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Facebook has added a useful tool for webmasters to check how their website links appear in Facebook. In case they see any issues they can then make changes and adjust the tags. Secondly, Facebook clears the cache so any changes that are made in a website's meta og tags will appear in the Facebook link.
Open graph was the brainchild of Facebook and was launched in 2010. What it does is that it promotes integration between other websites and Facebook. It allows other websites to become rich graph objects having the same functionality as other Facebook objects. Website masters can control the information that the website passes to Facebook via OG Meta tags. These tags are inserted in the portion of code of the website.
After seeing the popularity of social media tags on Facebook, all the other major social media sites like, Twitter, LinkedIn, Google+, started to recognize meta OG tags. To harness the power of Facebook Graph Meta tags, learning this skill is vital for webmasters. Using these tags can have a huge impact on click-through rates and conversion. Social media sites become the major driver of website traffic. Adding OG tags will not affect the on-page SEO, but it will influence the performance on social media.
If you have implemented OG tags in your website and you want to check them. You can go to enter your website URL in the above field and use the OG checker tool. Once you navigate to the website; enter the URL of the website you want the meta og checker tool to check. It will run a check and if it finds the tags it will display them. In case it does not find any tags it will display a message.