ThreadPDF for Gmail is a Chrome extension that enables bulk downloading and exporting of PDF attachments from Gmail. It supports advanced search filters (by sender, date range, labels, or keywords), bulk downloading of hundreds of PDFs in a single operation, and customizable file naming conventions with organized folder structures. All processing happens locally in the browser for complete privacy — no data is stored or transmitted to external servers. Key features include: smart search and filtering for targeted email selection, bulk download of hundreds of attachments at once, optimized download engine for fast processing, organized export with customizable naming, and a simple one-click interface that works directly inside Gmail. ThreadPDF is used by legal professionals for document collection, accountants for bulk invoice downloads, researchers for academic PDF gathering, and operations teams for contract archiving. Free tier includes 50 PDFs/month, with premium plans starting at $4.99/month for unlimited downloads, advanced filters, priority speed, and batch scheduling.