PDFObject: PDF Embedding Utility

PDFObject is a lightweight JavaScript utility designed for embedding PDF documents directly into HTML pages. Currently at version 2.3.1, it provides a robust solution for displaying PDFs inline across various browsers. The project maintains a steady release cadence, with significant updates (like 2.3) introducing major architectural changes approximately annually, alongside minor patches for fixes and enhancements. A key differentiator is its shift to a pure `<iframe>` approach in v2.3, abandoning the less consistent `<embed>` element, which enhances cross-browser compatibility and reliability. It also intelligently leverages `navigator.pdfViewerEnabled` to determine native PDF viewing capabilities and automatically falls back to download options on unsupported platforms, especially mobile devices. This makes it a pragmatic choice for integrating PDF content without external plugins.