Meta & Open Graph preview
See your page's title, description, and social cards as platforms render them.
This Open Graph preview and meta tag checker fetches a page and shows its title, meta description, and the Open Graph and Twitter card data that platforms use to render link previews. You get a visual approximation of how the page will appear when shared on social networks and in search snippets, alongside the raw tag values. That makes it easy to fix a missing image, a truncated description, or a card that falls back to the wrong fields. With the tags dialed in, SJ Monitor's HTTP monitoring can later confirm the page stays reachable.
Frequently asked questions
Why does my link preview look wrong on social media?
Most often an og:image, og:title, or og:description tag is missing or pointing at the wrong value. The checker shows what each platform will read so you can correct it.
What's the difference between meta tags and Open Graph tags?
Standard meta tags like title and description feed search engines, while Open Graph and Twitter tags control how links render on social platforms. A good page sets both.
Do social platforms cache previews?
Yes, many cache aggressively, so after you fix tags you may need to use the platform's own debugger to refresh the cached version.
What size should my og:image be?
A 1200x630 pixel image at roughly a 1.91:1 ratio is the safe default that renders well on most platforms. Smaller images may be downscaled, shown as a small thumbnail, or skipped entirely.
Why does my preview image not show at all?
Common causes are an og:image URL that isn't absolute (it must include https://), an image behind login, one that's too large, or a stale platform cache. Make the URL absolute and publicly reachable, then re-scrape.
Do I still need a regular title and meta description?
Yes. The standard title and meta description feed search engines and act as fallbacks, while Open Graph and Twitter tags control social cards. Set both so every surface renders well.
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