OG Tag Checker

Enter any URL to extract its Open Graph and Twitter Card tags, preview how the link will look when shared, and see exactly which recommended tags are missing.

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Runs in your browser

Guide

What Open Graph tags do

Open Graph (OG) tags are HTML meta tags that tell social platforms how to display your link when it is shared: the title, description, and preview image. Enter any URL and this checker fetches its OG and Twitter Card tags, previews the resulting share card, and lists exactly which recommended tags are missing.

Why a link preview looks wrong

When a shared link shows the wrong title, no image, or stale content, the cause is almost always the OG tags: they are missing, point to a broken image, or were cached by the platform before you updated them. Social networks cache aggressively, so after fixing your tags you often need to ask the platform to re-scrape the URL (for example with Facebook's Sharing Debugger) before the new preview appears.

The ideal image and text sizes

The recommended og:image is 1200 by 630 pixels (a 1.91:1 ratio), which displays cleanly as a large card on most platforms without awkward cropping. Keep og:title concise (around 60 characters or fewer) and og:description to roughly one or two sentences, since long values get truncated in the card.

Do you need both OG and Twitter tags?

Open Graph is read by Facebook, LinkedIn, and many others, and X (Twitter) will fall back to OG tags if no Twitter Card tags are present. So at minimum, set complete OG tags. Adding the Twitter-specific tags (twitter:card, twitter:image) gives you finer control over how the card looks on X. This checker shows what each platform will use and what is absent.

Last updated: July 2026

Frequently Asked Questions

What are Open Graph tags?

Open Graph (OG) tags are <meta> tags in a page’s <head> that control how the page appears when shared on social platforms - the title, description, and image of the preview card. They use the property="og:..." format.

Why does my link preview look wrong on Facebook?

Usually because og:image is missing, too small, or blocked, or because Facebook cached an old version. Fix the tags, then re-scrape the URL in Facebook’s Sharing Debugger to refresh the cache.

What is the ideal og:image size?

Use 1200×630 pixels (a 1.91:1 ratio) for a large preview card. Keep the file under about 5MB and use an absolute HTTPS URL so every platform can fetch it.

Do I need both OG and Twitter Card tags?

X (Twitter) falls back to Open Graph tags when Twitter-specific ones are absent, so OG tags alone often work. Adding twitter:card (and optionally twitter:site) gives you explicit control over the X preview.

How long should og:title and og:description be?

Keep og:title around 40–60 characters and og:description around 60–110 characters so they are not truncated across platforms. Front-load the most important words.

How do I fix a missing preview image?

Add an og:image tag with an absolute HTTPS URL to an image of at least 1200×630, make sure it is not blocked by robots.txt, then re-scrape the page in the platform’s debugger to clear the old cache.