Before I used Rikaichan and back then you could use the extension with pdf files open with firefox as well. For some reason, now pdf files opened with firefox will not show the pop-up window. Can you fix this? Also, if you could make this work with epub files it would be awesome.

EDIT: Thanks a lot for clarifying this problem, I have edited my review as this is something that the extension itself cannot solve. I used the link that you provided, this opens some unrelated pdf file and from then I opened my own pdf file within the same window and the plugin now works as it did before. Can you please explain what's special about that pdf tab that makes the extension work?

It would be nice if you include other languages (strongly request russian jmdict) and also "kirei cake"

Worked right out of the box. Great replacement for the old rikaichan!

Excellent

Simple and effective. Perfect.

Excelent replacement for the old rikaichan. I hope you can keep updating it every month, please.
Thank you!

One of the best tools (if not the best) I've used so far as many legacy add-ons became non compliant ever since. It's pretty neat, lightweight, reliable, doesn't seem to eat up your RAM as others do and It gets updates as well :) Otherwise I'd be utterly lost as I depend on it so much.

使用方便，有些連字典都查不到的單字或口語用法，使用Rikaichamp都可以查的到!!!

very good as it not only translates kanji

C'est super !
Merci beaucoup pour votre travail !!

Great

This works exactly like Rikaichan used to work. Excellent! Is there a way to make this work with the new Thunderbird? I've added by the icon does not show. Not sure this is an issue related to Thunderbird beta...

Very well done! Thank you!

This is fantastic. I downloaded it and it worked instantly. No drama. I just wish it had some more functions like save etc. Well, especially save, so that I can make word lists. Thanks to whomever made this.