OPEN SOURCE · CLIENT-SIDE ENCRYPTION

Your cookies.
Your keys.

Keep encrypted cookie buckets in sync across your authorized browsers. The server stores ciphertext only.

Chromium extension · self-hostable API · no cookie plaintext on the server

A cookie protected by a padlock

A SMALL, CLEAR WORKFLOW

Three steps. No hidden sync.

01

Sign in

Choose any login method configured by your server.

02

Unlock once

Your vault password stays local to the extension session.

03

Capture or apply

Save a browser session to a bucket, or restore it when you need it.

THE SECURITY MODEL

Simple enough to inspect.

Cookie values, bucket names, and vault passwords are encrypted in your browser. The service enforces account limits and stores opaque encrypted envelopes.

Read the protocol →