A lot of you have asked us about Social Media Image Sizes. Below you will find some QUICK TIPS for your reference
Take a few minutes and optimize your profile photo and your cover photo on each channel. This means ensuring that photos fall within the dimensions recommended for each network—often all it takes is a quick crop.
Many people think that a square is a square, or the social networks will make sure the image fits right. In reality, you never know when profile images will be reused elsewhere on a social network. How will it look when expanded? How does it look when it’s small in people’s streams? How does it look on mobile compared to desktop?
The social networks provide us with optimal image sizes knowing that these photos will be used in a variety of instances. You should probably trust them. The following information comes from our post, Social Media Image Sizes: A Quick Reference Guide for Each Network.
Standard image sizes for major social networks are as follows:
Facebook profile picture: 170 X 170 pixels
Facebook cover photo: 820 X 312 pixels
Twitter profile photo: 400 X 400 pixels
Twitter header image: 1,500 X 500 pixels
Google+ profile picture: 250 X 250 pixels (minimum)
Google+ cover photo: 1080 X 608 pixels
LinkedIn profile photo: 400 X 400 pixels (minimum)
LinkedIn custom background: 1584 X 396
LinkedIn cover photo: 974 X 330 pixels
LinkedIn banner image: 646 X 220 pixels
Instagram profile picture: 110 X 110 pixels
Pinterest profile picture: 150 X 150 pixels
YouTube profile picture: 800 X 800 pixels
YouTube cover photo: 2,560 X 1,440 pixels on desktop
Once you’ve optimized for size, you can optimize the picture itself—using a survey to judge how competent, likable and influential you’re perceived to be.