Firefox PDF Viewer (PDF.js) vs Thorium Reader

A side-by-side look at Firefox PDF Viewer (PDF.js) and Thorium Reader. For an in-depth review of either product, follow the links below.

Firefox PDF Viewer (PDF.js)

Web Browsers

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.

open-sourcepdfviewerfirefoxbrowser-plugin

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Thorium Reader

News & Books

Thorium Reader is an open-source RSS reader and news aggregator. It allows you to subscribe to RSS feeds and read articles from various websites and news sources in one place. Features include automatic feed updates, offline reading support, article search and tagging, dark mode, and cross-platform sync.

rssnewsreaderaggregatorofflineopensource

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