PDF generation is one of those tasks that sounds straightforward until you are three hours deep in classpath dependency conflicts and trying to figure out why your invoice looks different on every server.

This article is a factual overview of the most widely used Java PDF libraries in 2026. It covers what to look for when evaluating a library, how the major options compare, and when each one is the right tool for the job.

iText is one of the most established PDF libraries in the Java ecosystem. It is also one of the most commonly searched for alternatives.

The reasons teams look for a replacement are predictable: a licensing model change that blocks commercial use, a dependency footprint that conflicts with a microservice architecture, or simply the need for a library that better fits a specific use case. This article covers the available options, what each one is suited for, and how to choose.

Java backend teams usually evaluate PDF tools on API simplicity, deployment footprint, licensing, and testability.