WebStats

This add-on allows to show the time spent on websites and the volume of data received by them.

Privacy:
No data is collected, this extension does not communicate with any servers.

Credits
This extension is not under a free license but is open source.
This means that you cannot use its code, but you can consult it.
Source code : https://gitlab.com/nin_/web-stats

Library & Technologies used:

Svelte released under MIT License
Rollup released under MIT License
svelte-frappe-charts by Dave Lunny released under MIT license
Frappe Charts released under MIT License

Code from Carbonalyzer (released under MIT license) was used.

The icon of the addon is "timer" by Iconika under CC-By.