Developer mokshablr has released Gander, an Android file viewer capable of opening various file formats without requesting system permissions [1].
The tool addresses a critical gap in mobile privacy by allowing users to view documents without granting broad storage access to third-party applications. Many existing viewers require extensive permissions or rely on cloud-based rendering, which can expose sensitive data to external servers.
mokshablr said the project was born from a personal discomfort with the security risks associated with opening files sent by others. The developer said that the current Android ecosystem often forces a choice between massive office suites that require account sign-ins or lightweight viewers that request storage access [1].
According to the developer, some smaller viewers may upload files to a server to render them, creating a privacy vulnerability [1]. Gander is designed to eliminate this risk by processing files locally and operating without the need for permissions.
Beyond security, the developer said the inconvenience of managing numerous applications for different file types was a primary motivator for the project. "Also the hassle of having to download different apps for different file formats was really annoying," mokshablr said [1].
The application is currently available to the public via GitHub [1]. By consolidating multiple formats into a single, permission-less interface, the tool aims to streamline the user experience while maintaining a strict security posture.
“"I have always been uneasy about opening files people send me."”
The release of Gander highlights a growing demand for 'zero-permission' software in the Android ecosystem. By bypassing the traditional permission request model, the tool reduces the attack surface for potential malware and prevents the unauthorized exfiltration of user data to remote servers, providing a blueprint for more privacy-centric utility apps.
