What is an Open Graph checker?
When someone pastes your link into Facebook, LinkedIn, Slack or a chat app, the platform looks for Open Graph tags in the page head. Those tags decide the title, description and image in the preview card. Get them wrong and the link looks bare or shows the wrong picture.
This open graph checker works from the values you enter, not from a URL fetch. Fill in og:title (required), og:description, og:image URL, og:url, og:site_name, og:type and the twitter:card type, then click Preview Social Share. You get a validation list, two mock previews and a block of generated HTML tags with a copy button.
Keep the limits in mind. The previews are approximations drawn by this page, so real platforms may crop or style cards differently. The tool does not see what your live site currently outputs, and it cannot clear a platform's cache. Use it to draft and sanity-check tags before you publish, then confirm with each platform's own debugger.
How to preview your Open Graph tags
- Enter a title in og:title. It is the only required field.
- Add og:description, and the full address of your picture in og:image URL.
- Paste the page address into og:url / Page URL and add your name in og:site_name if you want it included.
- Choose an og:type (website, article or product) and a twitter:card type (summary_large_image or summary).
- Click Preview Social Share and read the validation list for missing items and length warnings.
- Check the Facebook / LinkedIn and Twitter / X previews, then click Copy Tags and paste the HTML into your page head.
What this tool shows
Validation list
Each tag gets a status line: title and description length, whether the image, URL and site name are set, and the Twitter card type.
Facebook and LinkedIn style preview
A card shows the domain in capitals, the title, the description and your image cropped to a wide frame.
Twitter / X style preview
A second card shows the title, description and domain. It shows an image only if you supplied one.
Image load test
Your browser tries to load the image URL, and the card shows an Image failed to load message if it cannot.
Generated tags
The tool writes Open Graph and Twitter Card meta tags from your inputs, including 1200 by 630 image size tags.
Card type choice
Switch between summary_large_image and summary to see which value you want in the output.
Who uses it, and for what
- Bloggers publishing a new post. Draft the share title and image, check the preview and copy the tags into a custom theme before announcing the post.
- E-commerce owners. Set og:type to product and check how a product page title and photo will look in a chat link.
- Designers delivering a social image. Paste the image URL on a staging server and see whether it loads and fits the card frame.
- Marketers writing share copy. Test a long title against the 70-character warning, then build the complete tag set with the Open Graph Generator or Meta Tag Generator.
Tips for better share previews
- Use a public image URL, ideally 1200 by 630 pixels. A file behind a login will not load for platform crawlers.
- Enter a full address including https:// in the URL field. An invalid address can stop the preview from rendering.
- The tool warns above 70 characters for the title and 200 for the description. Shorter text is safer because platforms trim at different lengths.
- Quotes inside your title or description are not escaped in the copied tags. Replace double quotes before pasting.
- After publishing, clear the platform's cache with its own debugging tool, because old previews can stick around.
- Check the Twitter Card Generator if you need more card options than the two offered here.
Is it safe? Privacy and limits
The checker runs in your browser and does not send your text anywhere. One exception: if you enter an image URL, your browser requests that image directly from its server to draw the preview, which that server can see. Nothing is stored by this tool. It does not fetch your page, so it cannot confirm what your live site currently serves.
Open Graph checker FAQ
It is a tool that shows how your page's Open Graph tags will look when a link is shared. Open Graph is a set of meta tags, started by Facebook, that give platforms a title, description and image for a link card. This checker lets you type those values and see a preview and a list of warnings. It helps you catch problems like a missing image before you publish a page.
No. It never visits your URL. You enter the title, description, image and other values by hand, and it renders a preview from them. That means it cannot tell you what tags your site currently outputs. To audit a live page, view its source or use a platform's own debugger. This tool is best for drafting tags and checking them against basic length and completeness rules before you add them.
A 1200 by 630 pixel image, with a 1.91 to 1 ratio, works well on most platforms and is what the generated tags declare. Use a JPG or PNG hosted at a public URL. Keep key text away from the edges, because some apps crop. The preview here crops images into a wide frame, which gives a rough idea but not an exact match to each platform's layout.
Your browser could not fetch the image from the URL you entered. Common causes are a typo, a file that is private or behind a login, a blocked hotlink setting on the host, or a link that returns a page instead of an image. Open the URL in a new tab to confirm it displays. If it works there but not here, the host may block embedding from other sites, which can also affect platform crawlers.
The preview here is a simplified drawing, not Facebook's own renderer. Real platforms apply their own fonts, crop rules and text limits, and they cache earlier results. If a live share shows an old image, run the URL through the Facebook Sharing Debugger and scrape it again. LinkedIn and X have similar tools. Treat this checker as a first pass for content and completeness.
The og:type tag describes the kind of object a page represents. This tool offers website, article and product. Use website for home and general pages, article for blog posts and news, and product for product pages. Platforms use the value mainly for categorisation, and some add type-specific tags, such as published time for articles. Choosing the right one is minor, but it is part of a complete tag set.
X looks for its own twitter: tags first and falls back to Open Graph tags when they are missing. This tool outputs both. The twitter:card option controls the layout: summary_large_image shows a large picture above the text, while summary shows a small square image. If you set only og tags, you will usually still get a card, but declaring twitter:card makes the choice explicit.
Yes. It is free, needs no account and has no usage limit. Everything except the image request runs in your browser. If you want to build a full tag set for the head of a page, the Meta Tag Generator covers title, description and canonical as well. Always test the final page after publishing, because a preview built from typed values cannot reveal a typo in your template.