Facebook · Open Graph

Facebook Sharing Debugger alternative

SocialImageKit is an independent tool — not affiliated with Meta or Facebook. Meta’s officialSharing Debuggerstill owns “Scrape Again” and cache refresh. What we add: an instant, no-login preview of the tags crawlers see so you fix the page before you scrape.

Preview your Facebook link nowCreate a 1200×630 image
  • 1200 × 630Image size
  • 1.91:1Aspect
  • 8 MBMax file
  • 200 × 200Min size

How it works

How Facebook builds a link preview

When someone shares a URL, Meta’s crawler fetches the public HTML and reads Open Graph tags. The usual fields are og:title,og:description, og:image,og:url and og:type. Tags must exist in the first HTML response — not only after client-side JavaScript.

For the image, use 1200×630 (1.91:1). Meta documents a200×200 absolute minimum and recommends at least 1200×630 for large link cards. Keep the file under 8 MB, use an absolute https URL, and prefer sizes closer to a few hundred KB for fast mobile loads.

Details:Facebook image sizes·OG image size guide·LinkedIn Post Inspector.

Stuck preview

Why Facebook shows the wrong image or old preview

  • Cache. Facebook keeps a scraped copy of your tags. Editing a post does not refresh it. After the live page is correct, openSharing Debuggerand use Scrape Again.
  • Image too small. Files under ~600×315 often render poorly. Rebuild at 1200×630.
  • Image not public. Hotlink protection, signed URLs, or a 403 to bots looks like a missing image in Facebook.
  • Redirects. Long chains or a final URL that differs from the one you scraped can leave the feed on an older card.
  • robots.txt. If Meta’s crawler is blocked, Debugger cannot read the page you think you fixed.
  • Missing og tags. Relative og:image paths and tags injected only after JS are common failures.
  • Same image URL after a change. Updating pixels at an unchanged path often keeps the cached file. Prefer a new path, then scrape again.

No Facebook login

Preview your Facebook link now

Paste the public URL into the Link Preview Checker. Confirm title, description and image, then use official Sharing Debugger → Scrape Again if the feed is still stale.

Preview your Facebook link nowOpen Sharing Debugger

Before you share

Checklist before you share

  • Canonical https URL opens without login.
  • og:title, og:description, og:image, og:url and og:type appear in View Source.
  • og:image is an absolute https URL returning 200 anonymously.
  • Image is about 1200×630 (1.91:1), under 8 MB (aim under 1 MB).
  • Important text sits inside a safe margin — Facebook crops edges.
  • If artwork changed, use a new image path so the cache cannot reuse the old file.
  • Run this site’s Link Preview Checker, then Scrape Again in official Sharing Debugger.

Troubleshoot

Common problems and fixes

Scroll sideways on small screens. Start with cache and absolute URLs — they cause most “wrong image” reports.

Common Facebook link preview problems, causes and fixes
Common problemCauseFix
Old image still showsFacebook cached an earlier scrape of the same URL.Fix live tags, prefer a new image path, then Scrape Again in Sharing Debugger.
Small or soft cardImage under 600×315, or far from 1.91:1.Use at least 1200×630 and set og:image:width / height.
No image at allMissing og:image, relative path, or file blocked to anonymous GET.Absolute https URL that returns 200 in a private window.
Wrong title or descriptionTags only injected by client JS, or a different URL was scraped.Put tags in the first HTML response; scrape the canonical https URL.
Debugger cannot fetch the pagerobots.txt blocks facebookexternalhit, auth wall, or redirect loop.Allow Meta’s crawler, remove login gates on the public URL, shorten redirects.

Next steps

Related tools and guides

Frequently asked questions

Answers about Facebook cache, Scrape Again, og:image size, and how this independent checker fits in.

How do I clear Facebook cache for a link?

Update the live page first with absolute Open Graph tags (prefer a new og:image path when artwork changes). Open Meta’s Sharing Debugger, paste the canonical https URL, and click Scrape Again. Share in a new post if the feed still shows the old card.

Why is my og:image not showing on Facebook?

Common causes are a missing tag, a relative image URL, a file that returns an error to bots, tags that only exist after JavaScript, or an old cache. Confirm View Source, test the image URL anonymously, then scrape again.

Is the Facebook Sharing Debugger free?

Yes. Meta’s official Sharing Debugger is free. You need a Facebook account to use it. This site’s checker is also free and does not require a Facebook login.

What size should a Facebook Open Graph image be?

Use 1200×630 pixels (about 1.91:1). Meta documents a 200×200 absolute minimum and recommends at least 1200×630 for large link cards. Keep the file under 8 MB; smaller files load faster.

Why does Facebook show the wrong or old preview?

Facebook caches scrapes. Changing pixels at the same image URL often leaves the old card in place. Fix the HTML, change the image path when possible, then use Sharing Debugger → Scrape Again.

Is SocialImageKit affiliated with Meta or Facebook?

No. SocialImageKit is an independent site. We are not affiliated with, endorsed by, or sponsored by Meta or Facebook. Use official Sharing Debugger when you need Meta’s own cache refresh.