
1. ColorZilla
ColorZilla
An interesting and very popular extension that works very simply – you can take any color from any site if you need it 🙂
2. PerfectPixel
PerfectPixel
The most famous extension for adding a picture-layout to check your layout pixel by pixel. How to use it – he told on his YouTube channel: link
3. WindowResizer
WindowResizer
A simple plugin that allows you to easily resize your browser with one button
4. Checker Plus for Gmail
Checker Plus for Gmail
This is just a brilliant thing, especially if you often work with clients through Google mail. Shows email notifications instantly