...
When supplying an image for the full-width hero at the top of the News page, the image MUST be at least 2400px wide. The image height can vary, but we recommend somewhere between 1300px and 1600px tall.
...
The gray-background stylized headshot should be 512px in width, height can vary.
Logos
Company logos (for employment/career sections) should be 512px in width. (Height varies because different companies have different logo dimensions.)
...