Version 2.3.8: "This extension may have been corrupted" may be fixed now.
Provides qualitative translations quickly. Moreover, you're able to browse through synonyms, play the text in order to hear the correct pronounciation, browse through the history of translations. Translation directly on a webpage is available. As well, you can set up a lot of combinations for different languages.
Highlight a word or a text fragment and press T in order to translate directly on the page. Note that it does NOT work in PDF due to some technical issue of Chrome.
Please, also note that monetization is present in the extension (saving 100%-anonymous visited referals statistics). Is is POSSIBLE TO TURN IT OFF easily in the settings.
P.S.: feel free to contact me at firstname.lastname@example.org.