How to Add a Custom Thumbnail to YouTube Shorts

Is your Short showing a random frame as its cover? A custom thumbnail means using a cover image that you made yourself. In this guide, you will first choose a cover, then upload it from YouTube Studio on a computer.

Cover illustration made with AI — not a screenshot of the app or an actual video frame.

Checked on 4 October 2026: YouTube’s current help guide says custom images for Shorts are uploaded in Studio on desktop. Your account must be verified. The steps from the official thumbnail guide are given below in simple language. First check whether the option shows in your account.

Keep these three things ready first

Access to your channel on a computer, the Short whose cover you want to change, and a JPG or PNG cover image. Choose a vertical 9:16 design: this means the image is taller than it is wide, like a phone video.

For practice, take one clear frame from your Short. If it is a video about making chai, choose the cup or the moment the chai is poured. Using an attractive photo from some other topic just to get clicks will give the viewer the wrong expectation.

1. Keep one clear subject in the cover

Choose one main subject: the cup, a face or the final result. You do not need to fill it with many tiny photos and long sentences. Even on a small screen, it should be clear what the Short is about.

If you use text, keep it short. For a chai tutorial, “Masala Chai” may be enough. Do not write a claim like “The world’s best chai with this secret trick” when the video does not prove it.

2. Keep important things away from the edges

Keep the subject and any useful text in the middle area. Do not assume the thumbnail will be cropped the same way everywhere. Look at the design at a small size: if you have to zoom in to read the text, make it bigger or use fewer words.

One simple suggested layout: the cup in the centre, a small title at the top, and little clutter in the background. This is a design suggestion, not a required YouTube template.

3. Upload the image from YouTube Studio

1. Open YouTube Studio on a computer.
2. Go to Content and select Shorts.
3. Open your Short and go to the edit/details screen.
4. In the Thumbnail section, use Upload file to choose your cover image.
5. Check the preview and click SAVE.

After you save, the cover may not update everywhere right away. According to YouTube, changes can take time to show. Check again a little later before you upload the same file again and again.

Cannot find the Upload file option?

First make sure you are using Studio on a computer. Also check that the right channel and the right Short are open. Check your account verification; here, verified does not mean you will get a blue or grey badge next to your channel name.

If you still cannot find the option, use Studio’s help to check whether it is available for your account. Do not delete an existing Short and upload it again just to get the thumbnail button. This risks losing that post’s continuity and its comments.

Image will not select?

First open the file on your computer and look at it. Is it a real JPG/PNG export, or did you only change the filename? Export the file again based on the size or format error that Studio shows. Platform limits can change, so do not depend on one fixed file-size number from an old tutorial.

Will changing the cover increase views?

A good cover can help people understand the topic of the video, but it does not guarantee views. Also work on the hook, which means the start of the video, and on the actual content. The thumbnail and the video should make the same promise.

If you want to see the effect of the cover, note the date you changed it. If you also change the title and your whole content strategy at the same time, it will be hard to know what made the difference. Do not turn one result into a rule for every future Short.

Quick final check

The image is related to the right Short. The main subject is clearly visible. The text is readable at a small size. The upload and Save are complete. You checked how it looks to the public again. The cover does not promise a result that is not in the video.

If you also want to improve the opening of your Reel or Short, get ideas from the simple opening-shot guide.

Want a different look?Build your own prompt — pick the outfit, background and lighting, then copy it in one tap.

Open Prompt Builder