Open Graph image size
Facebook, LinkedIn, WhatsApp, Slack and Discord all read this.
Cropped in your browser · your image is never uploaded
1200 × 630, roughly 1.91:1. Set it once as og:image and Facebook, LinkedIn, WhatsApp, Slack, Discord and X all use it. It is the highest-leverage image on any website.
How to use the open graph image size
One image, many croppers, is the thing to design around. The 1.91:1 frame is what Facebook and LinkedIn show, X uses almost the same for a large summary card, but several chat apps crop toward square, so a design with text running to the left and right edges loses it in Slack or WhatsApp. Keeping the important part in a centred square inside the 1200 × 630 solves it. Two practical rules: use an absolute URL for og:image, since relative paths silently fail, and remember that Facebook caches aggressively. Changing the image does not change the preview until you refresh it through their Sharing Debugger.
Questions
1200 × 630 pixels, about 1.91:1.
Facebook, LinkedIn, WhatsApp, Slack, Discord, Pinterest and X all read it. Setting it once covers them all.
Facebook caches Open Graph data. Use their Sharing Debugger to force a re-fetch.
Yes. A relative path in og:image fails silently on most scrapers.
Some chat apps crop toward square. Keep the important part in a centred square.
No. X falls back to og:image if twitter:image is not set.