Techniques include outputting to a developer an offer to opt-in to a translation feature that enables human translators to translate their web page to a target language. In response to receiving a first request to opt-in to the translation feature, the server: generates and stores a web page copy, obtains from the human translators translations of at least a portion of the web page from its source language to the target language, modifies the web page copy based on the obtained translations to obtain a translated web page that is a translated version of the web page, detects a second request for the web page from a computing device associated with the target language, and in response to detecting the second request outputs, to the computing device, the translated web page with additional content relevant to the computing device or a user associated with the computing device.