Every platform has its own image size rules, and ignoring them costs you quality. Instagram crops your post. LinkedIn stretches your banner. Your email client shows a blurry header.
The fix is always the same: resize the image to the exact pixel dimensions before uploading.
Resize any image to exact dimensions: Image Resizer — Pixels, Aspect Ratio, No Upload
Standard Dimensions by Platform
Social Media
Platform Use Recommended Size
Instagram Square post 1080 × 1080px
Instagram Portrait post 1080 × 1350px
Instagram Story / Reel 1080 × 1920px
Instagram Profile photo 320 × 320px
LinkedIn Banner / cover 1584 × 396px
LinkedIn Post image 1200 × 627px
LinkedIn Profile photo 400 × 400px
Twitter / X Header 1500 × 500px
Twitter / X Post image 1200 × 675px
Facebook Cover photo 851 × 315px
Facebook Post image 1200 × 630px
YouTube Channel art 2560 × 1440px
YouTube Thumbnail 1280 × 720px
Email
Use Recommended Size
Email header banner 600px wide (height varies)
Email inline image 480–600px wide
Email…
