Open Graph Checker

Paste any URL to preview how it looks when shared on X, Facebook, LinkedIn, Discord, Slack, and Google — and inspect every Open Graph, Twitter Card, and meta tag.

Try:

What is an Open Graph (OGP) checker?

The Open Graph Protocol (OGP) is a set of meta tags that tell social platforms and search engines how to display your page when it is shared. When someone posts your link on X (Twitter), Facebook, LinkedIn, Discord, or Slack, those platforms read tags like og:title, og:description, and og:image to build a rich preview card. This Open Graph checker fetches any URL, shows the preview each platform will render, and lists every tag so you can spot what is missing or wrong before you publish.

How to check your Open Graph tags

  1. 1

    Paste a URL

    Drop any public link into the box above — a blog post, product page, or your homepage.

  2. 2

    Review the social previews

    See exactly how the link renders on X, Facebook, LinkedIn, Discord, Slack, and in Google search results.

  3. 3

    Inspect and fix the tags

    Read the full list of Open Graph, Twitter Card, and meta tags, follow the suggestions, then update your page's <head> and re-check.

The Open Graph tags that matter

og:titleThe title shown on the preview card. Aim for 60 characters or fewer.
og:descriptionThe summary under the title. Around 110 to 160 characters works best.
og:imageThe preview image. Use an absolute https URL, ideally 1200x630 pixels (1.91:1).
og:urlThe canonical URL of the page being shared.
og:typeThe content type, such as "website" or "article".
twitter:cardHow X renders the link — usually "summary_large_image" for a big image.

Frequently Asked Questions

What is an Open Graph (OGP) checker?
An Open Graph checker is a free tool that fetches a web page and shows you the metadata that social platforms and search engines read, such as the og:title, og:description, og:image, and Twitter Card tags. Glasp's OGP Checker also previews how your link will actually look when shared on X (Twitter), Facebook, LinkedIn, Discord, Slack, and in Google search results, so you can fix issues before you post.
What is the Open Graph Protocol?
The Open Graph Protocol (OGP) is a set of meta tags, originally introduced by Facebook, that let any web page control how it appears when shared on social media. The most important tags are og:title, og:description, og:image, og:url, and og:type. When these tags are present, platforms display a rich preview card with a title, description, and image instead of a plain link.
Why is my link not showing an image or preview?
The most common reasons are a missing og:image tag, an og:image URL that uses a relative path instead of an absolute https URL, an image that is too small (most platforms want at least 1200x630 pixels), or a page that blocks crawlers. Run the URL through the checker to see exactly which tags are present and which are missing, then add or fix them in your page's <head>.
What image size should I use for Open Graph?
A 1200x630 pixel image (a 1.91:1 ratio) is the recommended size and works well across X, Facebook, and LinkedIn. Keep the file under about 5 MB and use an absolute https URL. For X's summary_large_image card, the same 1.91:1 image is used.
Does this OGP checker work for any website?
Yes. You can paste any public URL, not just Glasp pages. The tool fetches the page server-side, reads its metadata, and renders the social previews. It works for blogs, e-commerce pages, documentation, and more.
Why do platforms still show an old image after I update my tags?
Social platforms cache link previews. After updating your Open Graph tags, you usually need to clear the cache using the platform's own debugger (for example Facebook's Sharing Debugger or LinkedIn's Post Inspector) so it re-fetches the page. This checker always fetches a fresh copy, so it reflects your current tags.