Firefox Send

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Firefox Send
Firefox Send logo.svg
TypeFile sharing, encryption software
Launch date12 March 2019

Firefox Send is a free-to-use, online file-sending service, able to handle files up to 2.5 GB.[1] It was developed by Mozilla and is licensed under the terms of the open source Mozilla Public License.[2] Development started in 2017[3] and it came out of beta on 12 March 2019.[4]

Technical design[edit]

The source code is written in Node.js and hosted on GitHub.[5] All files are encrypted before being uploaded and decrypted on the client after downloading. The encryption key is never sent to the server.[6]

Third-party clients[edit]


  1. ^ "Introducing Firefox Send, Providing Free File Transfers while Keeping your Personal Information Private". Retrieved 14 March 2019.
  2. ^ mozilla/send LICENSE file on GitHub, Mozilla, 2019-03-14, retrieved 2019-03-14
  3. ^ "First commit". GitHub. Retrieved 14 March 2019.
  4. ^ "Mozilla launches its free, encrypted file-sharing service, Firefox Send". Techcrunch. Retrieved 14 March 2019.
  5. ^ "Simple, private file sharing from the makers of Firefox". GitHub. Retrieved 14 March 2019.
  6. ^ "File Encryption". GitHub. Retrieved 14 March 2019.