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OG image checker

See how a link looks when it is shared on X, LinkedIn, Facebook and Slack, and what is wrong with its share tags.

A link that carries its pictureExample
Acme RoofingRoof repair in Austinog:image · 1200 × 630

example.comRoof repair in AustinLeaks and storm damage fixed, most within a week.

og:title
Roof repair in Austin
og:description
Leaks and storm damage fixed, most within a week.
og:image
https://example.com/share/roof-repair.png

One image at 1200 by 630 at an absolute address, with a title and a line of its own. X, LinkedIn, Facebook and Slack all draw from these three tags.

What does it check?

Rules from the rulebook, and how many of the sites mttr has read miss each.

  1. Set a share imageSet og:image so links to the page carry a picture.
    69%of sites miss it

Questions

What size should a share image be?

1200 by 630 pixels covers X, LinkedIn, Facebook and Slack. Keep it under 5 MB and give it an absolute address in og:image.

Why does my link show the wrong image after I changed it?

Each network keeps its own copy of a link’s preview for a while. Changing the image’s file name, or adding a version to its address, makes them fetch it again.

Do I need twitter: tags as well as og: tags?

No. X falls back to og:title, og:description and og:image. Add twitter:card only to choose the large image layout.

The whole site

One page is one part. A read checks every page against the whole rulebook and says what to fix first.

Read a whole site