Open Graph & Link Preview Tester
See how a link will look when shared and audit its OpenGraph, Twitter Card, and meta tags. Fetched on the edge — URL not stored, image never hotlinked.
published
- [FREE]
- [NO_SIGNUP]
- [USES_SERVER]
⚠ Unlike most of the site, this tool runs one request on a server because your browser cannot make it directly. It keeps none of your input — see the tool and the privacy page.
The Open Graph preview tester shows how a link will look when shared and audits the tags that drive it — fetched server-side because a browser can’t read another site’s HTML.
Why this tool has a server
Most tools here are 100% in your browser. This one needs a server for one step: fetching the target page’s HTML, which CORS blocks from client-side JavaScript. The page is fetched on Cloudflare’s edge and the tags are parsed in your browser. The URL is used for the request and not stored.
What it checks
- Preview card — a mockup from the resolved title, description, domain, and image. The image is shown as a link, not loaded — this site never hotlinks third-party images (it would leak your IP to that host).
- OpenGraph —
og:title,og:description,og:image,og:url,og:site_name,og:type, and any others. - Twitter Cards —
twitter:card,twitter:title,twitter:description,twitter:image. - Basic meta —
<title>, meta description, canonical link, favicon, final URL. - Missing-tag warnings — flags absent
og:title/og:description/og:image/twitter:card.
Note on platform previews
Facebook, LinkedIn, Slack, Discord, and X each read these same tags but apply their own caching, image rules, and fallbacks. This shows the raw tags a crawler sees; for the final say on a given platform, use that platform’s own debugger and clear its cache.
Related tools
- HTTP Header Checker — response headers, redirects, security grade.
- QR Code Generator — turn the final URL into a scannable code.
- What’s My IP — your IP, network, and connection details.
Frequently asked questions
Why does this need a server?
Reading a page's OpenGraph and meta tags means downloading its HTML, and browsers block cross-site HTML fetches with CORS. So the fetch has to happen on a server. This tool fetches the page from Cloudflare's edge, then parses the tags in your browser with a small parser. The URL is used for the request and not stored.
Why isn't the preview image actually shown?
On purpose. This site never hotlinks third-party images — loading a remote og:image in your browser would leak your IP/visit to that host and conflicts with the site's content-security policy. So the image is shown as a link you can open instead. Every text value (title, description, tags) is shown in full.
Which tags does it check?
OpenGraph (og:title, og:description, og:image, og:url, og:site_name, og:type, …), Twitter Cards (twitter:card, twitter:title, twitter:description, twitter:image), plus the page <title>, meta description, canonical link, and favicon. It flags missing recommended tags (og:title, og:description, og:image, twitter:card).
Why do Facebook / LinkedIn / Slack show a different preview than this?
Each platform reads the same tags but applies its own rules, caching, image-size requirements, and fallbacks — and some require their own crawler to have visited. This shows the raw tags a scraper sees; use each platform's own debugger (and clear its cache) for the final word on that platform.
Does it follow redirects?
Yes — it follows the URL to its final destination and parses that page's tags, showing the final URL.
Can I test a localhost or staging URL?
Only publicly reachable http/https URLs. Localhost, .local/.internal hostnames, and private IP ranges are blocked. For staging, expose it on a public URL (or a tunnel) first.