# LibreOffice on Mobile with Collabora Office App > [! note]- > The content of this page is generated by audio/video transcription and text transformation from the content and links of this source. Source: [https://fosdem.org/2025/schedule/event/fosdem-2025-5093-libreoffice-on-mobile-with-the-collabora-office-app/](https://fosdem.org/2025/schedule/event/fosdem-2025-5093-libreoffice-on-mobile-with-the-collabora-office-app/) <video src="https://video.fosdem.org/2025/h2213/fosdem-2025-5093-libreoffice-on-mobile-with-the-collabora-office-app.av1.webm" controls></video> ## Summary & Highlights: The session 'LibreOffice on Mobile with the Collabora Office App' at FOSDEM 2025 explores the adaptation of LibreOffice for mobile devices using the Collabora Office app. This app allows users to edit documents directly on their iOS or Android devices without needing an internet connection. The session provides a technical overview of the app's architecture and its differences from the Collabora Online server. Challenges such as limited clipboard APIs and font availability on mobile platforms are discussed, along with solutions implemented by the development team. **Introduction to Collabora Office Mobile App** The Collabora Office app brings the power of LibreOffice to mobile devices, enabling users to work on documents without internet connectivity. It leverages the LibreOffice Kit to render documents, providing a consistent experience across devices. The app simplifies the server-based architecture of Collabora Online, making it lightweight and efficient for mobile use. **Technical Architecture and Functionality** The session delves into the technical architecture of the Collabora Office app, highlighting its use of a web view to integrate Collabora Online code. This approach allows the app to function without a server, utilizing the local file system for document access. The app supports various file formats and integrates with native mobile features like font selection and advanced copy-paste capabilities. **Challenges and Solutions** Developers faced challenges such as limited mobile APIs and font management, which were addressed by using local file systems and simplifying server requirements. The app avoids the need for WebSockets and external servers, enhancing its efficiency and usability on mobile devices. **Implications for Mobile Productivity** The Collabora Office app represents a significant step in mobile productivity, offering a robust, open-source document editing solution. It demonstrates the potential for open-source software to enhance accessibility and functionality on mobile platforms, contributing to eco-social transformation by promoting sustainable and inclusive technology use. ## Importance for an eco-social transformation The Collabora Office app for mobile devices is a crucial development for eco-social transformation, promoting sustainable technology use by reducing reliance on server infrastructure. It empowers users in areas with limited internet access, fostering inclusivity and digital equity. Eco-social designers can leverage this open-source tool to create accessible, community-oriented solutions. However, challenges such as device compatibility and user education remain. Addressing these requires collaboration between developers, designers, and policymakers to ensure broad access and understanding of open-source mobile tools. ## Slides: | | | | --- | --- | ## Links [Slides](https://fosdem.org/2025/events/attachments/fosdem-2025-5093-libreoffice-on-mobile-with-the-collabora-office-app/slides/238041/FOSDEM_20_0jqFmcj.odp) [Video recording (AV1/WebM)](https://video.fosdem.org/2025/h2213/fosdem-2025-5093-libreoffice-on-mobile-with-the-collabora-office-app.av1.webm) [Video recording (MP4)](https://video.fosdem.org/2025/h2213/fosdem-2025-5093-libreoffice-on-mobile-with-the-collabora-office-app.av1.mp4)