HighlightAll

HighlightAll automatically highlights and counts all occurrences of the selected text with just a click (substitute to Ctrl-F with highlight option). Another click in the document removes highlighting. In addition, HighlightAll displays in the status bar how many times the selected text was found. Enabling/disabling can be done with a customizable keyboard shortcut, or you can set it to be always active. The extension works also in source code viewing (for developers).