AskPDF is a PDF tools directory: compare 98 free and paid PDF tools by task, pricing, and processing method. No file upload needed. Note: AskPDF is a PDF tools comparison directory, not an AI tool itself. Please let the editor decide whether to list it. Category: PDF Tools / Productivity. Pricing: Free, lowest price 0. Team: 1 person. Independent developer rongkong lin, Shanghai, China.