...
Please take note of each thumbnail's safe zone, marked in pale pink on the images in the Safe zones column below. The safe zone is the part of a thumbnail that remains unobscured and visible even on the smallest widgets. When designing thumbnails, ensure that any essential imagery and text sits correctly within the safe zone so that it won't get cut off.
...
Thumbnail type | Recommended dimensions for use | Safe zones (Click to enlarge images) |
Content(including uploaded files, questions, articles and links) | 1071x366 pixels | |
170x115 pixels | ||
1880x340 pixels | ||
484x181 pixels | ||
1960x480 pixels |
...