ChatDOC transforms how users interact with documents by enabling natural language conversations with PDFs and other file formats. The platform accurately extracts and analyzes content from various document types including standard PDFs, Word documents, scanned files, websites, EPUB, Markdown, and text files. Each response includes clickable citations that link back to the original source material, ensuring transparency and enabling users to verify AI-generated answers.

The platform excels at handling complex document elements such as formulas, cross-page tables, and scanned content through OCR technology. Users can select specific text passages or tables within documents to ask targeted questions, receiving more precise answers focused on the selected content. ChatDOC supports multi-document collections, allowing users to upload folders of files and query across multiple documents simultaneously to compare information and uncover insights.

ChatDOC offers flexible document organization through collections, enabling users to create customized knowledge bases for different projects or topics. The platform supports up to 300,000 tokens per file for comprehensive document analysis. Formula recognition capabilities allow users to analyze and interpret mathematical expressions and equations within documents. The service integrates GPT-4o support as an optional paid add-on for enhanced AI responses.