Okular vs Firefox PDF Viewer (PDF.js)

Struggling to choose between Okular and Firefox PDF Viewer (PDF.js)? Both products offer unique advantages, making it a tough decision.

Okular is a Office & Productivity solution with tags like pdf, epub, odt, annotating, highlighting, commenting, form-filling.

It boasts features such as Supports viewing PDF, PostScript, DjVu, CHM, XPS, ePub and other formats, Allows annotating, highlighting and adding comments to PDFs, Has different view modes like single page, facing, overview grid, Supports tabs for opening multiple documents, Has presentation mode for slideshows, Can fill interactive PDF forms, Allows saving filled forms as PDF or text, Has search functionality to find text in documents, Can encrypt PDF files, Has document information and metadata viewer, Supports table of contents navigation, Has different reflow modes for reading ePubs, Can print documents to system printer and pros including Free and open source, Clean and intuitive interface, Good performance with large PDFs, Lots of annotation and markup tools, Supports many document formats, Available on Linux, Windows, macOS.

On the other hand, Firefox PDF Viewer (PDF.js) is a Web Browsers product tagged with open-source, pdf, viewer, firefox, browser-plugin.

Its standout features include In-browser PDF viewer, No browser plugins required, Fast page rendering, Text search, Page zoom, Printing, Document outline, Annotations, and it shines with pros like Lightweight, Open source, Secure, Fast load times, Works offline, Consistent experience across devices.

Feature	Okular	Firefox PDF Viewer (PDF.js)
Overall Score	N/A	N/A
Primary Category	Office & Productivity	Web Browsers

Product Overview

Okular

Description: Okular is a versatile document viewer software for KDE. It supports viewing PDFs, EPUBs, ODT, and other document formats. Okular allows annotating, highlighting, commenting on documents as well as filling forms.

Firefox PDF Viewer (PDF.js)

Description: Firefox PDF Viewer (PDF.js) is an open source PDF viewer that is built into Firefox. It allows you to view PDFs directly in the browser without needing an external plugin.

Key Features Comparison

Okular Features

• Supports viewing PDF, PostScript, DjVu, CHM, XPS, ePub and other formats
• Allows annotating, highlighting and adding comments to PDFs
• Has different view modes like single page, facing, overview grid
• Supports tabs for opening multiple documents
• Has presentation mode for slideshows
• Can fill interactive PDF forms
• Allows saving filled forms as PDF or text
• Has search functionality to find text in documents
• Can encrypt PDF files
• Has document information and metadata viewer
• Supports table of contents navigation
• Has different reflow modes for reading ePubs
• Can print documents to system printer

Firefox PDF Viewer (PDF.js) Features

• In-browser PDF viewer
• No browser plugins required
• Fast page rendering
• Text search
• Page zoom
• Printing
• Document outline
• Annotations

Pros & Cons Analysis

Okular

Pros

• Free and open source
• Clean and intuitive interface
• Good performance with large PDFs
• Lots of annotation and markup tools
• Supports many document formats
• Available on Linux, Windows, macOS

Cons

• Limited format support compared to some alternatives
• Annotation features may be limited for some users
• No cloud storage integration
• Less features than paid alternatives

Firefox PDF Viewer (PDF.js)

Pros

• Lightweight
• Open source
• Secure
• Fast load times
• Works offline
• Consistent experience across devices

Cons

• Limited annotation features
• Lacks some advanced PDF features like form filling
• Printing can be unreliable
• Not as full-featured as standalone PDF apps

Pricing Comparison

Okular

• Open Source

Firefox PDF Viewer (PDF.js)

• Open Source
• Free