I have developped that tool in winter 2015.
My objective was to sell it as a fremium tool to lawyers to speed-up their work when they search information with a web browser in private law databases.
I realized that lawyers have really big needs for technical tools, but they are not ready to pay a few boxes for them.
So my tool is currently on the Chrome Web Store, at https://chrome.google.com/webstore/detail/root, but I don't maintain it anymore.
This project has permited me to loearn a lot on the following aspects:
-HTML DOM search and manipulation via javascript
-Chrome Dev Tools
-Safari Dev Tools
-Few web source editors and tools
-Chrome Extension creation (manifest, json format)
-Publication process on Chrome Web Store