Open Graph Checker
Validate Open Graph tags and preview how the page appears when shared on social media.
You paste a link into a LinkedIn post or a client Slack channel, and instead of a clean preview with a title, description, and image, you get a blank card or a broken thumbnail. It’s happened to nearly every guest post link we’ve helped place at some point the article itself is solid, but nobody set the Open Graph tags, so every share of it looks unfinished. By the time someone notices, the post has already gone out and the damage to click-through is done.
That’s the exact problem this tool solves. Our free open graph checker online pulls the actual og tags from a URL and shows you what platforms like Facebook, LinkedIn, and Slack will display before you hit publish, not after.
What an Open Graph Checker Online Actually Shows You
Open Graph tags are a small set of meta properties og:title, og:description, og:image, and og:url that control how a link looks when it’s shared on most major platforms. Without them, social networks fall back to guessing, usually pulling the page’s regular title tag and the first image they can find, which is often a logo or an ad rather than anything useful.
Run a page through our tool to check og tags online and you’ll see exactly what’s set, what’s missing, and whether the image meets the size platforms expect. We’ve audited enough client sites to know the image is where most setups break down Facebook and LinkedIn both want something close to 1200 by 630 pixels, and an image smaller than roughly 200 by 200 pixels often gets rejected from the preview entirely, leaving a blank card even when every tag is technically present.
Where This Actually Trips People Up
A handful of patterns come up repeatedly in the audits we run:
- A page has a proper title tag but no og:title, so the shared preview shows a generic site name instead of the actual headline
- The og:image points to a relative path instead of a full URL, which works fine in a browser but fails silently when a crawler tries to fetch it
- Facebook’s crawler cached an old version of the tags, so even after fixing the source, the preview still shows outdated information until the cache is cleared
- A CMS plugin sets Open Graph tags automatically but pulls the wrong featured image, one that was never meant to represent the article publicly
The caching issue is the one that catches people off guard most often. Fixing your og tags doesn’t automatically update what Facebook or LinkedIn already has stored. Each platform has its own debugger or cache-refresh tool, and until you run the page through it, the old broken preview keeps showing up no matter how correct your live tags are.
How the Checker Works
- Paste in the URL you want to check
- The tool fetches the page and reads every Open Graph and Twitter Card tag present
- It checks the image dimensions against platform recommendations and flags anything missing or undersized
- You get a preview mockup alongside the raw tag data, so you can see both what’s coded and what it will actually look like
Why This Tool Is Worth Using Before You Share
This checker is part of the free SEO toolkit we run alongside our guest posting services, built because we needed a fast way to confirm every placement looks right before a client campaign goes live not after a broken preview has already been shared with their audience. It’s the same check our own team runs on published guest posts as a final step. No signup, no cap on how many URLs you check, and nothing stored beyond the check itself.
One thing worth knowing: setting correct Open Graph tags doesn’t guarantee a specific ranking or traffic outcome. What it does is remove one common reason people scroll past a shared link without clicking a blank or broken preview reads as untrustworthy even when the actual content is good.
Common Questions
What’s the recommended og:image size?
Roughly 1200 by 630 pixels works best across Facebook, LinkedIn, and most other platforms.
Why does my preview still look wrong after I fixed the tags?
The platform likely cached the old version — use that platform’s own debugging tool to force a re-scrape.
Does this also check Twitter Card tags?
Yes, it reads Twitter Card properties alongside standard Open Graph tags in the same check.Run your link through our free open graph checker online now and see what your audience will actually see.