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- Go to studio.youtube.com and click Content in the left sidebar to open your video library.
- Click the title or thumbnail of the video you want to update to open its details page.
- In the Thumbnail section on the right side of the details page, click Upload file.
- Select your thumbnail image file from your device. The thumbnail preview will update immediately to show how it will appear in search results and on your channel page.
- Click the X icon in the top-right corner to Save and Close[a][b]. Your thumbnail will be saved and applied automatically.
How to Add a Thumbnail to a YouTube Video
Walk through this interactive demo to learn how to add a thumbnail to a YouTube video.
📌 Why this matters
Why this matters
A custom thumbnail is one of the most direct levers you have over a video's click-through rate. YouTube's auto-generated thumbnails pull a random frame from the video, which rarely represents the content as compellingly as a purpose-designed image. For businesses using YouTube to publish product demos, tutorials, or thought leadership content, a consistent thumbnail style also builds visual brand recognition across your video library. Uploading a custom thumbnail takes under a minute and can meaningfully improve how a video performs in search and suggested results.
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