Problem
The cover image on your blog post looks stretched, or the important part of the image has been cut off.
Possible cause
The cover image is always cropped to a 16:9 aspect ratio (widescreen). If the image is not in the right format, or the crop area was not adjusted correctly, the result may look wrong.
Solution
Edit the blog post and re-upload the cover image.
When the crop tool appears, adjust the crop frame manually to include the most important part of the image.
Confirm the crop and save the post.
For best results, use an image that is already close to 16:9 (for example 1920×1080 pixels).
If the problem persists, contact support and include details about:
The image format and resolution.
What you see in the crop tool.
When the issue occurred.