Is there an add-on for Opera similar to Firefox's TextMarker! or TextMarker Go?

These markers allow you to arbitrarily mark pieces of text with pre-defined colors, which is extremely useful for task lists, checklists or the likes: you can easily mark an item like passed/failed etc.


Yes, the name is Highlighter:

Description from the home page:

With this extension you can highlight elements on the webpage. Basicly it works like a highlighter pen, but it's more complex. You can highlight any number of elements including sections of text and tables and areas on images.


  • press hotkey and mouse button and draw the rectangle
  • click on a rectangle to destroy.
  • 1
    This extension is only supported in Opera 11 and 12. – Amr Lotfy Jun 21 '15 at 22:08

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