Image size is a vital factor into usability of your brand

We can safely say that the one thing social media will assuredly do in 2020 is only get more powerful. As such, it’s important to keep up with the sizing information for social media images to keep all of your profiles looking fresh. Make A Website Hub has the official rundown in their annual Social Media Image Sizes Cheat Sheet.
Twitter:
• Profile Photo: 400 x 400 pixels / Displays at 200 x 200 pixels (a maximum 100 KB file size)
• Header Photo: 1500 x 500 pixels (a maximum 10 MB file size)
• In-stream Photo: 440 x 220 pixels (a maximum 5 MB file size for photos and 3 MB file size for animated gifs)

Facebook:
• Cover Photo: 820 x 310 pixels (a preferred maximum file size of 100 KB)
• Profile Picture: 180 x 180 pixels
• Shared Image: 1200 x 630 pixels
• Shared Link: 1200 x 627
• Event Image: 1920 x 1080 px (Shows in feed: 470 × 174 pixels)
• Highlighted Image: 1200 x 717 pixels (appears on profile at 843 x 504 pixels)

Google+:
• Profile Image: 250 x 250 pixels
• Cover Picture: 1080 x 608 pixels
• Shared Image: 497 x 373 pixels

Instagram:
• Profile Picture: 110 x 110 pixels
• Photo Size: 1080 x 1080 pixels
• Video to Stories: 750 x 1334 pixels
• Photo Thumbnails: 161 x 161 pixels

Pinterest:
• Profile Picture: 165 x 165 pixels
• Board Display Image: 222 x 150 pixels
• Pin Sizes: a width of 238 pixels (with scaled height)

Tumblr:
• Profile Image: 128 x 128 pixels
• Image Posts: 500 x 750 pixels

YouTube:
• Channel Cover Picture: 2560 x 1440 pixels (for desktop), 1855 x 423 pixels (for tablets), 1546 x 423 pixels (for smartphones), and 2560 x 1440 pixels (for TV)
• Video Uploads: 1280 x 760 pixels

LinkedIn:
• Personal Page
o Personal Background image: 1584 x 396px
o Standard Logo: 400 x 400 pixels
o Profile image: 400 x 400 pixels
• Company/Brand Page
o Background image: 1536 x 768px
o Standard Logo: 400 x 400px
o Business / Career Cover Picture: 974 x 330 pixels
o Square Logo: 60 x 60px
o Business Banner Image: 646 x 220 pixels
o Standard Logo: 400 x 400px

Ello:
• Banner image: 2560 x 1440 pixels
• Profile image:360 x 360 pixels

WeChat:
• Profile Photo: 200 x 200 pixels
• Article Preview Header: 900 x 500 pixels
• Article Preview Thumbnail Image: 400 x 400 pixels (Displays at 200 x 200 pixels)
• Article Inline Image: 400 px x Any size px

Weibo:
• Cover Image: 920 x 300 px
• Profile Pictures: 200 x 200px (Displays at 100 x 100 px)
• Banner: 560 x 260 px
• Instream: 120 x 120 px
• Contest Preview: 640 x 640 px

Snapchat:
• Geofilter: 1080 x 1920