Open Graph Checker: Free Online OG Tag Tester

An open graph checker shows which Open Graph tags a web page declares and how its link will look when someone shares it. Enter a URL in this free tool and you get the full tag list, a social preview, Twitter Card tags and a seven-point checklist, so you can fix a missing title, image or description before you post.

What Are Open Graph Tags and Why Do They Matter?

Open Graph tags are meta elements in a page's head that tell social platforms which title, description and image to show when the link is shared. Facebook created the Open Graph protocol, and LinkedIn, WhatsApp and many messaging apps read the same tags.

Each tag is a meta element whose property starts with og:. The checklist covers seven of them: og:title, og:description, og:image, og:url, og:type, og:site_name and og:locale. Any other og: tag on the page, such as an image width or an article author, still appears in the tag table.

Is Open Graph an SEO factor? It is not a direct Google ranking factor. Its value is indirect: a sharp title and a clear image make a shared link look trustworthy, which earns more clicks, and more visits and mentions help your content get discovered.

How Do You Check Open Graph Tags With This Tool?

You check Open Graph tags by entering a page address and reading the report that comes back. The whole process takes a few seconds.

1. Type or paste the page address into the URL field (the placeholder shows example.com). If you leave off the protocol, the tool adds one for you, but a full https:// address is the safest choice.
2. Press the submit button. While the page is being read, the button changes to "Analyzing...".
3. Read the status banner at the top. It says either "Open Graph Tags Detected" or "No Open Graph Tags Found" and shows counts for OG tags and Twitter tags, plus the OG type.
4. Look at the Social Preview and the "Preview sources" line to see which tags built the card.
5. Scan the Open Graph Tags table (Tag Name and Value) and the Twitter Card Tags table.
6. Work through the Validation Checklist, fix anything marked red, then choose "Try New URL" to test another page or recheck the same one.

Worked Example: Checking a Blog Post

Say you publish a post at https://example.com/running-shoe-mistakes and the page declares four tags: an og:title of "10 Running Shoe Mistakes to Avoid", an og:description of 142 characters, an og:image and an og:type of article.

The banner reads "Open Graph Tags Detected" with "4 tags found. Type: Article". The Twitter count is 0, so that section explains that Twitter will use the Open Graph tags as a fallback. The preview shows your image, the host name, the title and the description, and the "Preview sources" line lists og:title, og:description and og:image.

The checklist then gives four green items. It also gives three red ones: og:url, og:site_name and og:locale are missing. The post will share fine, but you should add og:url (set to the canonical address), plus the site name and locale. The fix takes one edit to your page template.

How Do You Read the Results?

Reading the report means checking three things in order: the status summary, the preview and the checklist. Each one answers a different question.

The Status Banner and Counts

The banner tells you whether any og: tags exist at all. A count of zero means platforms must guess from your page title and meta description. A count of 4 to 8 is typical for a healthy page, since most sites declare the core seven plus an image size or two.

The Social Preview

The preview uses your Open Graph values first. When og:title or og:description is missing, it falls back to the page's title tag or meta description, and the "Preview sources" line labels those as fallbacks. If the image area shows a gray placeholder icon, the og:image address did not load, so check that it is public, absolute and served over https.

The Validation Checklist

Each checklist row turns green when the tag is present and red when it is not. The og:description row also shows the character count, which helps you spot a description that is far too short or too long. Use these widely used guidelines as a starting point:

The og:site_name and og:locale rows are lower priority. Without them, platforms show no site name and assume en_US. If your site serves several languages, pair og:locale with your hreflang tags so both signals agree.

Who Should Use an Open Graph Checker?

Anyone who shares links and cares how they look benefits from a quick tag check. These are the most common situations:

• Bloggers and publishers test a post right after publishing, before it goes to social feeds or a newsletter.
• Developers confirm that a template change did not remove tags from every page.
• Social media managers find out why a link shows the wrong image or no image on Facebook, LinkedIn or WhatsApp.
• Agencies and consultants audit client pages and attach the checklist to a report.
• Store owners verify that product pages share a product photo instead of a logo.

Best Practices, Common Mistakes and Troubleshooting

Most Open Graph problems come from a handful of repeat mistakes, and each has a simple fix.

Use Absolute Image Addresses

An og:image value such as /images/cover.jpg often fails because platforms need the full address. Use https://example.com/images/cover.jpg instead, and use a landscape image around 1200x630 pixels (a 1.91:1 ratio), which is the size most platforms display without awkward cropping.

Keep og:url Consistent

Your og:url should match the page's canonical address. If the two disagree, shares can get split between versions of the same page. Run the page through the canonical tag checker to compare them.

Write for the Card, Not Only for Google

The Open Graph title and description can differ from your search snippet. A search title may be keyword-led, while a social title can be more conversational. Compare both with the Google SERP snippet preview to see how each version reads in its own setting.

The Report Says No Tags, but You Added Them

Check these causes in order: the tags sit in the body instead of the head, the page redirects to a login or consent screen, or a script adds the tags only after the page loads. Social platforms read the HTML your page sends first, so tags added later by scripts may be missed. Move them into the page's original HTML.

The Preview Is Right Here but Wrong on Social Media

Platforms store a copy of each link preview. After you fix your tags, use the platform's own refresh or debugging option to clear the old copy, or post the link with a small change such as a harmless query string.

Starting From Scratch

If the checklist shows most items in red, build a clean set with the Open Graph generator, paste it into your page head and test again.

What Are the Limits of This Check?

The checker reports what your page declares, and it has some boundaries you should know about. It confirms that og:image is present and tries to show it, but it does not measure the image's pixel size or file weight, so check those yourself. The checklist tests presence only, apart from showing the description length, so it will not flag a title that is too long.

The page must be publicly reachable. A site running on your own computer (localhost) or behind a password cannot be tested, so use a public staging address instead. The preview is also an approximation: Facebook, LinkedIn and WhatsApp each crop and truncate in their own way.

Twitter Card tags appear in their own table for cross-reference. If a site declares them in an unusual way they may not be listed, even though Twitter falls back to Open Graph values when its own tags are absent.

Open Graph tags are small, but they decide how every shared link looks. Enter your page address in the checker above, fix the red items, and browse the on-page SEO and meta tag tools for your next improvement.