A revolutionary privacy-first architecture that executes military-grade PDF algorithms directly in your browser.
Select from 34 specialized tools across Organize, Optimize, Convert, Edit, Security, and AI Intelligence.
Select or drag your PDF documents into the workspace. Your files are loaded into memory on your device.
PDF manipulations run in WebAssembly and Web Workers. Download as standalone PDFs, ZIP, or direct to local folder.
How our intelligent algorithm parses educational textbooks and divides them into modular units.
Drag in your full multi-chapter or multi-unit PDF book.
Our engine extracts text baselines and Table of Contents.
Identifies Unit 1, Unit 2, Chapter 3, and front matter ranges.
Inspect confidence scores, adjust page boundaries, or add unlimited parts.
Apply custom naming patterns with automatic filesystem character sanitization.
Extracts exact vector pages without rasterization or degradation.
Export as organized individual files, a single ZIP, or save to your folder.
Traditional online PDF splitters require uploading gigabytes of sensitive student textbooks, confidential financial records, or medical scans to unknown servers. DocuNexa operates entirely in your browser using modern WebAssembly and JavaScript — your files never touch the internet.