Open Graph preview

Check how your page looks when someone shares it, before you post it.

Fetched by our server

To read a web page, our server fetches it and its sharing image for you. We don’t keep them or the address you check. How we handle your data

Sealed

Link previews

Only public web pages can be checked. Pages behind a login or on a private network can’t be reached.

Enter the address of a page to see its link preview on five popular apps.

How it works

  1. Paste the address

    Enter the address of the page you’re about to share: an article, a product or your home page.

  2. Compare the previews

    See your link card as it would roughly appear on Facebook, X, LinkedIn, Discord and Slack, side by side.

  3. Fix the tags

    The checks list missing or weak tags and image problems. Update your page, then check again.

Frequently asked questions

What are Open Graph tags?

They are meta tags in the head of a page, such as og:title, og:description and og:image. Social networks and chat apps read them to build the card shown when someone shares a link.

Why does this tool need your server?

Browsers don’t let one website read another website’s pages. Our server fetches the page and its sharing image for you, then sends back only what’s needed for the previews. Nothing is kept.

What size should my sharing image be?

Use 1200 × 630 pixels, a 1.91:1 ratio. Smaller images get a small preview, and images under 200 × 200 are often ignored. Keep important text away from the edges, as some apps crop the image.

Are these previews exactly what each app will show?

They are close approximations of each app’s usual layout. Apps change their designs from time to time and may cache an older version of your page, so the real card can differ slightly.

I updated my tags but the old preview still shows. Why?

Social networks keep a copy of each link for a while. Most of them offer a tool to refresh it, such as Facebook’s Sharing Debugger or LinkedIn’s Post Inspector.

Do I need separate tags for X (Twitter)?

Mostly no: X reads the Open Graph title, description and image. Add twitter:card with the value summary_large_image if you want a large image instead of a small square.

Install One For All on your computer

One For All then opens in its own window, like an app, straight from your desktop or home screen. Nothing to download from a store, and your files still stay on your device.

  1. Click the install icon at the right of the address bar, or open the browser menu (⋮).
  2. Choose “Install One For All” or “Install page as app”: a shortcut is added to your desktop and your apps.

Download this tool’s engine?

This tool works entirely in your browser. To do that, it needs to download the items below from One For All, just once. They are then kept on this device, so next time the tool starts right away.

Your files are never sent anywhere.