Compare Chrome extensions: PDF Viewer vs Autolingo

Stats PDF Viewer PDF Viewer Autolingo Autolingo
User count 1,000,000+ 10,000+
Average rating 3.29 4.43
Rating count 2,630 103
Last updated 2023-07-10 2022-03-18
Size 2.97M 201.73K
Version 3.9.49 2022.03.18
Short description
Uses HTML5 to display PDF files directly in the browser. Automatically completes Duolingo lessons so you don't have to!
Full summary

PDF.js is a Portable Document Format (PDF) viewer that is built with HTML5.

PDF.js is community-driven and supported by Mozilla Labs. Our goal is to create a general-purpose, web standards-based platform for parsing and rendering PDFs.

This extension provides PDF.js as the default PDF viewer in Chrome.

If you want to use this viewer to view local files, visit chrome://extensions/?id=oemmndcbldboiebfnladdacbdfmadadm and put a check before "Allow access to file URLs".

Please report any issues at https://github.com/mozilla/pdf.js/issues

Don't have a Github account? I also accept feedback at [email protected]

Known issue: PDF files generated via a form (POST request) cannot be viewed.

Contains opt-out telemetry since version 1.5.285, see https://github.com/Rob--W/pdfjs-telemetry#privacy-policy

Why learn a language when Autolingo can learn it for you! 🔥

This extension adds a button to the top-right of every lesson. If you click this button, it will fully complete the lesson for you.

If you are in the middle of the lesson, you can open the extension and click "Solve & Skip" to complete the current question or "Solve" to just solve it but stay on the question so you can see the answer.

Hotkeys: CTRL+ENTER for "Solve & Skip" ALT+ENTER for "Solve" ALT+S for "Skip without solving"

This is likely to break if Duolingo updates their website, so please let me know if it's not working so I can fix it!