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Blogger & Facebook OG object debugger

Facebook or any network that gets your URL and displays preview, actually scrapes the URL through a system developed by Facebook called the open graph.

They might look something like this in the page's source,

<meta content='' property='og:url'/>
<meta content='Blogger & Facebook OG object debugger' property='og:title'/>
<meta content='My Facebook preview shows incorrect information. How to fix?' property='og:description'/>

Therefore, while sharing a link for the first time on facebook, the object debugger stores meta information like these in its cache so when you share again, instead of scraping the URL, it takes from its own cache. After a while, when the cache expires, it scrapes again. So a shared URL even upon changing the description/image/title, does not get affected immediately.

It doesn't mean, there's no other way other than to wait. To overcome this and see quicker results of custom description/ changing image/ changing blog or post title, Facebook has a facility called the Open Graph Object Debugger. 

How to use OG Object Debugger?
  1. Go to the Open Graph Object Debugger,
  2. In the input URL box, provide your blog post URL
  3. Click on Debug.
  4. If the URL was never shared to facebook, it will ask to Fetch new information.

  5. If the URL is already shared, it will show all the scraped details. If they are incorrect, please click on Scrape again.

  6. When this is done, try sharing the post on your Facebook News feed.
This time you should get the proper and newly scrapped information. 


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