Image watermarking injects graphic brand assets, corporate crests, official security stamps, and approval badges into PDF page containers. The engine decodes 32-bit RGBA bitstreams, preserving 8-bit alpha transparency channels so that transparent logo backgrounds composite seamlessly over multi-column text and vector charts. Geometric scaling algorithms allow positioning logo watermarks in nine standard anchor coordinates (Top-Left, Center, Bottom-Right, etc.) with configurable proportional bounding constraints. This ensures that logos maintain exact brand aspect ratios without stretching across different page sizes such as US Letter, A4, and A3 Ledger. Image watermarking is standard practice for creative design agencies, architectural blueprint distribution, official government certificates, and commercial invoice branding.