Fluid. Secure. Native.
The clipboard manager that feels like it shipped with your browser.
Mercury Clipboard is a privacy-first, lightweight clipboard manager extension for Chromium-based browsers (Chrome, Brave, Edge, Arc). It is designed to be fast, secure, and respectful of your data.
- 🔒 Zero-Knowledge Privacy: Your data never leaves your device. Everything is stored locally.
- 🛡️ At-Rest Encryption: Clipboard history is stored encrypted (AES-GCM 256-bit) on your disk, preventing plain-text access from casual snooping or file inspection.
- 👻 Ghost Mode: Optional RAM-only mode. When you close the browser, your clipboard history vanishes forever.
- ⚡ Native Performance: Written in pure JavaScript (Vanilla JS). No heavy frameworks, no tracking scripts.
- 🍏 Mac Optimized: Native support for macOS shortcuts (
Option + V) and symbol handling (√). - 🎨 Shadow DOM UI: The interface is isolated from web pages, preventing CSS conflicts.
The easiest way to install Mercury is directly from the official store: 👉 Download Mercury Clipboard
If you want to inspect the code or modify it:
- Clone this repository:
git clone https://github.com/Furowlan/mercury-clipboard.git - Open Chrome and go to
chrome://extensions - Enable "Developer mode" (top right toggle).
- Click "Load unpacked".
- Select the folder where you cloned the repo.
- Open History: Press
Alt + V(Windows/Linux) orOption + V(macOS). - Navigate: Use
Arrow Keysto select an item. - Paste: Press
Enteror click on the item. - Security Settings: Click the extension icon in the toolbar to toggle "Ghost Mode" or clear history manually.
We believe in transparency.
- No Analytics: We don't know who you are or what you copy.
- No Cloud Sync: There is no server-side database.
- Open Source: Verify the code yourself here on GitHub.
Distributed under the GNU GPLv3 License. See LICENSE for more information.
Built with ❤️ by Furowlan