YouTube Image Size Guide (2025)

Using the correct dimensions is crucial for YouTube. If your thumbnail is too small, it will look blurry. If the file size is over 2MB, YouTube will reject the upload.

1. Thumbnail Size (Videos):

Ideal Dimension: 1280 x 720 pixels.
Minimum Width: 640 pixels.
Aspect Ratio: 16:9.
Max File Size: 2 MB.

2. Channel Art (Banner):

TV Display: 2560 x 1440 pixels.
Desktop Safe Area: 2560 x 423 pixels.
Mobile Safe Area: 1546 x 423 pixels.
Max File Size: 6 MB.