I used to play around with the inspect element, this is much easier to use.

Tried using it, it didn't work, not recommended.

Pretty cool, can edit stuff, but you can still interact with the page while you write (for example, while you are watching a youtube video)

ease of use is great! It does let you edit protected things but it doesn't allow them to be copied to the clipboard. I didn't use it much but it works well for the 40 seconds I tried it.