Firefox is popular and most successful because of its ability to customize and add more features to the browser through add-ons.Currently Google Chrome, Safari,IE ,Opera (Opera 11 alpha)supports extensions. Except for Chrome and Firefox lot of users doesn’t file type of Opera and Safari extensions, So I compiled a short list of current browsers extensions files formats.
Browser extensions file types
|File extension xpi||Firefox browser extension|
|File extension crx||Google Chrome extension|
|File extension oex||Opera browser extension|
|File extension safariextz||Safari browser extension|