One of the new feature-uri from Firefox 15 it is and PDF reader-ul incorporated that allows users to open .pdf files direct in browser, without the need to use Plugin Adobe PDF.

Cum activam feature-ul PDF reader in Firefox?
- open Firefox If you taste about:config In the address bar

- In the displayed warning message click on the button I’ll be carefull, I promise!

- in About: Config Search browser.preferences.inContent, then click-right on it and select Toggle from the menu

- Then to activate the PDF Reader feature, search (also in About: Config) pdfjs.disabled
- Click-right on it and select Toggle

And ready! From now on you can read PDF documents directly in Firefox, you can even use the browser to open .pdf files stored in the computer.

Notes: In order to use the PFD Reader feature in Firefox, it is necessary to deactivate the Adobe Addon. To access more advanced PDF features, you will still need Adobe PDF Plugin.
STEALTH SETTINGS – How to enable the built-in PDF reader in Firefox 15
 
			