We just released the new version 2.9 of Sejda where you can find many fixes and the new PDF scale task.
Try online web app
An extendible and configurable PDF manipulation layer.
A ready to use java library to perform PDF document manipulation without having to deal with the low level API.
Command line shell interface available as a separate module, running on all platforms
Get the source code:
Quick example sample code (sejda-example module):
Browse the API JavaDoc:
Submit bugs or propose improvements on the issue tracker.
To get help on a specific question or problem please use Stack Overflow with tag [sejda]. We monitor these questions.
JetBrains for generously supporting us with an OSS license. Two thumbs up!