# Open Graph checker and social preview tool

> Free social preview checker for a live URL, pasted HTML, or an HTML file. Preview Google, LinkedIn, X, WhatsApp, Slack, and Discord, then generate corrected head tags.

Canonical: https://www.geminilaunch.com/tools/social-preview-checker
Last updated: 2026-11-12

## What it checks

- Page title and meta description for a search preview.
- Open Graph title, description, image, URL, and page type.
- Twitter Card type, title, description, and image.
- Canonical URL and public social image URL.
- Pasted and uploaded HTML is checked in the browser and is not sent to GeminiLaunch until the visitor chooses to publish.
- Platform previews are simulations; social apps may crop, cache, or rewrite a live card differently.

## How it works

- Enter a public URL, paste complete HTML, or choose an HTML file.
- Review the current metadata report and six preview formats.
- Edit the title, description, image, and canonical URL.
- Copy the generated tags or apply them to the HTML and publish it.

## Related

- [Tools hub](https://www.geminilaunch.com/tools)
- [AI website checker](https://www.geminilaunch.com/tools/ai-website-checker)
- [HTML to website](https://www.geminilaunch.com/tools/html-to-website)
- [Open Graph guide](https://www.geminilaunch.com/blogs/ai-website-seo-meta-open-graph)