Blurry is o-u-t.
Here’s a handy pin-up guide for 2019 that covers the ideal sizes and how to get there if you’re working with less-than-perfect images.
Portrait, landscape, or square? Are you into changing it up with 9-grid feeds? Borders? (This is great for sharing.) Get the image guide here.
Also, six simple steps to fix the photo and video quality if compression is giving you blurry images…it’s likely to be settings on your smartphone or app that need adjusting. Read more here.