Uploading the wrong image size to a social platform results in cropping, stretching, blurring, or compression artefacts — all of which make content look less professional and perform worse algorithmically. Getting dimensions right before upload takes thirty seconds and pays dividends every time the image is viewed.
Facebook Image Sizes
Profile picture: 170×170px. Cover photo: 851×315px. Shared post images: 1200×630px. Event cover: 1920×1005px. Carousel and boosted posts: 1080×1080px square.
Instagram Image Sizes
Square post: 1080×1080px. Portrait post (best engagement): 1080×1350px. Landscape: 1080×566px. Stories and Reels: 1080×1920px (9:16). Profile picture: 110×110px displayed as circle.
LinkedIn and Twitter/X
LinkedIn profile: 400×400px. LinkedIn banner: 1584×396px. LinkedIn post images: 1200×627px. Twitter/X profile: 400×400px. Twitter/X header: 1500×500px. Tweet images: 1200×675px landscape, 1200×1200px square.
Resizing to Exact Dimensions
Use the free Image Resizer to hit exact pixel targets, then compress with the Image Compressor at quality 0.75–0.80 before uploading. This prevents the platform from applying its own aggressive compression to your images, which reduces visible quality.
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