[jordann]

If you don't mind using java, you can use the open source Apache PDFBox library

https://pdfbox.apache.org/

It's relatively performant and it's a mature and supported codebase that can accomplish most pdf tasks.

[Drakinte]

Except text substitution

https://pdfbox.apache.org/2.0/migration.html#why-was-the-rep...

> ReplaceText example has been removed as it gave the incorrect illusion that text can be replaced easily