Firefox Send

A Secure and Simple Way to Share Large Files

Transferring sensitive documents or large media files often involves a compromise between convenience and security. Many services impose restrictive file size limits, require account creation, or leave data vulnerable. This app provides a direct solution for private, ephemeral file sharing without the typical friction.

Core Functionality and User Workflow

Firefox Send operates on a principle of end-to-end encryption and user-controlled expiration. The primary action is uploading a file directly from your device. Before sending, you set a download limit—from a single download to up to 100—and an expiration timer ranging from 5 minutes to 7 days. Once configured, the app generates a unique, shareable link. Recipients can use this link in any modern browser to download the file; no account or app installation is required on their end. All files are encrypted on your device before upload, and the encryption key is part of the link, meaning Mozilla's servers cannot access your data. The interface is a clean, single-screen design focused on the upload panel, with a history log of your recent sends for quick reference.

Key Technical and Usability Advantages

The app distinguishes itself through its privacy-first architecture and streamlined utility. It removes the persistent storage and data mining models common to cloud services.

• End-to-end encryption ensures files are private from upload to download, inaccessible even to the service provider.
• Set custom expiration dates and download limits for automatic, irreversible file deletion.
• Share files up to 2.5GB in size via a simple link, with no recipient account required.
• Clean, ad-free interface provides a focused tool without distractions or upselling.
• Open-source development by Mozilla allows for public scrutiny of its security model.

We suggest trying Firefox Send for a genuinely private method to transfer contracts, photos, or project files.

Heads up: you'll need wifi or a mobile data connection for uploads and downloads. The service is free for files up to 2.5GB.