Link Preview Tester
See exactly how your link renders when someone shares it on LinkedIn, X, or Slack, and which Open Graph tags are missing. Free, no signup.
Any public page. We read its Open Graph tags, nothing else.
Free, no signup. Nothing is stored.
Paste a link to see exactly how it will look when someone shares it.
Three steps, under 5 minutes.
Paste a link
Any public page. We read its Open Graph and Twitter Card tags.
See the card
The real preview, rendered the way each platform lays it out.
Fix what's missing
Every missing or broken tag, with what it costs you.
The preview is the whole ad
When a link gets shared, almost nobody reads the URL. They see a card: an image, a headline, and a line of description. That card is doing the entire job of persuading someone to click, and it is generated from three meta tags most sites never set deliberately.
A link with no og:image shares as a bare text row and gets a fraction of the clicks of one with a picture. It is among the cheapest fixes in marketing, and it stays broken on most sites for years because nobody ever looks.
What each tag actually controls
og:title sets the headline, and platforms fall back to your page title when it is missing, which is usually longer and stuffed with your brand name. og:description sets the summary, falling back to the meta description. og:image sets the picture, and has no fallback at all: if it is absent or served over plain http, you get no image.
twitter:card decides whether X shows a large image or a small thumbnail, and the difference in click-through is substantial. Setting it to summary_large_image is almost always what you want.
Caching is why your fix looks like it did not work
Every platform caches previews hard, often for days. So the usual sequence is: notice the card is wrong, fix the tag, re-share the link, see the identical broken card, and conclude the fix failed. It did not, you are looking at a cached copy.
The fix is to force a refresh through the platform's own debugger before you share it for real. LinkedIn, Facebook, and X all publish one. Run the link through it once after any change to og:image or og:title, and the new card propagates.
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How do I check how my link will look when shared?
Paste the URL above. The tool fetches the page, reads its Open Graph and Twitter Card tags, and renders the card the way LinkedIn, X, and Slack each lay it out, along with a list of anything missing or broken.
What are Open Graph tags?
Meta tags in a page's head that tell other sites how to display a link to it. The important ones are og:title, og:description, and og:image. Without them, platforms guess from your page title and often show no image at all.
Why does my link still show the old preview after I fixed it?
Platforms cache previews aggressively, sometimes for days. Your fix is live, you're seeing a cached card. Run the URL through the platform's own debugger once to force a refresh, then share it.
Why does my image not show up?
The two usual causes are no og:image tag at all, or an og:image served over http rather than https, which most platforms refuse to load. Both are flagged above if they apply. Size matters too: aim for 1200x630.
How is this different from CaptureFlow?
This checks the card around your link. CaptureFlow writes the post that goes with it, turning one idea into on-brand content for every platform and scheduling it for you.
A good link deserves a good post around it.
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