Hiztegia Gaztelaina-Euskara, also known as Diccionario Gaztelaina-Euskara, is a browser add-on for Chrome developed by javierpose. This free tool falls under the Browsers category with a focus on Add-ons & Tools. The program serves as a simplified translation dictionary from Euskara (Basque) to Castilian Spanish, offering offline functionality. Users can easily link terms to renowned dictionaries like Euskaltzaindia, Elhuyar, and Labayru. Additionally, the tool allows for saving favorite terms and provides the option to send them via email for further study, such as integrating them into Quizlet for mobile learning purposes. Furthermore, a version with the default language set to Spanish is available, catering to users who prefer both language options in the browser interface. Language switching between Euskara and Spanish is straightforward, and the search functionality is designed to be flexible, offering suggestions even with inflected terms.