better than other css injectors because changes are persistent, has badge icon (number of rules applied) and many ways of adding css...

Excelent extension

buggy, no selection of width and height

Even user interfaces of million dollar company sites can be frustrating or annoying. JavaScript injection via this plugin has saved me some woes.

Dear Saba, I spent 15 minutes just to manage a login to put this review. It never happened in past 20 years, ever... in short, I loved it that much!
BOSS, I LOVE YOU for this. Nothing simpler could be achieved with almost everything one might need or think of.
It is not worth trying, it is a MUST HAVE. It just replaced 'Custom Style Script 2' from my workflow, happily.

just what i need,thx a lot

Amazingly useful extension.
Also a really great UI (it's always a nice bonus).

Easier to use than TamperMonkey or GreaseMonkey

Easy to use, good UI design & feature set. Perfect.

It seems to work but it's not possible to instert HTML in the page. The code is insert at the beginning of the page.
I hope you will add the possibility to simply "edit" the page source code.

helpful. I using it to custom js and css of some chat tools that using on work :D