Test OG tags, debug og:image problems, and preview how your link appears on Facebook, X, LinkedIn, Slack, Discord, and more. Learn more about OG images or read our testing & debugging guide.
Paste a URL to check og:title, og:description, og:image, crawler access, image size, and the social card before you post it.
Paste a public URL and this Open Graph checker fetches the page like a crawler, reads the meta tags, checks the image, and shows the social preview. I use it as the first pass before opening the Facebook Sharing Debugger or LinkedIn Post Inspector.
The useful part is seeing the boring details in one place: the resolved og:image URL, image dimensions, file size, Twitter/X fallback, crawler-blocking problems, and what each preview card will probably show.
og:title, og:description, og:image, and og:urlPeople use different names for the same job. An Open Graph checker confirms the tags exist. An OG debugger helps explain why the preview looks wrong. A link preview tester shows the card before you post it. This page does all three for one URL.
If the tags are missing, it shows the snippet to add. If the image is blocked, missing, oversized, or using a risky file type, it calls that out. If the platform is probably showing an old card because of cache, the next step is the platform debugger.
Open Graph (OG) tags are HTML meta elements that control how your pages appear when shared on social media platforms, messaging apps, and link aggregators. Without them, platforms scrape whatever they find — often the wrong image, a truncated title, or no preview at all.
The four essential tags are og:title, og:description, og:image, and og:url. Together they define the title, body text, preview image, and canonical URL of your social media card. Full OG meta tags guide →
1. Enter a URL
Paste any publicly accessible URL — your homepage, a blog post, a product page.
2. Read the diagnosis
Check missing tags, crawler access, image reliability, and Twitter/X fallback.
3. Preview and retest
See the cards for Facebook, X, LinkedIn, Slack, Discord, WhatsApp, and more.
A social preview is not made by your browser. It is made by a crawler running from Facebook, LinkedIn, X, Slack, Discord, WhatsApp, or another platform. It fetches your HTML, reads the meta tags, fetches the image URL separately, then caches the result.
That is why an image can open fine in your browser and still fail in a social card. Your browser may have cookies, local network access, JavaScript, and a warm cache. The crawler has none of that. It needs a public URL, fast response, absolute https:// image URL, and HTML tags it can read without guessing.
I use this tool for the first pass, then the platform debugger when cache is the likely problem. The OG image debugging guide explains the crawler side in detail, and the bot directory lists the user agents each platform uses.
An Open Graph checker fetches a page and shows the OG tags in its HTML. The tags that matter most are og:title, og:description, og:image, and og:url.
Both. It checks the OG tags on the page and shows the preview those tags create. I use "checker" when I want to confirm the tags exist, and "debugger" when I am tracking down why a preview looks wrong.
Social platforms cache preview data separately from your browser. If this tool shows the new tags but Facebook or LinkedIn still shows the old card, use that platform's debugger to force a re-fetch. If the cache still sticks, change the image URL with a versioned path or query string.
The most common causes: the image URL is relative (not absolute), the image is behind authentication, the server blocks crawlers, or the platform cached a previous version. Use the OG Image Testing Guide for step-by-step diagnosis.
1200×630 pixels. This is the standard used by every major platform. See the OG image size guide for platform-specific requirements.
Design one manually in Figma or Canva, or use our free OG Image Generator for a quick template-based image. For automatic images on every page, MyOG.social generates them on-the-fly from your page content.
An OG debugger (or Open Graph debugger) is a tool that fetches a URL, reads its OG tags, and shows you the resulting social preview card. This tool does exactly that — plus it shows previews for multiple platforms at once. Facebook also has their own at developers.facebook.com/tools/debug.
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