Quick answer: make your Open Graph image 1200 × 630 px (1.91:1), as a JPG or PNG under 5 MB, with the important content in the middle. That size isn't required by the Open Graph protocol — it is the practical default that meets Facebook's and LinkedIn's documented recommendations and works in most apps.
Check your image — make sure your share image meets Facebook's and LinkedIn's limits. The free Image Requirements Checker reads your actual file, shows which placements it fits, previews every crop and explains what to change. It runs in your browser; your image is never uploaded.
What an Open Graph image is
An Open Graph image is the picture apps show when someone shares your web page — on Facebook, LinkedIn, X, WhatsApp, Slack and many others. You set it in the page's <head> with the og:image tag.
Who requires what
| Service | What it documents | Status |
|---|---|---|
| Open Graph protocol | Defines og:image, og:image:width, og:image:height and og:image:alt — no required size or shape | Official (ogp.me) |
| Facebook / Meta | At least 1200 × 630 px recommended, about 1.91:1; minimum 600 × 315 for a large preview; absolute minimum 200 × 200; up to 8 MB | Official |
| At least 1200 × 627 px, 1.91:1, up to 5 MB | Official | |
| X (Twitter) | Large-image card about 2:1, at least 300 × 157 px, under 5 MB | Reported from X's developer docs (not confirmed) |
The Open Graph protocol only defines the tags; it sets no size. Each service decides how to show the image, which is why the numbers differ.
Why 1200 × 630 is the practical default
- It meets Meta's recommendation of at least 1200 × 630 px.
- It is just above LinkedIn's 1200 × 627 px minimum, at the same 1.91:1 shape.
- It is close to X's 2:1 large card, so very little is cropped there.
The 1.91:1 ratio
1.91:1 means the image is 1.91 times as wide as it is tall: 1200 ÷ 630 ≈ 1.9. Images of a different shape are cropped to fit the preview, usually from the centre, and some apps show a small square thumbnail instead.
Formats and file size
JPG or PNG is the safest choice; not every app shows WebP previews. Facebook accepts files up to 8 MB and LinkedIn up to 5 MB, but a 1200 × 630 JPG is normally well under 500 KB — and smaller files appear faster.
The tags
<meta property="og:image" content="https://example.com/images/share.jpg">
<meta property="og:image:width" content="1200">
<meta property="og:image:height" content="630">
<meta property="og:image:alt" content="A short description of the image">
<meta name="twitter:card" content="summary_large_image">Use an absolute URL (including https://). og:image:width and og:image:height tell apps the image size up front, and og:image:alt describes it for screen readers. The twitter:card tag asks X for the large-image preview; X falls back to og:image for the image itself.
Safe area and cropping
Different apps crop the edges slightly differently, and some show a square thumbnail. Keep logos and text in the centre of the image, away from the outer 10% or so, and use large type that is readable at small preview sizes.
Common mistakes
- Using a relative URL in
og:image, which many apps can't fetch. - A square or portrait image, which gets cropped to a thin strip.
- Text at the edges, which is cut off in some apps.
- A WebP or very large image that some apps don't display.
- Changing the image but not refreshing the app's cached preview (Facebook and LinkedIn cache previews).
Practical recommendations
- Export at 1200 × 630 px as a JPG under 1 MB.
- Keep the message in the centre.
- Set og:image, og:image:width, og:image:height and og:image:alt on every page.
Frequently asked questions
What size should an Open Graph image be?
1200 × 630 px (1.91:1) is the practical default. It meets Facebook's and LinkedIn's documented recommendations.
Is 1200 × 630 required?
No. The Open Graph protocol sets no size. 1200 × 630 is a recommendation that works well across Facebook, LinkedIn, X and messaging apps.
What aspect ratio is an OG image?
About 1.91:1. X's large card is about 2:1, which crops only a little from a 1.91:1 image.
Where is the Open Graph image used?
Anywhere a link to your page is shared and previewed: Facebook, LinkedIn, X, WhatsApp, Slack, Discord and many other apps.
What is the minimum Open Graph image size?
Facebook requires at least 200 × 200 px and shows a large preview from 600 × 315 px. LinkedIn asks for at least 1200 × 627 px.
Sources and how to read these values
Last reviewed: 8 October 2026, the same review as the Image Requirements Checker.
Each value above is labelled: a platform limit is documented by the platform and uploads outside it fail; an official recommendation comes from the platform's own help pages; a third-party recommendation is widely published but not confirmed on an official page; practical guidance is our advice. Platforms change their layouts without notice, so check important images in the app itself.
- The Open Graph protocol (ogp.me)
- Meta for Developers: images in link shares
- LinkedIn Help: make your website shareable on LinkedIn
- X large-image card: reported from X's developer documentation (page not accessible to confirm)