Side by side

Foxit PDF Reader vs Mozilla PDF.js

Both stand on pdf readers. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Foxit PDF Reader

Free plan AndroidiPhoneMac+2

Foxit PDF Reader covers core PDF tasks, including forms, signatures, and collaboration, with offline desktop access. Consider the listed macOS range and lack of OCR if those matter to your workflow.

Visit Foxit PDF Reader

PDF.js offers a free, open-source foundation for PDF rendering, with both an API and an adaptable viewer. Developers should account for browser differences, the lack of OCR and the default cross-origin restriction.

Visit Mozilla PDF.js

The facts

	Foxit PDF Reader	Mozilla PDF.js
Free plan	Yes	Yes
Open source	Not published	Not published
Runs on	Android, iPhone, Mac, Web, Windows	API, Extension, Linux, Self-hosted, Web
Lowest paid plan	Free or on request	Free or on request
Plans published	3	1
Maker	Not published	Not published
Website	foxit.com	mozilla.github.io
On pdf readers	#2 of 24	#6 of 24

Foxit PDF Reader: what it does well

Free PDF reading, annotation, form filling, and signing
Supports both Acroforms and XFA forms
Shared reviews and document feedback tools
Desktop offline use is available
Apps and web access across listed platforms

What to know first

OCR support is listed as none
macOS support is stated through version 14
PDF Editor trial lasts 14 days

Mozilla PDF.js: what it does well

Provides an API for rendering PDFs and retrieving document information
Viewer layer can be adapted for a custom interface
Supports form filling and some annotation types
Prebuilt builds and CDN-hosted copies are available

What to know first

Does not provide OCR support
Cross-origin requests are blocked by default
PDF feature support varies by browser and version
Some local use requires a web server

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