Drawing Bookmarklet
Usage
To add the bookmarklet to your bookmark bar, drag either of the following two links onto your bookmark bar:
(Enable the bookmark bar with Ctrl + Shift + B if it's disabled)
Direct Script: Drawing

Remote Script: Drawing
Which one to choose?
The direct script puts the entire script in your bookmark, while the remote script fetches it from a remote repository every time. The remote one will take ±200ms to load and won't work offline, but will work in more browsers. Most modern browsers should support both, but if the direct one doesn't work, try the remote one.
More info about the bookmarklet, including features and security, can be found at: https://github.com/SimonDMC/drawing-bookmarklet