I am looking for a PHP/JS library with that would allow my users to:
- view a PDF file
- mark text (selecting)
- mark document fragments (let's say, with a semi-transparent rectangle or circle)
- add annotations (or comments) to the marked fragments
- reply to annotations (or comments)
- save (generate) the modified PDF
What I have
My web application is running on LAMP (PHP 5.3.3). Currently, I am using PDF.js as the PDFs viewer.
Open source solution that I can implement myself would be perfect. However, I would also consider premium software.
What I'm aware of
Do you know any software or library that would help me achieve my goal? Do you know any alternative solution? Maybe there's a way to put all I need together using a PHP-HTML5-JS combo in some way?