With a number of services being promoted to create interactive PDF experiences on websites - including Flipbooks and ISSUU - we have been getting more and more requests from BUs about embedding interactive PDF viewers that allow users to flip through the pages on our site with the same feel as flipping through a magazine or physical report.
To embed an interactive PDF viewer on nature.org we would have to place it in an open container. In almost all cases we have advised against this. Here is why we do not recommend adding an interactive PDF viewer to a webpage.
These tools do not meet accessibility requirements because the printed text cannot be read by a screen reader. It is also typically harder to manipulate the content by keyboard - and often slow to load. Accessibility Issues with ISSUU
For the user, it is just as good to read the PDF in the browser. Although some PDFs may make more sense as a horizontal spread, for example where the image goes across the fold, it would still be a better option to make a digital version of the content that feels more vertical and scales better to small devices.
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Since using a third-party PDF viewer would require an open container, we refer you back to the Open Container Guide to remind you of the reasons that Open Containers are limited and we try to use them sparingly! Open Container Guide