Update September 17,2020: Mozilla has suspended Firefox Send and Notes after it was used to distribute malware and as part of spear phishing attacks.
Mozilla's Firefox Send is an incredibly simple and secure way to share large files from any browser.
Firefox Send lets you send encrypted, self destructing files up to 2.5GB from any browser. Anyone can easily transfer files up to 1GB, if you have or create a Firefox account you can transfer files up to 2.5GB.
Files are encrypted end-to-end and are short-lived. Files and the link to them can be set to self-destruct in as few as 5 minutes or after one download. Need more time? Files can be stored as long as 7 days or 100 downloads.
Firefox Send might be the easiest way to securely share files that I've seen. Go to the site, drag and drop or upload your files, and click or tap the upload button. Check the box if you want to add a password.
Send recipient(s) the link (or link and password). All they have to do is click on the link to download the files.
Multiple files are compressed into a zip file for download, while individual files retain their original file format.
Firefox Send had no trouble sending the files I tested, in either regular mode or incognito/private window mode.
These standard file formats went through and were downloaded intact, with and without password protection: PDF, TXT, DOCX, JPG, PNG, MP3, MP4, MOBI, and EXE. I didn't test every file format in every browser.
Transferring sensitive (and other) files is quick and easy. If you want to send files but don't want them stored anywhere online, give Firefox Send a try.
(h/t Mozilla Blog)
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