# Open Graph checker

> Free Open Graph checker: see the og:title, og:description, og:image, Twitter Card tags, canonical URL and favicon any page serves to link previews. No sign-up.

Paste a URL and this Open Graph checker fetches the page the way a link-preview crawler does, then lists the tags a social network or chat app reads to build its preview: og:title, og:description, og:image, og:type, og:site_name, the Twitter Card title, description and image, the HTML title, meta description, canonical URL and favicon.

## Call it without a key

```bash
curl "https://app.upapi.io/api/tools/open-graph-checker?url=https%3A%2F%2Fgithub.com"
```

Endpoint: `GET|POST https://app.upapi.io/api/tools/open-graph-checker`. JSON by default; send `Accept: text/markdown` for Markdown. No account and no key: each IP address gets 30 runs a minute and 300 a day across all of these tools.

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `url` | string | yes | The page to check, starting with http:// or https://. |

The same operation is `opengraph-parse.get` on the keyed API: https://api.upapi.io/opengraph-parse.get

## FAQ

### Does the checker run the page’s JavaScript?

No. It reads the HTML the server returns, which is what link-preview crawlers read too. Tags that a script adds after the page loads are not seen by most previews either, so they are not reported here.

### Why do I still see an old preview after fixing my tags?

Results for the same URL are cached for up to an hour, and every social network keeps its own copy of a preview as well. A change shows up here once the hour has passed; each network refreshes on its own schedule.

### Can it reach a page on my local network?

No. Private, loopback and link-local addresses are refused, including through a redirect, so only pages on the public internet can be checked.

### Can I call it from code?

Yes: send a GET request to the endpoint shown on this page with the url parameter; no key is needed. Without a key each IP address gets 30 runs a minute and 300 a day across all free tools. For more, the same operation is available with an upAPI key at 1 unit per call.

Updated 2026-10-21.