How do I use the link preview checker (Open Graph)?
- Enter the page URL you want to share.
- Press Check preview and look at the preview and tag table.
- Fix the listed issues, then refresh the cache in the Facebook Sharing Debugger.
The four tags every page needs
og:title, og:description, og:image and og:url — plus og:image:width and og:image:height so platforms can show the large card immediately, and twitter:card for X.
Link preview checker (Open Graph): frequently asked questions
Why is my WhatsApp link preview not showing?
Common causes are a missing og:image, an image that is too large or blocked, a relative image URL, or a firewall that blocks the preview fetcher. This checker shows which applies.
What size should the og:image be?
1200 × 630 px, as a JPEG under about 300 KB, served over https.
Why does an old preview still appear?
Platforms cache previews. Use the Facebook Sharing Debugger’s “Scrape again” button, LinkedIn’s Post Inspector, or share in a new WhatsApp chat.
Do I need Twitter tags as well?
X falls back to Open Graph for most fields, but add twitter:card = summary_large_image to get the large image card.
What is Open Graph?
A set of meta tags (og:title, og:description, og:image, og:url) that tell social apps how to show your link.
Can Cloudflare block previews?
Aggressive bot settings can block preview fetchers. If tags are correct but previews fail, check your firewall events.
Should every page have its own image?
Ideally yes. Page-specific images get more clicks than one generic logo.
Does it work for WordPress?
Yes. SEO plugins such as Yoast or Rank Math set these tags; this checker shows what they output.
Will this tool improve my rankings?
It helps you find and fix issues. Rankings depend on content, technical health and authority together; our SEO team can help with the rest.
Is the link preview checker (open graph) free?
Yes. It is free with no sign-up and no usage limits for normal use.