Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · PDF Readers

Foxit PDF Reader vs Mozilla PDF.js

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Foxit PDF Reader #1 in PDF Readers 9.4/10 Free plan Free plan✓ 4 of 4 features Visit Foxit
Mozilla PDF.js #5 in PDF Readers 8.8/10 Free plan Free plan✓ 2 of 4 features Visit Mozilla PDF.js

Foxit PDF Reader leads on 0 checks, Mozilla PDF.js on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreFoxit PDF Reader · 9.4/10
  • Free planboth
  • Most featuresFoxit PDF Reader · 4 of 4

Foxit PDF Reader scores higher on our rubric for pdf readers: 9.4 against 8.8 out of 10; our editors rank them #1 and #5.

On platform support, Foxit PDF Reader gives you Cross-platform where Mozilla PDF.js offers Web.

Foxit PDF Reader is the better fit for free cross-platform readers with collaboration. Mozilla PDF.js is the better fit for web and application developers.

  • Foxit PDF Reader fits best

    Free cross-platform readers with collaboration

  • Mozilla PDF.js fits best

    Web and application developers

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Foxit PDF Reader 9.4/10 Visit ↗ Mozilla PDF.js 8.8/10 Visit ↗
At a glance
Editor score 9.4 8.8
Ranking #1 in PDF Readers #5 in PDF Readers
Best for Free cross-platform readers with collaboration Web and application developers
Pricing model Free Free
Starting price Free Free plan
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Desktop, Mobile Self-hosted
Platforms Web, Windows, macOS, iOS, Android Web
Support Docs, Tickets Community, Docs
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Foxit PDF Reader 4/4 · Mozilla PDF.js 2/4
Annotation tools ✓ ✓
Form filling ✓ ✓
Offline access ✓ (best) Not checked yet
Text-to-speech ✓ (best) Not checked yet
Specs
OCR support None None
Platform support Cross-platform Web
Our review
Pros
  • Free access across web, desktop, iOS, and Android
  • Annotations, forms, signatures, shared reviews, and text-to-speech
  • Integrates with major storage and business services
  • Open-source PDF parsing, rendering, search, and browser viewing
  • Annotation editing includes highlights, free text, ink, stamps, and signatures
  • Supports npm, CDNs, APIs, self-hosting, and Firefox and Chrome extensions
Cons
  • OCR is documented for PDF Editor rather than PDF Reader
  • Web use requires an internet connection
  • AI document analysis excludes OCR documents
  • Requires developer integration rather than serving as a conventional end-user app
  • Its focus is PDF viewing, parsing, forms, and annotations
  • Interactive scripting is centered on PDF form calculations and actions
Our verdict

Foxit PDF Reader is a free application for personal and business users who need to open, read, print, annotate, comment on, fill, sign, and share PDF documents. Reader editions are available on the web, Windows, macOS, iOS, and Android,…

Read the review →

Mozilla PDF.js is an open-source JavaScript library and browser-based viewer for parsing and rendering Portable Document Format files. It is aimed at web and application developers who need to embed PDF capabilities in web applications or…

Read the review →
  1. Foxit PDF ReaderPDF Readers 9.4Free plan
  2. Mozilla PDF.jsPDF Readers 8.8Free plan

Strengths and trade-offs

  • Foxit PDF Reader — where it wins

    • Free access across web, desktop, iOS, and Android
    • Annotations, forms, signatures, shared reviews, and text-to-speech
    • Integrates with major storage and business services

    Where it doesn't

    • OCR is documented for PDF Editor rather than PDF Reader
    • Web use requires an internet connection
    • AI document analysis excludes OCR documents

  • Mozilla PDF.js — where it wins

    • Open-source PDF parsing, rendering, search, and browser viewing
    • Annotation editing includes highlights, free text, ink, stamps, and signatures
    • Supports npm, CDNs, APIs, self-hosting, and Firefox and Chrome extensions

    Where it doesn't

    • Requires developer integration rather than serving as a conventional end-user app
    • Its focus is PDF viewing, parsing, forms, and annotations
    • Interactive scripting is centered on PDF form calculations and actions

More comparisons

All PDF readers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update