PDF Seal

介紹

PDF Seal is a free, open-source PDF workspace. Manage signature fields, inspect document metadata, browse and compare revision history, and share PDFs securely — all in your browser, with nothing stored on a server.

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README

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pdf-seal is a browser-based PDF signature field editor built with Node.js, Express, TypeScript, and pdf-lib. It helps you upload a PDF, place signature fields directly on the document, adjust their size and position, and save the updated file. The app opens as a web workspace with two main areas: • A document viewer on the left where you can preview the PDF, move between pages, and zoom in or out. • A control panel on the right where you can add and edit signature fields.