Compare Chrome extensions: ScanQR vs Udemy Downloader

Short description
Scans QR codes using your webcam.	Udemy downloader extension.
Full summary
Scans QR codes and displays their contents on a Chromebook or other computer with a suitable webcam. What's a "suitable" webcam? It's one that can focus the QR code within the red square in the app sharply enough that the app can decode it. My test results: Chromebook Pixel: yes Samsung ARM Chromebook: yes Acer C7 Chromebook: yes CR48: yes 2009 MacBook Pro: yes, except for very small, dense QR codes 2011 iMac: no, unless the QR code is ridiculously large (over one foot across) If Chrome implements an API to let developers adjust camera-focus settings, I'll be able to improve the app to work with more cameras. Source: https://github.com/sowbug/scanqr-app	In this user-friendly chrome extension, you can download the lecture videos in the course content you have already bought on Udemy collectively or individually. If you turn off the "ask where to save before downloading" feature in Chrome settings, you can download in a categorized way. (You can change the settings on "chrome://settings/downloads") Update notes : v3.1 - fixed stuck problem.