Free file transfer by Kagisuru
Send large files that are too big to email — encrypted in your browser, up to 2GB, free.
Verify yourself
To prevent files being sent in your name, we email you a 6-digit code to verify it is you. (If you do not have an account, one is created at the same time.)
Enter a receiver
A 6-digit code sent to this address will be required to open the file.
Choose a file
Select a file or drag and drop it here.
Nothing is uploaded yet. Your file is encrypted in your browser and uploaded once you press the send button below.
By using this service, you agree to our Terms of Service and Privacy Policy.
How it works
Click an icon to see the details. No Kagisuru account needed on the receiving side.
When you hit "Encrypt and send", a digital key is issued for the email address you entered. Your file is encrypted with that key inside your browser, and only the encrypted file is uploaded. You can send up to 2GB.
Encrypted end to end
Files are encrypted on your own PC. Unencrypted files are never stored on our servers.
Both encryption and decryption happen inside the browser. Only the person who verifies with the 6-digit code sent to the address you specified can open it.
Frequently asked questions
この製品は（公財）東京都中小企業振興公社 中小企業ニューマーケット開拓支援事業の支援対象製品です。
(※但し、公社は製品の効能効果を保証するものではありません)
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Operated by IDEOJ Inc.
Based in Tokyo, we build information-security services for businesses powered by encryption technology.