Firefox PDF Viewer (PDF.js) vs Usability Studio

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

Full review → Alternatives

Usability Studio

Office & Productivity

Usability Studio is a user research and usability testing software that allows you to conduct remote user tests to identify UX issues and get design feedback. It provides features like test participant recruitment, moderated & unmoderated testing, analytics, heatmaps, and session recordings.

user-testingux-researchremote-testinganalyticsheatmaps

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