losLab

losLab

Devoted to developing PDF and Spreadsheet developer library, including PDF creation, PDF manipulation, PDF rendering library, and Excel Spreadsheet creation & manipulation library.

Understanding PDF File Structure: A Technical Overview

Inside PDF Files: A Complete Structural Breakdown The Portable Document Format (PDF) has become the de facto standard for document exchange and archival. Understanding its internal structure is essential for developers, system administrators, and anyone involved in document processing workflows. This…

Building a Simple PDF Document from Scratch

Building a PDF Document using Notepad: A Comprehensive Guide Master the art of creating PDF files manually and understand the underlying structure that powers digital documents Introduction: Unlocking the Mysteries of PDF Creation Have you ever wondered what happens behind…

Debugging Range Check Errors in Delphi PDF Libraries

When working with PDF manipulation libraries in Delphi, range check errors can be particularly frustrating because they often occur deep within complex document structures. These errors are especially challenging because they may appear intermittently, depending on the specific PDF structure…

Debugging PDF Page Order Issues: A Real Case Study

PDF manipulation can be tricky, especially when dealing with page ordering. Recently, We encountered a fascinating debugging session that revealed some important insights about PDF document structure and page indexing. This case study demonstrates how a seemingly simple “off-by-one” error…