Sioyek vs Firefox PDF Viewer (PDF.js)

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

Sioyek is a Office & Productivity solution with tags like opensource, academic, annotations, highlights, sticky-notes.

It boasts features such as Dual page view, Sticky notes, Annotations, Highlights, Fullscreen reading mode, Dark mode, Supports PDF, DjVu, XPS, CBZ & CBR files and pros including Open source, Customizable interface, Good for academic/research reading, Lightweight and fast, Available on Windows, Linux and Mac.

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.

To help you make an informed decision, we've compiled a comprehensive comparison of these two products, delving into their features, pros, cons, pricing, and more. Get ready to explore the nuances that set them apart and determine which one is the perfect fit for your requirements.

Sioyek

Sioyek

Sioyek is an open-source PDF viewer designed for reading scientific papers and academic journals. It provides advanced PDF features like synchronized dual-page view, sticky notes, highlights and annotations. Sioyek aims to offer a clutter-free interface for focused reading.

Categories:
opensource academic annotations highlights sticky-notes

Sioyek Features

  1. Dual page view
  2. Sticky notes
  3. Annotations
  4. Highlights
  5. Fullscreen reading mode
  6. Dark mode
  7. Supports PDF, DjVu, XPS, CBZ & CBR files

Pricing

  • Open Source

Pros

Open source

Customizable interface

Good for academic/research reading

Lightweight and fast

Available on Windows, Linux and Mac

Cons

Limited features compared to paid options

Lacks OCR capabilities

No mobile apps

Less intuitive than mainstream PDF readers


Firefox PDF Viewer (PDF.js)

Firefox PDF Viewer (PDF.js)

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.

Categories:
open-source pdf viewer firefox browser-plugin

Firefox PDF Viewer (PDF.js) Features

  1. In-browser PDF viewer
  2. No browser plugins required
  3. Fast page rendering
  4. Text search
  5. Page zoom
  6. Printing
  7. Document outline
  8. Annotations

Pricing

  • Open Source
  • Free

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