Add bold and italic text, count characters, and preview the "…see more" cut.
- Runs in your browser
Social content
Open Graph preview
See how a link will look on LinkedIn, Facebook, and X before anyone shares it. Check a live page's tags and share image, or write the tags yourself and test an image from your device.
- Free
- No sign-up
- Runs in your browser
- Checks live pages
Three steps
How it works
Enter a page address to check it, or switch to writing the tags yourself.
Review the previews and fix what's flagged, such as a missing or undersized image.
Copy the meta tags into your page's head, then check the page again.
GuideReviewed
How to make every shared link look right
What Open Graph tags do
When someone shares a link, LinkedIn, Facebook, Slack, and most messaging apps read the page's Open Graph tags to build the preview card: og:title, og:description, og:image, og:url, and og:type. Without them, each platform guesses, and it often picks the wrong image or none at all.
X reads the same og: tags. Its own twitter:card tag only chooses the card style, such as the large image card, and twitter:site credits your X account.
Share image sizes that work everywhere
One image can serve every platform if you size it for the strictest one.
- Use 1200×630 pixels, about 1.91:1. It meets LinkedIn's 1200×627 minimum and matches Facebook's recommendation.
- Keep the file under 5 MB, the limit for LinkedIn and X. Facebook allows up to 8 MB.
- Use JPG or PNG. X doesn't accept SVG, and most platforms won't show it.
- Keep text and logos away from the edges. X shows images closer to 2:1, so it trims a little from the top and bottom.
Why your preview didn't update
Platforms cache link previews, sometimes for days. After you change your tags, ask LinkedIn and Facebook to read the page again with LinkedIn's Post Inspector or Facebook's Sharing Debugger. X has no public refresh tool, so new posts can show the old card for a while.
Each page needs its own tags with absolute addresses (starting with https://). Tags added by JavaScript after the page loads are often missed, because most platforms don't run scripts when they fetch a page.
Frequently asked
Questions, answered.
What people ask before they use the Open Graph preview.
Meta tags in a page's head, defined by the Open Graph protocol, that tell platforms which title, description, image, and address to show when the page is shared. The protocol requires og:title, og:type, og:image, and og:url.
1200×630 pixels is the safest choice. LinkedIn asks for at least 1200×627, Facebook recommends 1200×630 and shows a small thumbnail below 600×315, and X's large card uses a 2:1 image of at least 300×157.
LinkedIn caches link previews. Update your tags, then paste the address into LinkedIn's Post Inspector so it fetches the page again.
Mostly no. X falls back to your og:title, og:description, and og:image. Add twitter:card to choose the large image card, and twitter:site to credit your X account.
Yes. In Write tags, choose an image from your device. It stays in your browser; the tool reads its size and shows it in each preview.
Our server fetches the public page and its share image, reads the tags, and shows you the result. We keep it for a few minutes so repeat checks are quick. Pages behind a login can't be checked.
More free tools
All free toolsWrite your slides, pick a template and colors, and download a PDF for LinkedIn.
- Runs in your browser
Check one draft against every platform's limit, counted the way each platform counts.
- Runs in your browser
Related guides
- LinkedIn content strategy for B2B: why the company page is the smallest partBuild a LinkedIn content strategy for B2B across the company page, founder and team, with a format guide, posting evidence and a measurement table.
- How to repurpose content across channels without losing the pointCheck what a source really supports, then adapt it into an article, LinkedIn post, carousel, and short video with a reusable worksheet.
- Social media automation: what to automate, what to keep human, and how to set it upLearn what social media automation can safely handle, what to keep human, what LinkedIn, X, and Meta allow, and how to run a weekly workflow.
- Zero-click content distribution: how to reach buyers who never clickContent distribution for buyers who never click: a channel map, native posts, dark social, AI answers, a lean-team plan, and how to measure it.
From Ampere
A great preview needs something worth sharing.
Ampere is an AI marketing agent that drafts the posts, carousels, and image posts that go with your links, made from your saved Brand memory and ready for your review.
No card required