Quote:
Originally Posted by bogdaniosif
The PDF spec is open and anyone can create programs that do anything with PDF files, without paying anything to Adobe.
In your situation, you were using an SDK from Adobe, which is very very different from writing an app from zero with the purpose of viewing or editing PDF files. This is why Adobe were able to charge anything they wanted for any action you did with the help of their SDK. Writing code from scratch to handle PDFs is a much more difficult and laborious task compared with using an SDK to accomplish the same thing.
As an example of a very affordable app that is capable to handle PDF files with annotations I can direct you to the excellent GoodReader for iPad. It can handle all kinds of PDF annotations and it costs 3$.
|
Can you recommend any PDF viewers that can do annotations and that run under a Linux ARM busybox system? I remember my head spinning just looking at the SDK annotation documentation, and I'm not surprized that most open source PDF software have not implemented it natively, even if it is in the spec. Even some of the closed-source products add annotations to external files and aren't portable to other viewers. It's clear to me that annotations have been made deliberately hard to implement to protect Adobe's revenue stream.
If anyone knows better, I don't want them arguing with me; I want them to tell PB how to incorporate annotations on their readers if it can be done cheaply.