Quick answer: The Facebook link share image size is 1200 × 630 pixels (1.91:1). That's the card that appears whenever someone posts a URL to your landing page, and it comes from the page's Open Graph tags, not from the feed uploader.

Direct feed uploads follow a different set of sizes.

Facebook size table

Placement Size (px) Ratio Notes
Link share / OG image 1200 × 630 1.91:1 The most important image for launches
Square feed image 1080 × 1080 1:1 Displays reliably on mobile
Portrait feed 1080 × 1350 4:5 Capped in the feed
Story 1080 × 1920 9:16 Keep ~250 px clear top and bottom
Reel 1080 × 1920 9:16 Full-screen
Cover photo 1125 × 633 ~1.78:1 Stretches on desktop
Profile picture 1024 × 1024 1:1 Circular

The link share and OG dimensions match the standard used by X, LinkedIn, Slack, and most messengers, and the figures align with current 2026 size guides.

Why the OG image is the one to fix

When you paste a URL in a Facebook post, the scraper reads the page's og:image meta tag and builds the link card. A missing or wrong OG image shows up as a blank gray box or a random crop of the page, and it follows every single person who shares the link.

The launch fix is simple:

  1. Create a 1200 × 630 image with the product name, the one-line value prop, and a visual.
  2. Host it on the landing page.
  3. Add the og:image, og:title, and og:description tags.
  4. Re-run the Facebook Sharing Debugger to force a refresh if the card is cached.

The same file works on X and LinkedIn, so this is one image that covers every link share. See Open Graph image size for the full how-to.

Direct feed posts

If you upload an image directly rather than sharing a link, square 1080 × 1080 is the safest choice for mobile feeds, and portrait 1080 × 1350 is allowed but trimmed. Landscape images display at 1.91:1. Stories use 1080 × 1920 with the same safe-zone rule as Instagram, because the top and bottom UI overlays are similar.

Frequently asked questions

What is the best image size for a Facebook launch post? If the post is a link, fix the 1200 × 630 OG image. If it's a direct image upload, 1080 × 1080 square is the reliable choice.

Why does Facebook show the wrong image when I share my link? The scraper cached the page at an earlier time, or the og:image tag is missing or under-sized. The Sharing Debugger both reports and refreshes it.

Can I use the same OG image for X and LinkedIn? Yes. 1200 × 630 is the standard link-card size across all three.

Is there a file size limit? The image should be under 8 MB for a standard feed image; OG images should stay reasonably small to load quickly and not time out the scraper.

Do Facebook Stories need a different size? They're 1080 × 1920, the same as Instagram Stories, with the same center-safe design.

If you build only one image this week, make the 1200 × 630 OG image and run the debugger. The complete platform table is here.