My favorite web resources
I hope there is something here you find useful.
There is a big hub on GitHub for developer resources, which can be found here.
What's my Screen?
Online tool to find your screen resolution. Quick and easy to use, helps with debugging visual issues
EditThisCookie is a cookie manager. You can add, delete, edit, search, protect and block cookies - all achieved within a few clicks to help save time.
Go Full page allows you to take a full screen screenshot, useful if you need to supply an image to show a layout.
Screen Recorder is the easiest tool I've used to quickly record your screen activity, with each recording you can choose whether to have voice or not.
The Web Developer extension adds a toolbar button to the browser with various web developer tools.
If you ever need to set up automatic refresh on a page, I've found this useful in a few instances!