During December 2024, Mabrouk contributed to the HeyPuter/puter repository by localizing the billing section for French-speaking users. Focusing on internationalization and localization using JavaScript, Mabrouk completed French translations for all billing-related terms and messages, ensuring a consistent user experience. The work involved identifying undefined translation keys within the billing module and systematically replacing them with accurate French text, addressing gaps in the existing localization framework. While the scope was limited to a single feature and did not include bug fixes, the changes established a foundation for future localization efforts across other modules, demonstrating attention to detail and process completeness.