Jacob Collins

  Jacob is the JPedal Product Lead and specialises in PDF creation and manipulation. He also develops Salesforce backend systems and contributes to marketing and support. Outside of work, he’s a 1900‑rated chess player, guitarist, and French learner.

 



65 Stories by Jacob Collins

Digital Signatures in a PDF

Digital signatures are a stamp of authentication for digital information. For PDF files, they provide the ability to detect whether the document has been...
1 min read

How to search for text in a PDF file without opening it

Introduction Can you determine if a PDF is searchable for text without opening it? Well you will need some special software. This might be...
57 sec read

How to remove unused objects from PDF file (Tutorial)

PDF files sometimes contain objects which are never used. This increases the file size and is wasteful. This tutorial shows you how to reduce...
44 sec read

Glossary of PDF Terms

This article lists and defines commonly used terminology from the PDF world.   AcroForm AcroForm is a PDF form format that was introduced in...
2 min read

How to remove a page from a PDF file in Java (Tutorial)

The PDF file format is not natively supported by Java. Therefore, to remove a page from a PDF file, you will need an external...
56 sec read

How to split PDF files in Java (Tutorial)

TL;DR Goal: Split PDF files programmatically in Java (JDK 8+). Tool: Utilize the JPedal library. Process: Non-destructive splitting (into pages or chunks) using specific...
2 min read