PDF.js Library (Legacy `pdfjs-lib` package)

PDF.js is a Portable Document Format (PDF) library built with HTML5, aiming to create a general-purpose, web standards-based platform for parsing and rendering PDFs. The package `pdfjs-lib` with version `0.0.149` (as provided) refers to a very old and effectively abandoned build of the PDF.js library. Its last known publish was over three years ago. The actively maintained and widely used package for consuming Mozilla's PDF.js library is `pdfjs-dist`. The current stable version of `pdfjs-dist` is around `5.6.205`, with a healthy and positive release cadence, often seeing multiple new versions within a few months, and continuous community interaction. Key differentiators include its robust HTML5-based rendering capabilities, cross-browser compatibility, and its role as the underlying technology for Firefox's built-in PDF viewer. It supports rendering PDFs onto HTML5 `<canvas>` elements, including a selectable text layer for search and copy-paste. While `pdfjs-lib` (0.0.149) may still exist on npm, it should be considered deprecated and developers are strongly advised to use `pdfjs-dist` for any new or existing projects.