How to check Open Graph image?
Paste a public page address above and submit. This checker reads the HTML and shows og:image when that tag is present, plus the title, description, URL, and type. It does not download the image to measure its size, and it does not see tags that a browser adds with JavaScript after the page loads. A private or localhost address is refused.
| Tag | What a share card uses it for |
|---|---|
| og:image | The preview image |
| og:title | The title on the card |
| og:description | The text under the title |
| og:url | The URL the card should point at |
| og:type | The kind of page, such as website or article |
What does OG mean in SEO?
OG means Open Graph. It is a set of meta tags, usually og:title, og:description, and og:image, that tell other sites how to build a preview card when someone shares the page. Facebook published the protocol. LinkedIn, Slack, and messaging apps read the same tags. Open Graph is not a Google ranking factor. The title tag and the page itself still do the SEO work.
Is Open Graph free?
Yes. The Open Graph tags are ordinary HTML, and there is no fee to publish them. This checker is free, with no account. Facebook's Sharing Debugger is a separate free tool on Facebook's site. Neither one charges to read the tags.
Is there a Facebook Open Graph debugger available?
Yes. Facebook publishes the Sharing Debugger at developers.facebook.com/tools/debug/. It shows the tags Facebook last scraped and can ask Facebook to fetch the page again. This checker is not that debugger. It reads the public HTML at the moment you submit, and it cannot clear Facebook's cache.
Which Open Graph tags does this checker read?
It reads seven properties from the first HTML response: title, description, image, URL, type, site name, and locale. A missing property is marked Not found. Tags added by JavaScript after the page loads are not included. The image is shown only when og:image is an absolute http or https URL.
| Tag | What it is for |
|---|---|
| og:title | The title on the share card |
| og:description | The text under the title |
| og:image | The preview image, as an absolute URL |
| og:url | The URL the card should open |
| og:type | website, article, or another type |
| og:site_name | The site name on the card |
| og:locale | The language of the card, such as en_US |
What size should an Open Graph image be?
Facebook recommends 1200 × 630 pixels for a link share, a wide 1.91:1 image. Smaller images still attach, and other apps crop the same file differently. This checker shows the image URL from the HTML. It does not download the file, so it cannot tell you the pixel size, the file weight, or whether the image returns an error.
Why does the share card still show an old image?
Facebook, LinkedIn, and chat apps keep the last scrape. Updating the tags on your page does not update a card they already stored. This checker always reads the HTML now, so it can show a new og:image while Facebook still shows the old one. Use Facebook's Sharing Debugger to ask Facebook to fetch the page again. If the image file URL did not change, some caches keep the old picture until the URL does.
Facebook's own debugger is at developers.facebook.com/tools/debug.