Add QR codes to student login card at

UPDATE (2/1/2017): See the note at the bottom of this post.

Here is a bookmarklet that will add QR codes to the student login cards for your class.


Below is a video explaining how to use this bookmarklet.

I was recently informed by a couple teachers that the bookmarklet doesn’t work. After some investigation, I figured out why. As a security measure, new browser standards have been set that prevent many bookmarklets from working. This security measure is called a Content Security Policy or CSP. The bookmarklet will only work if you disable CSP for the page before running it.

Steps in Chrome:

  1. Install the Disable content-security-policy Chrome extension
  2. Load the printable sign in cards page at
  3. Click the disable content security policy icon to disable CSP
  4. Reload the page
  5. Use the bookmarklet as shown in the video above
  6. Click the disable content security policy icon to re-enable CSP