ImageResizer.tech kb · px · cm

Resize an Image for Instagram, Facebook & LinkedIn

Every platform crops and compresses uploads its own way, so a photo that looks sharp on your phone can end up cropped oddly or soft after upload. Uploading at the platform's own recommended pixel size gives it the least reason to re-process your image.

Common sizes (pixels)

UseRecommended size
Instagram square post1080 × 1080
Instagram portrait post1080 × 1350
Instagram Story / Reel1080 × 1920
Facebook post (shared link/photo)1200 × 630
Facebook cover photo820 × 312
LinkedIn post image1200 × 627
LinkedIn cover banner1584 × 396
LinkedIn profile picture400 × 400
X (Twitter) post image1600 × 900
YouTube thumbnail1280 × 720

Platforms tweak these numbers occasionally. If a specific upload still looks off after resizing, check the platform's current help page — but these values are the stable, long-standing standard for each.

Step by step

  1. Open the resizer and switch to Pixels mode.
  2. Type the width from the table above. Uncheck aspect-ratio lock if you also need the exact height (the photo is centre-cropped to fit).
  3. Most platforms don't enforce a KB cap, but if you want to keep uploads fast on mobile data, add an optional max size of 500KB–1MB.
  4. Drop your photo and download.

Why exact pixels beat "just upload the original"

Uploading a 12-megapixel original and letting the platform resize it usually works fine — but the platform's own compressor is tuned for speed, not your specific photo. Resizing yourself first, especially for text-heavy graphics or product shots, keeps you in control of what gets cropped and how sharp the result looks.

Posting several images in a batch? See the bulk resize guide — set the width once and process the whole set together.