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Can You Change a Thumbnail After Uploading? Best Practices

Yes, you can change a YouTube thumbnail after uploading a video. Updating thumbnails can rejuvenate underperforming content and boost engagement. Here’s how to do it effectively.​


🔄 Why Update Old Thumbnails?

Refreshing thumbnails can:​

  • Increase Click-Through Rates (CTR): A more compelling thumbnail can attract more viewers.​
  • Revive Underperforming Videos: Changing the thumbnail may give older videos a new lease on life.​
  • Reflect Brand Evolution: As your branding evolves, updating thumbnails ensures consistency.​

For instance, Vevo updated thumbnails on older videos and observed significant increases in views.​


🛠️ How to Change a YouTube Thumbnail

On Desktop:

  1. Log in to YouTube Studio.​
  2. Click on “Content” in the left menu.
  3. Find the video you want to update and click the pencil icon (Details).​
  4. Under “Thumbnail,” click “Upload thumbnail” to select a new image.​
  5. Click “Save” to apply changes.​

On Mobile:

  1. Open the YouTube Studio app.​
  2. Tap on the video you wish to edit.​
  3. Tap the pencil icon, then tap the existing thumbnail.​
  4. Choose a new thumbnail from your device.​
  5. Tap “Save” to confirm.​

Ensure your thumbnail meets YouTube’s guidelines: 1280×720 pixels, under 2MB, and in JPG, PNG, or GIF format.


📊 Best Practices for Updating Thumbnails

  • Analyze Performance: Use YouTube Analytics to identify videos with low CTRs.​
  • A/B Testing: Experiment with different thumbnails to see which performs better.​
  • Consistency: Maintain a consistent style across thumbnails to strengthen brand identity.​
  • Avoid Frequent Changes: Give each new thumbnail time to gauge its effectiveness before making further changes.​

Regularly reviewing and updating thumbnails can lead to improved performance and viewer engagement.​


Changing a video’s thumbnail after upload is a simple yet effective strategy to enhance visibility and engagement. By following best practices and leveraging analytics, you can optimize your content’s appeal and reach a broader audience.