Link preview checker
See your link before the world does.
A free tool that shows how your link will look when shared on X, Discord, Slack and LinkedIn, then tells you which tags to fix. For developers, marketers and site owners.
See your link before the world does.
From peekly.app
PEEKLY
See it before they do.
Peekly
See your link before the world does.
Check the X, Discord, and Slack card before you ship the link.
PEEKLY
See it before they do.
See your link before the world does.
Check the X, Discord, and Slack card before you ship the link.
PEEKLY
See it before they do.
X · Discord · Slack · Facebook · LinkedIn · WhatsApp
One fetch. The cards, the checklist, the meta block.
Before / after
Same link. Fixed tags.
A missing image, a relative og:image, and a title that gets cut off. Then the tags that repair it.
Peekly — See your link before the world does and catch every broken card
A relative image path and a title the card cannot hold.
See your link before the world does.
Absolute image, a title that fits, and a large X card.
PEEKLY
See it before they do.
head diff
exact tags
- <meta property="og:image" content="/og.png" />+ <meta property="og:image" content="https://peekly.app/og.png" />- <meta property="og:title" content="Peekly — See your link before the world does and catch every broken card" />+ <meta property="og:title" content="See your link before the world does." />+ <meta name="twitter:card" content="summary_large_image" />
$9
One time
A written fix for the batch.
Up to 25 URLs. We check og:image, Twitter cards, size, redirects, and cache, then send copy-paste meta tags within 48 hours. The free single-URL check stays free.
What each platform reads
- X / Twittertwitter:card, twitter:* → og:* fallback1200×630 (min 300×157), < 5 MB
- Facebookog:title, og:description, og:image1200×630, 1.91:1
- LinkedInog:title, og:image (og: only)1200×627, 1.91:1
- Discordog:site_name, og:*, theme-color, twitter:cardLarge image needs summary_large_image
- Slackog:site_name, og:title, og:description, og:image1200×630
- WhatsAppog:title, og:description, og:imageKeep < 300 KB
Guidance based on each platform's public documentation and observed behavior. Platforms change their rules without notice.
FAQ
+Is Peekly free?
Yes. Checking a single URL is free forever — no signup and no limit on one-off checks. Batch watching and monitoring may arrive later as a paid Pro plan; the free single-URL tool stays.
+Why does my link show no image when I share it?
Usually one of four things: there's no og:image tag, the image URL is relative instead of absolute, the image is behind a login, firewall or bot block, or the file is too big or in an unsupported format like SVG. Peekly checks all four and tells you which one it is.
+What size should my og:image be?
1200×630 pixels (a 1.91:1 ratio) as a PNG or JPG under about 300 KB. That size works for large cards on X, Facebook, LinkedIn, Discord, Slack and WhatsApp.
+Do I need twitter: tags if I already have Open Graph tags?
X reads og:title, og:description and og:image as fallbacks, but you still need twitter:card set to summary_large_image if you want the big image card. Without it, X shows a small thumbnail.
+I fixed my tags but the old preview still shows. Why?
Platforms cache link previews, sometimes for days. Facebook and LinkedIn let you force a refresh with their own debugging tools. On X, Slack and Discord the cache usually expires on its own, or you can add a query string such as ?v=2 to the URL.
+Do you store the pages I check?
No. We fetch the page once to read its <head>, show you the result, and don't save the page or the result. We only fetch public http(s) URLs, and private or internal addresses are blocked.
+Are the previews pixel-perfect?
They're close approximations of each platform's current card layout, built from the same tags the platforms read. Platforms change their designs from time to time, so treat them as a very good guide rather than a screenshot.