Free Open Graph checker
An Open Graph checker that rebuilds the preview card Facebook, LinkedIn, Slack and X would show for your link — from the page's actual og: and twitter: tags. See the headline, description and image a reader sees before they click, and catch a broken tag before it costs you the click.
See the card, not just the tags
A list of meta tags tells you what is present. What you actually want to know is what a person sees when your link lands in a Slack channel or a LinkedIn feed — and that depends on how the platform combines those tags, which fallbacks it applies, and whether the image resolves. This tool reconstructs that card, so you are looking at the outcome rather than inferring it from raw markup. A headline that truncates awkwardly or an image slot that comes up empty is obvious at a glance.
The absolute-URL trap
The single most common Open Graph bug is a relative og:image path. It works when you test the page in a browser, because the browser resolves it against the current URL — and it fails on nearly every social platform, because the platform fetches the tag in isolation and has nothing to resolve a relative path against. The result is a preview that looks right in your own testing and breaks everywhere it matters. The image URL must be absolute, protocol and domain included; this tool flags the case where it is not.
One image, every platform
You do not need a different image per network. A single 1200 × 630og:image plus twitter:card set to summary_large_image covers Facebook, LinkedIn, Slack and X cleanly, because X falls back to your Open Graph tags when the Twitter-specific ones are absent. Get those two right and the link renders well nearly everywhere it is shared, from one set of tags.
Where this fits
Open Graph tags live in the same head as the tags that decide whether the page ranks at all. The meta tag checker covers the title, description, canonical and robots directives; the favicon checker confirms the small icon that shows beside your link in a tab and a search result. To see the whole page scored — social tags, metadata, speed and more — run the free website checker, and what counts as a good score explains the number it returns.
Open Graph questions
- What does an Open Graph checker do?
- An Open Graph checker fetches a page and reads its Open Graph and Twitter Card meta tags — the ones that control how a shared link looks. It then rebuilds the preview card that Facebook, LinkedIn, Slack and X would render from those tags, so you can see the headline, description and image a reader would see before they click, and catch a missing or broken tag before it costs you clicks.
- What are Open Graph tags?
- Open Graph tags are meta tags, originally introduced by Facebook, that tell social platforms how to display your link. The main ones are og:title, og:description, og:image, og:site_name and og:type. When a link is shared, the platform reads these to build a rich preview card with an image and text; without them it falls back to guessing from the page, which usually looks worse.
- What image size should I use for og:image?
- 1200 by 630 pixels is the reliable standard. It fills the large card format on Facebook, LinkedIn and Slack without cropping and gives X a clean crop for its summary_large_image card. Keep the file under about 5MB, use PNG or JPEG, and — the part that trips people up — make the URL absolute, including the domain. A relative image path works in a browser and fails on most platforms.
- Do I need Twitter Card tags if I have Open Graph tags?
- Not strictly. X will fall back to your Open Graph tags when the twitter: equivalents are missing, so a link with good og: tags still renders a reasonable card. The one Twitter-specific tag worth adding is twitter:card set to summary_large_image, which asks for the big-image layout rather than the small thumbnail. Beyond that, Open Graph tags carry most of the load across every platform.
- Why does my link show no image when shared?
- The usual causes are a missing og:image tag, a relative image URL that the platform cannot resolve, an image behind a login or blocked by robots, or a file too large to fetch. Platforms also cache aggressively, so if you fixed the tag recently the old preview can linger — most offer a debugger that forces a refresh. This tool shows whether the tag is present and absolute, which rules out the most common cause first.
- Do Open Graph tags affect SEO or rankings?
- No — they are not a ranking factor, and Google does not use them to rank pages. Their value is entirely in the click: a link that renders as a rich card with a headline and image gets noticeably more engagement than a bare gray URL, and that shared traffic and the links it can attract are worth having. Think of them as conversion optimization for the moment your link is seen, not as SEO.
- Why is my link preview not showing an image on WhatsApp?
- WhatsApp reads the og:image tag, so a missing preview usually means the tag is absent, points to a broken or oversized image, or sits behind a login or robots block. It also caches previews aggressively, so after fixing the tag the old result can persist until the cache clears or the URL changes.
- How do I refresh the link preview on Facebook?
- Facebook caches the preview it first scraped, so re-run the URL through Facebook's Sharing Debugger and use its option to fetch fresh data. That forces a re-scrape of your current Open Graph tags, which is the only reliable way to update a stale title or image on Facebook.
- What is the difference between Open Graph and Twitter Cards?
- Open Graph tags control how a link looks when shared on most platforms including Facebook, LinkedIn and WhatsApp, while Twitter Cards are X's own tag set. X falls back to Open Graph when Twitter Card tags are absent, so og tags cover most cases and twitter tags fine-tune the appearance on X.
- Where do I add Open Graph tags?
- Open Graph tags go in the <head> of the page as <meta property="og:..."> elements, one per property such as og:title, og:description, og:image and og:url. Most CMS platforms have a field or plugin that writes them for you, so you rarely edit the HTML by hand.
- Why does my link preview show the wrong title or image?
- A wrong preview almost always means the platform is showing a cached version from before your latest change, or picking up an old og tag still present in the page. Confirm the current tags with the checker above, remove any duplicates, then force a re-scrape through the platform's debugging tool.