Top 10 useful script bookmarks - GOODBAD

The so-called script bookmark is bookmarklets, I do not know if the name is appropriate, some people call it a small bookmark, I think it is very appropriate, because it is much more than the ordinary bookmark function, what is this? Script bookmarks relative to extensions:

One is easy to install - just drag it to the bookmark bar, don't delete it.

Second, it can be supported across browsers.

Third, it does not occupy resources.