PDFKit

PDFKit is an open-source JavaScript library for programmatically generating PDF documents. It is commonly used in Node.js applications and can also run in the browser with the right bundling setup. Developers use it to create invoices, reports, labels, and other PDFs directly from code.

The library provides low-level drawing and text layout APIs rather than a visual editor. It supports text, vector graphics, images, links, annotations, and page management, making it suitable for custom document workflows. A distinguishing trait is its stream-based design in Node.js, which fits server-side generation pipelines and dynamic PDF output.