First time it was working like a charm... and then it stop blurring my chat box.... please fix it.

very simple, just plug and play

SUP

Does what it says. Very simple to use.

Works just fine! Highly customizable.
I was using another extension, but it stopped blurring the contents. I'm glad I found this.

Cumple lo que promete!

Good, and keep update

My jaw dropped when I looked for "firefox whatsapp blurring extension" and saw this. Whoever developed this is a genius.