Check Open Graph and meta tags of any URL
Metadata
Social Preview
Open Graph — a markup protocol that allows you to control how your site appears when sharing links on social media (Facebook, VK, Telegram, etc.).
Basic tags: og:title — title, og:description — description, og:image — image (recommended size 1200x630px), og:url — canonical URL.
Twitter Cards — additional markup for Twitter/X. Card type (twitter:card) can be summary, summary_large_image, app, or player.
The check is performed server-side: the page HTML is loaded and meta tags are extracted from it.
Open Graph Tag Checker: Analyze and Debug OG Meta Tags
This online Open Graph checker lets you instantly analyze OG meta tags on any web page and preview how it will appear when shared on social media. The tool validates og:title, og:description, og:image and other tags, shows previews for Facebook, Twitter, and Telegram, and scores your markup quality.
What is Open Graph
Open Graph (OG) is a protocol created by Facebook that turns any web page into a rich social media object. When someone shares a link on Facebook, Twitter, LinkedIn, Telegram, or WhatsApp, the platform reads OG tags to generate a preview card with image, title, and description.
Properly configured OG tags increase link click-through rates by 2–3× compared to plain URL shares. Missing og:image is the most common reason for unattractive shared links.
Core OG tags
| Tag | Required? | Description | Recommendations |
|---|---|---|---|
| og:title | Yes | Object title | Up to 60 chars, can differ from <title> |
| og:description | Recommended | Short description | Up to 200 characters |
| og:image | Yes | Preview image URL | 1200×630px, JPG/PNG, max 8 MB |
| og:url | Yes | Canonical page URL | Without UTM parameters |
| og:type | Yes | Content type | website, article, product, video.movie |
| og:site_name | Recommended | Site name | Shown in preview card |
| og:locale | No | Content language | en_US, fr_FR |
Twitter/X Cards
| Tag | Value | Description |
|---|---|---|
| twitter:card | summary / summary_large_image / app / player | Card type |
| twitter:title | Text | Title (up to 70 characters) |
| twitter:description | Text | Description (up to 200 characters) |
| twitter:image | URL | Image (min 144×144px) |
Debugging and cache clearing
Social platforms cache OG data. After updating tags, old previews may persist for days. Use official debugging tools to force a refresh:
- Facebook — Sharing Debugger
- LinkedIn — Post Inspector
- Twitter/X — Card Validator
- Telegram — cache auto-clears after ~24 hours
FAQ
What is the optimal og:image size?
1200×630px (1.91:1 ratio) is the standard for Facebook, LinkedIn, and most messengers. For Twitter summary_large_image also use 1200×630. For square format (Twitter summary): 1:1, minimum 144×144px.
Do OG tags affect SEO?
Not directly — Google doesn't use OG as a ranking signal. Indirectly, well-configured OG tags improve shareability, generating backlinks and social signals that can boost rankings over time.
See also: meta tag generator, Schema.org generator.