PDF Viewer (aka pdf.js) is a new revolutionary extension using web standard technologies that allows you to display within Mozilla Firefox almost all PDF files found on the web without a plugin.
Cost / License
- Free
- Open Source (Apache-2.0)
Application type
Platforms
- Google Chrome
- Opera
- Mozilla Firefox


Firefox PDF Viewer (PDF.js) vs Adobe Acrobat Reader Comments
pdf.js cannot be used to annotate documents or fill forms.
pdf.js now supports annotating and filling forms.
- Firefox PDF Viewer (PDF.js) is Free and Open Source
- Firefox PDF Viewer (PDF.js) is Privacy focused







































It takes dozens of seconds to open a 20MB PDF on a mid-class smartphone.