UniPDF Go Library Documentation

UniPDF is a comprehensive PDF library for Go that supports a wide range of PDF manipulation and processing tasks, including:

• Creation & Reporting: Create PDF reports, tables, styled paragraphs, and invoices.
• Page Manipulation: Merge, split, rotate, and reorder pages; perform advanced layouts like '4-up' (4 pages on 1).
• Extraction: Extract text (with size, position, and formatting), images (with coordinates), and tabular data (PDF to CSV).
• Images: Add images to pages or convert images to PDF.
• Forms: Create, fill, flatten, and merge forms (including FDF merging).
• Security: Unlock/remove passwords from PDF files, protect files with passwords, and perform digital signing and validation.
• Optimization: Compress and optimize PDF files.
• Advanced Decoding: Supports CCITTFaxDecode and JBIG2 decoding.

For concrete implementation details, refer to the unipdf-examples repository.

UniPDF is a comprehensive PDF library for Go designed for generating, processing, and modifying PDF files. The library is organized into several major functional packages:

• common: Contains shared types like Logger and utilities for license validation.
• core: Handles primitive PDF object types, file reading I/O, and parsing of primitive objects.
• model: Provides a structured representation of PDF primitive types. It includes a reader and writer for processing PDF files at a medium-to-high level interface (requires knowledge of the PDF format).
• creator: A high-level package for creating new PDFs or modifying existing ones. It supports template loading, adding text/images, and generating graphical reports without requiring deep knowledge of the PDF specification.
• extractor: A simplified interface for quickly extracting content from PDFs, currently focused on textual content.