Why Open Graph tags matter
When someone shares your link, the platform doesn't render your page — it renders your Open Graph tags. Get them wrong and your link shows up as bare text or with a random image, and click-through rates collapse. Facebook's own debugger now requires a login, and X removed its Card Validator preview, which is why a neutral, no-login checker is the fastest way to verify a page before you publish it.
What this checker validates
- Core OG tags —
og:title,og:description,og:image,og:url,og:type,og:site_name. - Twitter Card tags —
twitter:card, with correct fallback logic (X falls back to OG tags when Twitter-specific ones are absent). - og:image quality — the image is actually loaded to verify it resolves, plus dimension checks against the 1200×630 (1.91:1) recommendation and HTTPS/absolute-URL requirements.
- Search appearance — title and meta-description lengths against Google's display limits.
Platform requirements at a glance
| Platform | Image it uses | Notes |
|---|---|---|
| og:image, ≥600×315, ideal 1200×630 | Requires og:url to consolidate share counts | |
| X (Twitter) | twitter:image → og:image | twitter:card=summary_large_image for the big card |
| og:image, 1.91:1 preferred | Caches hard — use Post Inspector to refresh | |
| Discord | og:image | Also honours theme-color for the embed stripe |
| WhatsApp / Telegram | og:image (small square crop) | Large images may be cropped center-square |
| — | Uses title/description tags, not OG, for snippets |
Frequently asked questions
How do I check the Open Graph tags of a URL?
Enter the URL above and click Check. The tool fetches the page, reads its Open Graph, Twitter Card and standard meta tags, shows a preview of how the link will look on Google, Facebook, X, LinkedIn, Discord and WhatsApp, and flags anything missing or mis-sized.
Do I need to log in with Facebook to preview my link?
No. Facebook’s own Sharing Debugger requires a Facebook login; this tool doesn’t. X (Twitter) shut down its Card Validator preview entirely. This checker replaces both with zero accounts.
What size should my og:image be?
Use 1200 × 630 pixels (1.91:1 aspect ratio) — it renders sharp everywhere: Facebook, X large-summary cards, LinkedIn, Discord and WhatsApp. Keep the file under ~5 MB and always serve it over HTTPS with an absolute URL. This tool loads your actual image and verifies its real dimensions.
Which tags are required for a proper social preview?
The practical minimum is og:title, og:description, og:image and og:url, plus twitter:card (usually summary_large_image) for X. Recommended additions: og:type, og:site_name. The checker generates a copy-ready snippet with everything filled in.
Why does my page preview differently than the tags suggest?
Platforms cache aggressively. After fixing your tags, force a re-scrape: on Facebook use the Sharing Debugger’s “Scrape Again”, on LinkedIn use the Post Inspector, and on X simply wait (cache expires in roughly a week) or change the URL with a query string.
Can I check a page that is not deployed yet?
Yes — switch to the “Paste HTML” tab and paste your page’s HTML directly. Parsing happens in your browser, so nothing is uploaded and staging markup stays private (image size checks still need the image to be reachable).