There are no limitation ! you can embed unlimited number of pdf.
PDF Poster is the best PDF embedder plugin out there. It’s Packed with huge numbers of features allowing you to achieve your goals.
Customize the PDF viewer before publishing them. There are many customizable options.
All the PDF files you published will be listed in one place and it enabled you to manage them easily.
Disable the download option to prevent users from downloading your files! Also, copy protection available.
This plugin contain 2 build-in Gutenberg blocks.