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OG image size: 1200×630 and the rules per platform
Use 1200×630 px (1.91:1), PNG or JPEG, under 1 MB. That one image works well on every major platform.
| Platform | Guidance |
|---|---|
| 1200×630 recommended. Minimum 200×200. Images under about 600 px wide show as a small thumbnail. Max 8 MB. | |
| 1200×627 recommended (1.91:1). | |
| X | summary_large_image uses a 2:1 ratio (min 300×157). summary uses 1:1 (min 144×144). Max 5 MB. JPG, PNG, WebP and GIF (first frame). |
| Uses og:image. Small files (a few hundred KB) load most reliably. | |
| Slack / Discord | Use og:image or twitter:image. Large images show as a big preview. |
Safe zone
Platforms crop differently (1.91:1 vs 2:1 vs square thumbnails), so keep text and logos within the central ~1000×500 area. SVG isn't supported by Facebook, LinkedIn or X. The previewer reads your image's real pixel dimensions and file size.
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