Why isn't my share on Facebook / LinkedIn updating to reflect recent changes to the Flipbook?
If you have shared a Flipbook on Facebook, Facebook will cache (save) it's appearance for quite a long time.
This can mean that any changes you make to your Flipbook might not be reflected in the Facebook post.
Changes such as Open Graph, PDF updates / changes etc.
Fortunately, there is a tool that can force Facebook to scrape (download) new information about your Flipbook.
Click to access Facebook's debug tool.
Unfortunately, LinkedIn keeps the cached data for a long time from the first time the link is previewed and does not offer a "debug tool".
The only way to “clear” the sharing preview cache is to trick LinkedIn into thinking it has never seen your flipbook before.
You can do this by adding a variable to your flipbook link when you share it on LinkedIn.
Original link: http://demo.ipaper.io/showcase/
"New" link: http://demo.ipaper.io/showcase/?page=1
"?page=1" was added at the end of the site's URL. It will force the metadata to be recollected. Don't worry, it won't affect your webpage.