Free tool

Open Graph preview

See the card your link makes on X, LinkedIn, Slack, Discord and iMessage before you share it, then fix the og: and twitter: tags and the image behind it.

Example result

Free SEO and AI crawler tools

launchscaler.com

Passog:image

Your preview shows up here

Five link cards drawn from your tags, then each og: and twitter: tag checked, with the share image's size and format.

How it works

Three steps, about ten seconds

Enter a URL

The exact page you plan to share. Each page can carry its own card.

We read it like an app

We ask for the page as Facebook's link crawler does, then fetch the og:image and measure it.

We draw the cards

A close copy of each app's card from your tags and image, with every problem listed under them.

Reference

The tags a link card is built from

Required means required by the Open Graph protocol. For the image itself, use 1200 x 630 pixels, PNG or JPEG, under 5 MB.

Open Graph and X card tags, whether each is required and what it sets
Tag	Required	What it sets
`og:title`	Yes	The card's headline.
`og:type`	Yes	The kind of page: website for most.
`og:image`	Yes	The picture. Use a full https:// address.
`og:url`	Yes	The page's canonical address.
`og:description`	No	A sentence or two under the title.
`og:site_name`	No	Your site's name, which Discord shows above the title.
`og:image:width, og:image:height`	No	Let Facebook draw the card before the image has downloaded.
`og:image:alt`	No	A text description of the image for people who cannot see it.
`twitter:card`	For X	summary_large_image for the large picture, summary for a small square.

Fix it on your platform

Set your share card on your platform

Give every page you share its own og:title, og:description and og:image, with the image at 1200 x 630.

Next.js

Set openGraph and twitter in the page's metadata, or put an opengraph-image.png beside the page:

export const metadata = {
  openGraph: {
    siteName: "Your product",
    title: "Your product",
    description: "One line on what it does.",
    images: [{ url: "https://yourproduct.com/og.png", width: 1200, height: 630 }],
  },
  twitter: { card: "summary_large_image" },
};

WordPress

Yoast SEO and Rank Math each have a Social tab in the post editor for the share title, description and image.

Webflow

Open the page's settings and fill in the Open Graph settings: title, description and image.

Shopify

Set a site-wide social sharing image in Online Store, then Preferences. Products and collections share their own featured image.

Questions, answered

Link previews, in plain terms

What size should an Open Graph image be?

1200 x 630 pixels (1.91:1), PNG or JPEG, under 5 MB.
Facebook recommends at least 1200 x 630, and LinkedIn asks for at least 1200 x 627.

Why is my image not showing when I share a link?

The usual causes: no og:image, a relative image address, an image that does not load for the app's crawler, or an old card the app has cached.
This tool fetches the image the way an app would and tells you which one it is.

I fixed my tags, so why does the old card still show?

Apps cache a card when a link is first shared.
Facebook's Sharing Debugger and LinkedIn's Post Inspector fetch the page again, so new posts get the new card. Posts already shared keep the old one.

Do I need twitter: tags if I have og: tags?

X reads og:title, og:description and og:image when its own tags are missing.
Without twitter:card it may show only the small summary card, so set it to summary_large_image for the large picture.

Can I use SVG or WebP?

Use PNG or JPEG. X does not support SVG, and Facebook lists only JPEG, GIF and PNG as image types.

Are these previews exact?

They are close copies drawn from your tags and the image we fetched. Each app draws its own card and changes the design from time to time.

Is it free, and do you keep my results?

It is free and needs no account.
The small preview of your image is made from the bytes we fetched and sent back with the result. Nothing is saved to a database or published.

The guide

OG image not showing

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