This add-on delivers the classic Rikaichan experience but is WebExtension-compatible and actually performs way better than Rikaichan. Popups are instant, switching dictionaries is instant, and stuff just works. Different zoom levels, local text files, whatever. Very impressive!!!

Very fast ! The blue panel shows quickly so less epileptic for the eyes !

That's wonderful but how can i add more dictionary?

This is a wonderful Rikaichan replacement.