Social media changes these dimensions more often than anyone would like, so treat this as a snapshot, not gospel. If you’re doing anything important, check the platform’s own help page. Last updated: July 2026.
Instagram & Facebook
Feed posts: 1080 x 1350px (portrait works best) or 1080 x 1080px (square)
Stories & Reels: 1080 x 1920px
Facebook cover photo: 820 x 312px
Feed images: 1200 x 1200px
Link preview images: 1200 x 627px
Banner: 1584 x 396px
X (formerly Twitter)
Profile photo: 400 x 400px
Header: 1500 x 500px
Post images: square (1:1) or landscape (16:9) both work fine
Pins: 1000 x 1500px (2:3 ratio) — go much taller and Pinterest crops it
YouTube
Thumbnails: 1280 x 720px
Channel banner: upload at 2560 x 1440px, but keep logos and text inside the centre 1546 x 423px — that’s the part visible on every device
The one thing that doesn’t change
Whatever the exact pixel count, keep your most important content — faces, text, logos — away from the edges. Every platform crops differently on different devices, and the middle is the only bit guaranteed to survive.
If you’re setting up social accounts as part of a new site or business, my Tools I Use page covers what I actually use to build and run one.