A built-in PDF viewer component based on JavaScript and HTML5 Web technologies has been added to the beta version of Firefox 19, Mozilla said Friday.

Instead, the aim is to build a PDF reader in HTML5 and JavaScript. The group will start by making a Firefox extension available to interested users that enables inline PDF rendering using pdf.js.

Currently, browsers rely on plug-ins to display PDF files, like Adobe Reader or Foxit Reader. This may soon change, as there is a Firefox project in the works to build a PDF reader in HTML5 and ...

If you want to disable JavaScript from running in Mozilla Firefox, then you need to change this hidden setting. JavaScript can be a security risk!