3-Heights™ PDF Toolbox is a fast and robust API for assembling PDF documents from various sources, creating PDF documents from scratch and modifying PDF documents. It also offers numerous features for programmatically filling, editing, extracting and flattening form fields.
4-Heights® PDF Toolbox is a fast and reliable API for processing PDF documents:
• Extraction of existing PDFs
• Creation of new PDFs from scratch
• Modification of existing PDFs
• Assembly, splitting, N-up, encryption of PDFs
• Supports page content, form fields, annotations, etc.