Simple Translate is a Firefox extension designed to enhance language translation capabilities directly within the browser. This tool allows users to translate selected text instantly, with a convenient translation button that appears upon text selection. Users can customize their experience by enabling options such as 'Do not display the button if translation is not required' and 'Automatically switch to the second language' for seamless transitions between languages like English and Japanese.

The extension supports various translation methods, including options to translate entire pages, selected text, or links via the context menu. It integrates with powerful translation APIs like Google Translate and DeepL, ensuring accurate translations. Recent updates have migrated the extension to Manifest v3, improved theme settings for better visual compatibility, and added support for languages with right-to-left scripts, making it a versatile tool for users looking to overcome language barriers.