Free tool

Share preview

When someone pastes your link in a post or a message, the network reads a few hidden tags to build the card. See what they show, and what to fix before you share.

Try with physalisdesign.com, github.com

The tags that matter

og:image

The image

1200 × 630 px, JPEG or WebP, under 300 KB. Keep text away from the edges: some networks crop.

og:title

The title

Written for people, not for Google: what will they get by clicking?

og:description

The description

One or two sentences. Facebook shows about two lines, Google about 155 characters.

After a change

Facebook, LinkedIn and messaging apps keep the preview in memory. Once your tags are fixed, paste the address into Facebook's Sharing Debugger or LinkedIn's Post Inspector to force them to read it again.

On WordPress, an SEO plugin (Yoast, Rank Math, SEOPress) writes these tags for you: set a default image in its settings and a specific one on important pages.