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Open Graph Previewer

Preview and generate social sharing tags.

Use the Open Graph Previewer tool

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What this open graph previewer does

Open Graph Previewer builds a share card from a title, description, site name and image URL, then outputs the `og:*` and `twitter:*` tags that produce it. It warns when a required field is missing or an image URL is not absolute.

Platforms cache share cards aggressively. After changing tags, use each platform's own debugger to force a refresh rather than assuming the new preview will appear immediately. This tool previews the tags you supply; it does not fetch the live page.

Why use it

  • Check a link before sending it to a large audience.
  • Add image and description tags that platforms understand.
  • Diagnose a blank or generic share card.

How to use it

  1. 1Enter the page title, description and canonical URL.
  2. 2Add a landscape image URL, ideally at least 1200 × 630 pixels.
  3. 3Copy the generated tags into the page head and re-scrape with each platform.

Worked examples

Complete card

Input

Title, 150-character description, 1200×630 image

Output

A large-image card with title and description visible.

Missing image

Input

No og:image

Output

Warning: platforms may show a blank card or choose an arbitrary image.

Common mistakes

  • Using a relative image URL, which social crawlers cannot resolve.
  • Assuming the preview updates instantly after a tag change; caches can hold old data.
  • Setting a description so long that the card truncates mid-sentence.

Frequently asked questions

Why does a platform show different text?
Some platforms rewrite titles or descriptions and may prefer their own metadata. The preview is a guide, not a guarantee.
What image size works best?
1200 × 630 pixels is a common landscape baseline. Keep important content away from the edges because crops vary.
Do Open Graph tags affect SEO?
They do not directly change rankings, but they change click-through and how the link looks when shared, which matters for traffic.

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