Hey, I offer an overview of extensions that I use when developing websites. They are practically the only extensions I use, besides AdBlock. I try to keep them to a minimum.
An extension used to check Facebook pixels on a website. You can use it to immediately check if your tracking pixels and event sending are working, and if not, it will advise you on what to fix.
A slightly less successful version of the Facebook extension, this time for Google scripts (Analytics, Tag Manager, etc.). The control could be a little better, sometimes it’s quite difficult to switch between them. Before using it, you need to enable it on a specific page and then reload it.
A ruler. I use it occasionally to measure distances, but mainly to check that elements are aligned to the pixel exactly as I want them to be.
A great extension that simply displays the page load time on its button. Even though I have Tracy enabled during development, which only measures script execution time, this extension measures the total page load time.
A dropper for quickly determining the color used on a website. Faster than examining an element through development tools and looking for its color/background color.