Firefox PDF Viewer (PDF.js) vs MuPDF

A side-by-side look at Firefox PDF Viewer (PDF.js) and MuPDF. 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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MuPDF

Office & Productivity

MuPDF is a free, open source PDF viewer and toolkit. It is lightweight, fast, and cross-platform, supporting Windows, macOS, Linux, Android, and iOS. MuPDF allows you to view PDFs quickly and smoothly while using minimal system resources.

pdfvieweropensourcecrossplatformlightweight

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