PsiDriveGuest senders can create a transfer without registration, within the published guest quota.
Private file sharing with fewer places to trust.
PsiDrive is a product of Leocloud Pvt Ltd. It was built around a simple idea: a temporary file-transfer service should not need to store the key that decrypts the files it holds.
Browser encryptionNo guest signupTemporary transfersPrivate object storage
Why PsiDrive exists.
Many file-sharing tasks are short-lived: moving a document to another device, sending a project export, or giving a collaborator one temporary download. PsiDrive focuses on that narrow job instead of acting like permanent cloud storage.
The transfer key is generated in the browser and placed in the link fragment, which normal HTTP requests do not send to the server.
Guest transfers normally expire after 24 hours and may be configured for deletion after the first completed download.
A mostly serverless Cloudflare stack.
The web app runs on Cloudflare Pages, the API runs on Cloudflare Workers, application metadata lives in D1, and encrypted file objects are stored in a private R2 bucket. Browsers upload encrypted chunks through short-lived signed URLs, so large file bodies do not need to pass through the API Worker.
That architecture is described publicly so users can understand the trust boundary. It is not a claim that software is invulnerable or independently certified.
What “private by design” means here.
It means PsiDrive deliberately separates encrypted file objects from the transfer key and limits retention for temporary transfers. It does not mean that sharing choices stop mattering. Anyone with the complete link may be able to download while a transfer remains active, so senders should protect the link and use the optional transfer password when appropriate.
Read the security model, privacy and retention summary, or the guide to URL-fragment encryption keys for the technical details.