Firefox Just Got an End-to-End Encrypted File Sharing Service

Ruben Fields
March 14, 2019

THE MOZILLA FOUNDATION has announced a full rollout for Firefox Send, its service that allows users to share files of up to 2.5GB free of charge using just their browser. Available through any browser at, Firefox Send allows you to upload files and send them to someone else with end-to-end encryption. You can set the files to expire after a certain period or auto-delete itself as soon as the recipient finishes downloading the file.

Firefox Send is handy for those moments when you need to share video, audio or photo files that can be too big to squeeze into an email attachment.

Firefox Send has been available as a "Test Pilot" experiment since August 2017, but it took Mozilla some time to iron out all the kinks and ensure that the service will work for more than a handful of people at a time.

Securely sharing large files can be annoying, but Mozilla wants to make it easier.

Firefox Just Got an End-to-End Encrypted File Sharing Service

Given that the files are encrypted and aren't stored, however, it's going to be ruddy hard for anyone to find out what you've sent anyway. For those seeking extra privacy, shared files can also be locked with a passphrase. Still, Send shouldn't be trusted with the most sensitive types of data, such as files that might land a dissident or whistleblower in prison.

All files uploaded to Mozilla's servers are encrypted, the browser maker said. If you are logged into a Firefox account, you can share files of up to 2.5GB and enable a limit of up to 100 downloads. This concept is in vogue right now; Snapchat-like impermanence was also mentioned by Facebook CEO Mark Zuckerberg as a core tenet for privacy and security in that company's stated future plans.

Firefox Send files are available for up to 7 days and can be password protected.

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