pdfmake

pdfmake is an open-source JavaScript library for programmatically generating PDF documents from a declarative document-definition object. It is commonly used in web applications and Node.js services that need to create invoices, reports, labels, or other structured PDFs without relying on desktop authoring tools.

Developers use pdfmake when they want PDF output driven by code and JSON-like layout definitions rather than HTML rendering. A distinguishing trait is its document-definition API, which supports tables, columns, styles, headers, footers, and embedded fonts in a consistent way across browser and server-side JavaScript environments.