Translation on selection is a free Chrome add-on developed by vladodriver. It falls under the category of Browsers and is classified as an Add-ons & Tools subcategory.

This program allows users to manipulate, translate, and speak any selected HTML content on a webpage using Google Translate and Google TTS services. With Translation on selection, users can easily translate selected text into a HTML formatted popup that matches the style of the webpage.

Key features of this add-on include the ability to create a translation popup at the same position as the selected text, the option to switch between source and target languages, the ability to move and resize the popup, and the experimental Google TTS voice on supported languages. Users can also delete the popup by double-clicking on it.

Additionally, the add-on ensures that any manipulated translation popup is always above other content, has focus, and includes the language HTML attribute. It provides a smooth color difference between the source, target language, and the waiting state for data. Users can also have multiple versions of target and source languages on the same webpage, with real-time changes to user settings without the need to refresh the webpage.

Translation on selection also offers user settings on the extension popup, including translate and voice keys, resize and freeze keys, source and target languages, the ability to reset settings, and the option to enable or disable the add-on for specific domain URLs. Users can also edit or delete URLs from the blocked list.

Overall, Translation on selection is a useful Chrome add-on for those who frequently need to translate and manipulate selected text on webpages. Its integration with Google Translate and Google TTS services makes it a convenient tool for language translation on the go.