Open Graph checker

What the Open Graph checker shows

The Open Graph checker fetches a page and shows three things: the share card its tags produce, a list of what is missing or too long, and every tag it found. It reads the Open Graph tags, the Twitter card tags, the <title>, the meta description and the canonical link, and follows redirects first so you see the page visitors actually land on.

What Open Graph is

Open Graph is a set of <meta> tags in a page's head that tell other sites how to present a link to it: the title, a one-line description and an image. Facebook introduced it in 2010 and everything that unfurls links now reads it, including LinkedIn, X, Slack, Discord, iMessage and WhatsApp. Many directories read it too when they build your listing.

Without the tags, each platform guesses. It takes the <title>, the first paragraph it finds and whatever image comes first, which is usually a logo stretched to fit or nothing at all.

The tags that matter

Four Open Graph tags and one Twitter tag cover every platform. The rest are optional.

og:site_name and og:type are worth the two lines. Separate twitter:title and twitter:image tags are not needed; X falls back to the Open Graph ones.

The og:image

The og:image should be 1200 by 630 pixels, show the product's name and what it does in large type, and still read at a third of that size. It is the largest thing in any share card and the only part most people look at. A screenshot of the interface works if the text in it is legible small; a logo on a plain background wastes the space.

• Absolute URL. /og.png fails on several platforms. Use the full https address.
• PNG or JPG. SVG is not supported anywhere, and WebP is patchy.
• Keep the edges clear. Some platforms crop to square. Put nothing important in the outer tenth.
• One per page if you can. A pricing page or a guide with its own image gets more clicks than one reusing the homepage's.

Why it matters before you submit

Directories copy from your page. Some read the tags outright: Awesome Indie drafts the whole listing, name, tagline, description and logo, from the link you give it. The rest ask you to type the same things into a form. Of the 126 directories we track, 56 ask for a logo, 39 for a tagline or short description, and 18 for screenshots. Fazier caps the tagline at 60 characters, the same limit a good og:title meets.

So fix the tags once, before the first submission. The title and description you settle on here become the tagline and description you paste into every form, the card that shows when a directory tweets your launch, and the preview in every founder community you post to. The full list of what to have ready is in the product launch checklist.

When a preview won't update

A preview that won't update is cached, not broken. Platforms store the card the first time a URL is shared and keep it for days. Check the page here first; if the checker shows the new tags, your site is right and the platform is stale.

• LinkedIn: paste the URL into Post Inspector to refetch it.
• Facebook and WhatsApp: use the Sharing Debugger and press Scrape Again.
• X, Slack, Discord: no manual refresh. Add ?v=2 to the URL you share, or wait a few days.

If the checker shows the old tags too, the page itself is cached at your host or CDN, or the tags are added by JavaScript after load. Crawlers do not run scripts, so Open Graph tags have to be in the HTML the server sends.

What to do next

1. Check your homepage and fix everything marked Missing.
2. Check your pricing page and any page you plan to share on launch day.
3. Copy the final title and description into a note. They are your tagline and short description for every directory form.
4. Get the free rank plan. It puts the directories that fit your product in order and lists what each one asks for.