Interestingly, there are also a prototype Flash in JavaScript called Shumway: https://github.com/mozilla/shumway https://github.com/mozilla/shumway And an IIUC

Interestingly, there are also a prototype Flash in JavaScript called Shumway: https://github.com/mozilla/shumway https://github.com/mozilla/shumway And an IIUC a DOM renderer in JS https://github.com/andreasgal/dom.js/ https://github.com/andreasgal/dom.js/ I don't know if PDF.js will ever reach full PDF compatibility (with all it's weird forms and other stuff), but I do hope so. With a liberal licence I can totally see people embedding pdf.js to render their pdfs on site.