Articles pages: (The articles are just for graphic editing software engineer to accumulate knowledge to design better software for the end customers. They are not well-organized.)
Related knowledge of photo editing software:
PDF Page Joiner Splitter Cutter 1.0.1.3
JPG BMP TIFF GIF Image to PDF Conversion description
Convert multi-page TIFF to PDF/A-1a
Batch converting TIFF to PDF on the fly
Photo to PDF Converter-PhotoPDF
Quick and Easy Conversion-PhotoPDF
OakDoc PS to PDF Converter v2.0
The problem of converting images to pdf
Image2PDF VS PDF Creation of ACDSee
Photoshop-like Web-based image editor
Sagelight 48-bit Image Editor v3.0.1