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Best Image Size for Blogs and Social Media in 2026

The ultimate guide to image dimensions for every platform — WordPress, Instagram, Twitter, Facebook, and more.

December 15, 2025 6 min read Aashish Nepal

Why Image Dimensions Matter

Uploading images at the wrong size causes platforms to resize and recompress them, often resulting in blurry, pixelated outcomes. Using the correct dimensions ensures your images always look their sharpest.

Blog Image Sizes

Featured image: 1200×630px (16:9 ratio) — also used for social sharing

In-post images: 800px wide maximum, height proportional

Thumbnails: 300×200px or 400×300px

Social Media Image Sizes 2025

Instagram

  • Square post: 1080×1080px
  • Portrait post: 1080×1350px (4:5)
  • Story/Reels: 1080×1920px (9:16)
  • Profile picture: 320×320px

Facebook

  • Shared image: 1200×630px
  • Cover photo: 820×312px
  • Profile picture: 170×170px
  • Story: 1080×1920px

Twitter/X

  • In-stream image: 1600×900px (16:9)
  • Profile picture: 400×400px
  • Header: 1500×500px

LinkedIn

  • Post image: 1200×627px
  • Profile picture: 400×400px
  • Cover photo: 1584×396px

YouTube

  • Thumbnail: 1280×720px (minimum)
  • Channel art: 2560×1440px

Use Our Resize Tool

Our free Image Resize tool lets you resize any image to exact pixel dimensions in seconds. Just upload, enter your target dimensions, and download the perfectly sized result.

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