What is the difference between Open Graph and Twitter Card tags?

Open Graph (og:) tags are the shared standard read by Facebook, LinkedIn, WhatsApp, Slack and most link-preview systems. Twitter Card (twitter:) tags are X/Twitter's own set. Twitter falls back to Open Graph for anything it is missing, so this generator emits both for the widest coverage.

What image size should I use for og:image?

A 1200 by 630 pixel image (a 1.91:1 ratio) is the widely-recommended size for a large share card. Use an absolute HTTPS URL, keep the file under a few hundred kilobytes, and avoid critical text near the edges where some platforms crop.

Why is my preview not updating when I share a link?

Most platforms cache the first preview they fetch. After changing your tags, re-scrape the URL with the relevant sharing debugger (for example the Facebook Sharing Debugger or the LinkedIn Post Inspector) to refresh the cached card.

What is the Open Graph Meta Tag Generator?

Free Open Graph meta tag generator. Fill in a title, description, URL and image to produce ready-to-paste og: and twitter: meta tags, with a live social share-card preview and one-click copy. Runs entirely in your browser. It runs free in your browser on Gera Tools, with nothing uploaded.

Open Graph Meta Tag Generator

Name: Open Graph Meta Tag Generator
Creator: Gera Tools
License: https://creativecommons.org/licenses/by/4.0/

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When a link to your page is pasted into a chat, a post or a message, the preview card that appears is controlled by Open Graph and Twitter Card meta tags. The Open Graph meta tag generator builds that markup for you from a few fields, shows a live preview of the resulting card, and lets you copy the whole block with one click.

One set of tags, every platform

Open Graph is the de-facto standard: Facebook, LinkedIn, WhatsApp, Slack, Discord and countless other tools read og: tags to build link previews. X/Twitter adds its own twitter: tags but falls back to Open Graph for anything missing. To get a correct card everywhere, this generator emits both families together, sharing the same title, description and image.

Getting the image right

The single biggest factor in a good-looking card is the image. Use an absolute HTTPS URL to a 1200 by 630 pixel graphic (a 1.91:1 ratio) for a large card, keep important content away from the edges to survive cropping, and keep the file reasonably small so it loads before the preview times out.

Validate and re-scrape

After pasting the tags into your page’s head, confirm them with each platform’s sharing debugger. Because previews are cached aggressively, you usually need to re-scrape a URL through the debugger after any change before the new card appears in real shares.