×423 pixels, centered in the image any logo, channel name, or text must sit inside that safe area to stay visible on every device.
To download any channel's existing banner at full resolution, use the YouTube Channel Art Downloader. To resize your own artwork to 2560×1440, the resizer tool includes a channel art preset. For the full safe-zone and per-device crop breakdown, see the YouTube channel art size guide, or follow how to download YouTube channel art step by step.
YouTube Profile Picture (Avatar) Size
The profile picture is the channel avatar that appears next to every video in search, the subscription feed, comments, and on the channel page itself. YouTube recommends uploading it at 800×800 pixels with a maximum file size of 4 MB. Accepted formats are JPG, GIF, BMP, and PNG animated GIFs are not supported.
YouTube stores the avatar as a square image but always displays it inside a circular crop. Keep your logo or face centered and away from the corners, or it will be clipped by the circle mask. To grab any channel's avatar at full resolution, use the YouTube Profile Picture Downloader. For recommended dimensions and circle-safe design rules, see the YouTube profile picture size guide, or follow how to download a YouTube profile picture.
YouTube Shorts Thumbnail Size
YouTube recommends 2160×3840 pixels at 9:16 for Shorts thumbnails, with a minimum height of 640 pixels. Use JPG or PNG and keep desktop uploads under 50 MB. Custom Shorts thumbnails can be uploaded through YouTube Studio on a computer. Podcast playlists use 1:1 thumbnails, with file limits of 50 MB on desktop and 10 MB on mobile. For vertical videos with 16:9 custom thumbnails, YouTube uses an auto-generated 4:5 thumbnail on home, explore, and subscription pages. Your custom thumbnail still appears on the watch feed, watch history, and non-mobile platforms.
You can extract the thumbnail from any Shorts video with the YouTube Shorts Thumbnail Downloader, and read the full YouTube Shorts thumbnail size breakdown for more detail.
Quick Reference: All YouTube Image Sizes
| Image Asset | Recommended Size | Aspect Ratio | Max File Size | Safe Area |
|---|---|---|---|---|
| Video thumbnail | 3840×2160 px | 16:9 | 50 MB desktop; 2 MB mobile | Display varies by surface |
| Channel banner (channel art) | 2560×1440 px | 16:9 | 6 MB | 1546×423 px centered |
| Profile picture (avatar) | 800×800 px | 1:1 (square) | 4 MB | Centered circle |
| Shorts thumbnail | 2160×3840 px | 9:16 | 50 MB desktop | Display varies by surface |
How to Resize Images to YouTube Specs
If an image is the wrong size, you do not need design software to fix it. The YouTube Thumbnail Resizer resizes any image to 3840×2160, 2560×1440, or 2160×3840 directly in your browser. If a thumbnail is over the 2 MB mobile video limit, the YouTube Thumbnail Compressor reduces the file size while keeping it under that mobile upload cap. You can confirm a thumbnail meets the 16:9 video recommendation with the Aspect Ratio Checker. All of these plus ten more are listed on the free YouTube thumbnail tools page.
Frequently Asked Questions
YouTube recommends 3840×2160 pixels at 16:9 for video thumbnails, with a minimum width of 640 pixels. Use JPG or PNG. Desktop uploads must remain under 50 MB for video, Shorts, and podcast thumbnails. On mobile, video thumbnails must remain under 2 MB and podcast thumbnails under 10 MB. For Shorts, use 2160×3840 at 9:16 with a minimum height of 640 pixels. Podcast playlists use 1:1.
YouTube channel art should be 2560×1440 pixels with a maximum file size of 6 MB. Keep all important text and logos within the central 1546×423 pixel safe area so they remain visible on phones, tablets, desktops, and TVs.
A YouTube profile picture should be 800×800 pixels, with a maximum file size of 4 MB. YouTube displays it inside a circle, so keep the key content centered and away from the edges.
YouTube re-encodes thumbnails, serves them at multiple resolutions, and applies its own compression. A thumbnail upload is served at smaller sizes, scaled down to fit each surface. If your thumbnail looks washed out after upload, see why YouTube compresses thumbnails and how to prevent it.