I need to find or develop an app that will load in a pdf file from the web, allow a user to make simple annotations and save these annotations back to a webserver.
I’m curently using the zurb javascript annotator with the pdf rendered to a .jpg with imagemagick. Just now, I was told that they need the ability to zoom in to 3000% or more on some files. clearly rendering to a jpg would create gigantic files.
So I need to create either a java app or a flash app that will load the original pdf, allow the user to mark it up, and save either the annotated pdf, or the annotations themselves back to the webapp.
This also needs to live IN the web browser, launching acrobat reader, or an air app that must be downloaded and installed are not going to work here.
Alternative strategies are more than welcome.
There are many options out there (paid as well as free).
Try http://www.axmag.com/ or http://lvolume.net/
For a free implementation the best would be to go for open source projects. One of them is flexpaper.
Also if since you mentioned other options to be open too, you may try ajaxdocumentviewer or connect to Google doc viewer itself.