Attention! This is a machine translation, careful evaluation of the translation by the user is necessary!
1. Translation in the browser ForFirefox+Chromium Install the extension --Simple translate(by sienori). In the settings, select "pop-up window", window size and fill color, font color of the translated text. The translation of the selected text will appear in a pop-up window. Without menus and additional windows. Translation of the entire page is available.
--simple translate(by FilipePs) for Firefox and for Chromium(from the author's page) - translating the entire page.
The program allows you to translate wherever you can select text: text files, Libreoffice, synaptic, browser, terminal, pdf(if there is a text layer). + voice acting of the source text and translation, +OCR ... and much more.