Does Open Graph help SEO?

Not directly. Google does not use Open Graph tags for ranking. They decide how a shared link looks, which affects whether people click it and therefore whether the page earns visits and mentions.

What size should an og:image be?

About 1200 by 630 pixels, served over an absolute URL without a login, and small enough to fetch quickly. Keep any text on it large enough to read at card size.

Do I need both Open Graph and Twitter card tags?

Not necessarily. X falls back to Open Graph when the twitter: tags are missing. Add the twitter: tags when you want a different image or a different card type there.

Why does my link show the wrong image?

Usually a cached card from before your change, a relative image URL, or an image behind a login. Check the tag is absolute and fetchable, then share the link again.

What should og:url point to?

The canonical address of the page. That way shares through tracking parameters or alternative hosts are counted as the same page rather than several.

Open Graph

Open Graph is a protocol of meta tags that tells other platforms how to draw a link to your page. It was created at Facebook in 2010 and is read by LinkedIn, Slack, Discord, WhatsApp and most messaging apps. It is not a Google ranking signal: it decides whether a shared link looks worth clicking.

By Théophile Louvart, founder of Porteur · Updated 15 September 2026 · Markdown

The tags that matter

<meta property="og:title" content="Invoicing for freelancers">
<meta property="og:description" content="Send an invoice in twenty seconds. No account needed to try.">
<meta property="og:image" content="https://yourproduct.com/og.png">
<meta property="og:url" content="https://yourproduct.com/">
<meta property="og:type" content="website">
<meta property="og:site_name" content="Yourproduct">

og:title and og:description: written for the share, not copied from the page title if that title is dull out of context.
og:image: the one that decides the click. About 1200 by 630 pixels, under a few hundred kilobytes, reachable without a login.
og:url: the canonical address, so shares of the same page through different addresses count as one page.
og:type: website for most pages, article for a post with a date.

The image rules

Rule	Why
About 1200 by 630 pixels	The wide card shape every platform crops towards
An absolute URL	A relative path resolves against the wrong host in most crawlers
No login, no hotlink protection	The platform fetches it as an anonymous visitor
Text large enough to read at card size	Cards are shown small; a paragraph in the image is unreadable
Under a few hundred kilobytes	Slow images time out and the card falls back to a bare link

How to test it

Read the tags
View source and check the four that matter are present and absolute.
Post the link somewhere private
A draft message to yourself in Slack or a direct message shows the real card, which is the only test that matters.
Check one page of each template
The home page, a pricing page and one library page usually use different templates, and one of them is always missing the image.
Remember the caches
Platforms cache the card. After a change, the old image can persist for a while on links already shared.

Questions

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The tags that matter

The image rules

How to test it

Questions

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