John Crockett

Social & Search Preview

Paste any link to see how it looks when someone shares it on Facebook, LinkedIn, X and messaging apps, and how it shows up in Google. You get the problems, the fixes and copy-ready tags. Free, no sign-up.

Why link previews matter more than they look

Every time someone shares your page, the preview is your ad. It's free distribution, earned by someone who liked your work enough to pass it on. A sharp image and a headline written for the feed turn that share into clicks. A broken or generic preview wastes it.

It's also one of the cheapest fixes in marketing. The tags take minutes to add, and once they're right, every future share benefits. That's the kind of owned-media work I love: build the asset once and let it keep paying off.

Social shares also feed search. Your social team is already doing SEO, whether anyone told them or not, and links that look credible in a feed get clicked, discussed and cited more.

What the tool checks

The share image. Whether og:image exists, loads for crawlers, is a supported format, and is big enough and the right shape for large link cards. It also checks the file size, because LinkedIn and X reject images over 5 MB and WhatsApp often skips heavy ones.

Titles and descriptions. Whether you've written separate copy for social feeds (og:title and og:description), whether there are conflicting duplicates, and whether your title and meta description will get cut off in Google.

Platform tags. twitter:card for X, og:url and canonical tags that agree with each other, og:site_name for messaging apps, image dimension tags that let Facebook show the image on the very first share, and a favicon for Google.

Crawler access. Whether the page and image return errors, redirect chains, or bot-protection blocks that would stop Facebook, LinkedIn and X from building a preview at all.

Why your fix might not show up right away

Platforms cache previews, sometimes for days or weeks. After you fix your tags, run your link through the platform's own tool to refresh it. Your results include links to the Facebook Sharing Debugger and LinkedIn Post Inspector. X refreshes on its own over time, and you can check the card in the post composer before you publish.

How it works

When you check a link, this site fetches the page once from Cloudflare's network, reads the tags in its head section and checks the share image's size and file type. Then your browser draws the previews and runs the checks. There's no AI and no paid API involved, and nothing about the links you check is stored. Repeat checks of the same link within two minutes use a cached copy, and each visitor gets 30 checks a day.

The previews are simplified drawings, not screenshots, so they won't match every platform pixel for pixel. Platforms redesign their cards often and display them a little differently on phones and desktops. The tags, sizes and problems the tool reports are what matter.

FAQ

Why does my link show the wrong image or no image on Facebook or LinkedIn?

The most common causes are a missing og:image tag, an image smaller than 200 x 200 pixels, an image address that redirects or is blocked by bot protection, and old previews in the platform's cache. This tool checks the first three. For the cache, use the Facebook and LinkedIn refresh links in your results after you fix the tags.

What size should my social share image be?

Use 1,200 x 630 pixels, saved as a JPG or PNG under about 1 MB. That ratio of roughly 1.91 to 1 fills the large link card on Facebook, LinkedIn and X. Keep text and faces away from the edges, because phones and some apps crop it.

What are Open Graph tags?

Open Graph tags are meta tags in a page's head section, like og:title, og:description and og:image. Facebook created the standard, and LinkedIn, Slack, iMessage, WhatsApp, Discord and many others now read the same tags to build link previews. X reads them too, plus its own twitter:card tag.

Does this tool store the links I check?

No. The page is fetched once, its tags are read, and the results go straight back to your browser. Nothing is saved except an anonymous daily count for the 30-checks-per-day limit, and your IP address is never stored.

Want your brand to be the answer?

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