Design & Social Media 7 min read

The Ultimate Social Media Image Size Guide (Instagram, YouTube & Twitter)

By Compy Image Team Published August 12, 2026

The Ultimate Social Media Image Size Guide (2026 Edition)

Posting images with incorrect dimensions leads to automatic cropping, blurry compression, and pixelated banners across social media platforms.

To help you present your brand cleanly, we have compiled the definitive guide for exact pixel resolutions, aspect ratios, and recommended image formats for Instagram, YouTube, Twitter (X), and LinkedIn.


1. Instagram Image Dimensions

  • Instagram Square Post: 1080 x 1080 px (1:1 Aspect Ratio)
  • Instagram Portrait Post: 1080 x 1350 px (4:5 Aspect Ratio)
  • Instagram Landscape Post: 1080 x 566 px (1.91:1 Aspect Ratio)
  • Instagram Story & Reels: 1080 x 1920 px (9:16 Aspect Ratio)
  • Profile Picture: 320 x 320 px (1:1 Square)
  • Tip: Use the 4:5 Portrait format for Instagram feed posts to take up maximum screen real estate on mobile devices. Crop your image instantly with our Image Cropper (1:1, 16:9 & 9:16 presets).


    2. YouTube Image Dimensions

  • YouTube Video Thumbnail: 1280 x 720 px (16:9 Aspect Ratio, Max 2 MB)
  • YouTube Channel Banner: 2560 x 1440 px (16:9 Aspect Ratio)
  • YouTube Profile Picture: 800 x 800 px (1:1 Square)
  • Tip: YouTube limits thumbnails to 2 MB. If your thumbnail exceeds 2 MB, use our Exact KB Target Image Compressor to set a limit under 2000 KB.


    3. Twitter / X Image Dimensions

  • Twitter In-Feed Post: 1600 x 900 px (16:9 Aspect Ratio)
  • Twitter Header Cover: 1500 x 500 px (3:1 Aspect Ratio)
  • Twitter Profile Picture: 400 x 400 px (1:1 Square)
  • Tip: Easily resize graphics with built-in presets using our Image Resizer.


    4. LinkedIn Image Dimensions

  • LinkedIn Shared Post: 1200 x 627 px (1.91:1 Aspect Ratio)
  • LinkedIn Cover Banner: 1584 x 396 px (4:1 Aspect Ratio)
  • LinkedIn Company Logo: 300 x 300 px (1:1 Square)

  • How to Quick-Resize & Protect Photos for Any Platform

    Need to adapt your graphics for multiple social platforms instantly? Use our free suite of browser tools:

  • Image Resizer: Features built-in one-click presets for Instagram Square, YouTube Thumbnails, and Twitter Headers.
  • Image Cropper: Visual interactive cropper with fixed 1:1, 16:9, and 9:16 aspect ratio presets.
  • Image Converter: Convert PNG & JPG images to WebP format for 30% smaller sizes. Read Why Convert PNG to WebP.
  • Image Compressor: Enforce exact KB target sizes so your thumbnails never exceed platform upload caps (e.g. YouTube's 2 MB limit). Read How to Compress Without Losing Quality.
  • EXIF Stripper: Clean hidden GPS coordinates before posting photos publicly. Read How to Remove EXIF GPS Data.
  • More Performance & Optimization Guides