What rights does the browser extension have?

Question

JavaScript

In particular for chrome I want to do.
I am interested in the full list of type extension rights:
1) Has the right to read the PC disk / read only from its own folder
2) Has the right to write to the disk everywhere / everywhere except system folders / only to its own folder / nowhere
3) Cannot make requests to sites / maybe to any / maybe to certain
, etc...

Answer 1

Chrome Developer: extension permissions