Every extension listed here collects no data, sends no data, and has no server. Settings are stored locally with Chrome's own extension storage and are never transmitted. There are no accounts, no analytics and no advertising in any of them.
Policies
Why these are short
A privacy policy is long when there is a lot to disclose. These are short because the honest answer to almost every question is that the data never leaves your machine, so there is nothing to describe about how it is transferred, retained, shared or sold.