Choose a clear topic for the video
Use a high-resolution image size of 1280 x 720 pixels
Keep the design simple and easy to understand
Use a strong, eye-catching background
Add large, readable text
Use bold fonts with high contrast
Include a clear focal point
Use bright colors that stand out
Show emotions on faces if people are included
Use consistent branding or style
Avoid clutter and too many elements
Make sure the thumbnail matches the video content
Test different thumbnail versions if possible
Save the thumbnail in JPG, PNG, or GIF format
Keep the file size under 2 MB
Upload the thumbnail through YouTube Studio