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Open Graph Image Size Guide 2026

The complete reference for Open Graph image dimensions, aspect ratios, and file formats across all major social media platforms. Stop guessing sizes.

Updated December 2025 3 min read

The Universal Golden Rule

If you can only build ONE image for your website, make it 1200×630px. Keep the file size under 1MB and save it as a JPG or WebP. This satisfies 95% of all social platforms.

Platform Cheat Sheet

Facebook

Optimal1200x630px
Ratio1.91:1
Max Size8MB

X / Twitter

Optimal1200x600px
Ratio2:1
Max Size5MB

LinkedIn

Optimal1200x627px
Ratio1.91:1
Max Size5MB

Slack

Optimal1200x630px
Ratio1.91:1
Max Size12MB

Discord

Optimal1200x630px
Ratio1.91:1
Max Size10MB

WhatsApp

Optimal1200x630px
Ratio1.91:1
Max Size300KB (Critical)

Aspect Ratio Masterclass

1.91:1 (The Standard Wrapper)

The golden mathematical ratio used by Facebook, LinkedIn, Discord, and Slack. It's wide enough to look cinematic but tall enough to fit text.

  • 1200x630
  • 600x315

2:1 (The Twitter/X Card)

Twitter uniquely uses an exact 2:1 rectangle. If you supply a 1.91:1 standard image, Twitter will razor-crop a tiny sliver off the top and bottom. Keep text away from the absolute edges.

  • 1200x600
  • 800x400

1:1 (The Messenger Square)

Used specifically by WhatsApp (without high-res enabled), iMessage thumbnails, and older summary-card implementations. If an image is too small to render wide, platforms fallback to cropping the dead-center square.

Optimization Checklist

  • Absolute URLs OnlyNever use relative paths (/images/og.jpg). Slack and Facebook crawlers will instantly fail. Use https://yourdomain.com/images/og.jpg.
  • Explicit DimensionsHardcode og:image:width and og:image:height tags. This prevents Facebook from having to parse your image asynchronously, ensuring it previews on the very first share.
  • WhatsApp's Killer LimitWhatsApp frequently drops image previews entirely if the image exceeds 300KB. Compress aggressively if WhatsApp is your primary vector.

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