A classic and very useful addon. For those using a FF browser with XUL support; the version 2.0.1 works fine in Waterfox (FF56) whereas v1.2.13 works in Basilisk (FF52)

Web Developer includes CSS tools, forms tools, HTML/CSS validation tools, & more. I recommend this extension for web developers.

good word. a very helpful tool

My go to developer tool in Firefox and Chrome. Reliable, easy to use, able to inspect element in Responsive design and see how changes will look. Almost perfect (if the inspector could show these changes across all screen sizes, this would give it 10 stars)

Na dann ist ja alles TUTTI

A must have for any web developer! I prefer this WebExtension (v2.0.1) than the old one (XUL extension).

Genial!!!

It's crap after 56.02 Firefox. Same shitty thing as on Chrome. Still have FF 56 and FF Nightly. I see no other workaround.

Unfortunately version 1.2.13 doesn't work with FF 62.x
Suggestion to developer: Go back and fix 1.2.13 to work with FF 62.x

if you are a developer, this is a must have extension.

2

muy útil con toda la cantidad de herramientas que tiene. Echo en falta una opción para mostrar los id cuando pasamos el puntero del ratón por encima de un elemento

Super praktisch

You turned this great extension to a pile of shit
As somebody mentioned in below i did a downgrade on "moz://a firefox" :)) and installed the old version of this extension.

初学者，还在使用初级阶段，无法给出评论，谢谢

давно пользуюсь, прекрасное дополнение дающее важные функции для продуктивной работы

It appears to have aalmost everything you can think of to use.

complet

عالی

I love it

bgfjhntrdj

非常不错，但不知道怎么用

не работает!

Super

Не хватает русского языка. Ещё минус в том, что выбранное сбрасывается.