YouTube Thumbnail Size: Dimensions, Ratio and Upload Limits
YouTube's recommended thumbnail size for videos is 3840 x 2160 pixels, with a minimum width of 640 pixels and a recommended 16:9 aspect ratio. Use an image format such as JPG or PNG, and keep video thumbnails under the upload limit: 2 MB on mobile or 50 MB on desktop.
Checked October 2026. Sources are listed at the end of the page.
A thumbnail has both pixel dimensions and a file size. Check them separately: a wide image can still be too large to upload, while a small file can have the wrong shape. This guide uses YouTube's official thumbnail guidance recorded in our platform specs, rather than treating a design template as a platform requirement. Start with the video specification below, then check the exported file before uploading it.
| Setting | Official guidance | How to use it |
|---|---|---|
| Recommended video resolution | 3840 x 2160 pixels | Use this as the target canvas for a new video thumbnail. |
| Minimum video width | 640 pixels | Check the width of the exported image, not just the working document. |
| Recommended video aspect ratio | 16:9 | Keep the thumbnail landscape and review the composition after resizing. |
| Image formats | Such as JPG or PNG | Export an image file. These are examples from YouTube, not an exhaustive format list. |
| Mobile video thumbnail upload limit | 2 MB | Use a file below this limit if uploading from mobile. |
| Desktop thumbnail upload limit | 50 MB for video, Shorts and podcast thumbnails | Do not apply the desktop allowance to a mobile upload. |
| Mobile podcast thumbnail upload limit | 10 MB | This is a podcast allowance, not the mobile video thumbnail limit. |
| Shorts resolution guidance | 2160 x 3840 pixels | Keep Shorts artwork separate from the landscape video thumbnail specification. |
YouTube Thumbnail Size: Dimensions, Ratio and Upload Limits
Choose the asset and upload route
Decide whether you are preparing a regular video thumbnail or artwork for another format. Also decide whether you will upload from mobile or desktop. The video dimensions and the upload file limit answer different questions, so write down both before working on the design.
Set the canvas in pixels
For a new video thumbnail, use the recommended 3840 x 2160 pixel canvas and 16:9 shape. If you already have artwork, check its dimensions before changing it. Work from your original image rather than a preview when possible, and avoid assuming that a preset name proves the exported dimensions are correct.
Review the composition
Keep the subject and any headline easy to identify. Preview the design at a smaller display size and ask whether the main idea still reads clearly. If changing the shape removes an important part of the picture, revise the layout instead of accepting the first result. These are design checks, not additional YouTube size rules.
Export and inspect the file
Use an image format such as JPG or PNG, then inspect the exported width, height and file size. For a mobile video upload, keep it below 2 MB; the desktop limit is 50 MB. Reopen the exported file to check the text and subject rather than judging only the editable design.
Use the matching free tool or create new artwork
If your image is ready and only needs sizing, use the linked YouTube Thumbnail Resizer. Its catalog lists a 16:9 output up to 3840 x 2160 pixels, at least 640 pixels wide, as JPG or PNG within 2 MB. If you need a new picture instead, Infinall AI can create an image from a prompt on a Studio canvas. Check the finished export against the same YouTube table.
YouTube thumbnail size in Photoshop
If you are preparing a thumbnail in Photoshop or another image editor, use the same platform dimensions: 3840 x 2160 pixels for a video thumbnail. The application you choose does not change YouTube's recommendation. Keep an editable original and inspect the image you actually export.
This guide is not a Photoshop menu walkthrough. Use your editor's own controls to set the document dimensions, then compare the final file with the table. A designer working on an existing composition may prefer to stay in that editor rather than generate new artwork. Infinall AI is useful when the missing piece is the picture itself, not simply a change of dimensions.
YouTube thumbnail size in inches
The cited YouTube guidance specifies pixels, not an inch measurement. For this upload task, use the pixel dimensions in the table rather than an unsourced print-size conversion. If your editor asks you to choose a measurement unit, use pixels for the thumbnail canvas.
There is no official inch value in the source record used for this page, so we do not present one as a YouTube requirement. Keep any separate print workflow outside the thumbnail upload checklist.
Choosing a YouTube thumbnail size converter
Choose a sizing tool when you already have the right picture. The matching free resizer is linked below, with its supported output described in the steps. After using any converter, verify the exported dimensions and file size yourself. Do not assume that changing the format also fixes the shape, or that matching the shape proves the file meets the upload limit.
If you need new artwork, Infinall AI accepts a picture description and places the generated result on a Studio project canvas. Free and Pro accounts can both make images, although some options are Pro-only. Image creation uses credits. Generating an image and preparing a compliant thumbnail are separate tasks: always check the final export.
Mobile and desktop limits are not interchangeable
YouTube's recorded guidance distinguishes the upload routes. A video thumbnail uploaded on mobile has a 2 MB limit, while the desktop allowance is 50 MB for video, Shorts and podcast thumbnails. Mobile podcast thumbnails have their own 10 MB limit.
For a regular video thumbnail that you may upload from either device, preparing a file below the mobile video limit is a practical choice. That is workflow advice, not a claim that YouTube has the same limit everywhere. Keep the asset type and upload route attached to your checklist so a podcast allowance does not get mistaken for a video rule.
Frequently asked questions
What is the recommended YouTube thumbnail size?
The official source record recommends 3840 x 2160 pixels for video thumbnails, with a minimum video width of 640 pixels. It recommends a 16:9 aspect ratio for videos.
Does every YouTube thumbnail have a 2 MB limit?
No. The cited guidance lists 2 MB for mobile video thumbnail uploads, 10 MB for mobile podcast thumbnails, and 50 MB for video, Shorts and podcast thumbnails uploaded on desktop. Check the upload route and asset type together.
Should I export a JPG or PNG thumbnail?
YouTube names JPG and PNG as examples of image formats. Either is a sourced option for this checklist. Inspect your export for readability, dimensions and file size rather than choosing solely by the extension.
Do Shorts use the same recommended dimensions as video thumbnails?
The resolution quote distinguishes them: 3840 x 2160 pixels for videos and 2160 x 3840 pixels for Shorts. The landscape video recommendation should not be treated as the Shorts resolution guidance.
Sources and checks
Every price, rating and number on this page comes from the source pages below, checked October 2026. Prices and plans change often, so confirm on the vendor's own page before you buy.
- YouTube Help: thumbnail dimensions, formats and upload limits, checked October 2026
- Infinall AI: create an image from a prompt, checked October 2026
- Infinall AI: platforms, file types and sizes, checked October 2026
- Infinall free tool catalog: YouTube Thumbnail Resizer, checked October 2026