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 signature logo…