About & License
About CopperHound
CopperHound is a private catalog for vintage and antique copper cookware. It runs entirely in your browser and stores your collection and photos locally on your own device — there is no account, no cloud, and nothing sent to a server.
License
CopperHound is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License, version 3 (GPLv3), as published by the Free Software Foundation.
Copyright © 2026 Justin Mason.
This program is distributed under the GNU General Public License v3.0. The full license text is available at
gnu.org/licenses/gpl-3.0.
Under the GPLv3, you are free to:
- Use the software for any purpose;
- Study how it works — because CopperHound ships as a single HTML file, its source code is the file itself;
- Share copies with others; and
- Modify it and distribute your modified versions.
If you distribute the software or a modified version of it, you must do so under the same GPLv3 terms, keep the copyright and license notices intact, and make the corresponding source available to those you distribute it to. See the full license for the complete terms and conditions.
No warranty & use at your own risk
CopperHound is provided “as is,” without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose, and non-infringement. You use the software entirely at your own risk.
To the fullest extent permitted by applicable law, the author (Justin Mason) shall not be liable for any claim, loss, or damages — including but not limited to direct, indirect, incidental, special, or consequential damages, or any loss of data — arising from or in connection with the software or its use, even if advised of the possibility of such damages.
Because your collection data and photos are stored locally on your device, you are responsible for maintaining your own backups. CopperHound includes a one-tap export feature for this purpose. The author is not responsible for any loss of data, however caused, including data lost when browser storage is cleared or a device is lost or replaced.
Testing status
CopperHound is currently in private testing and is provided to invited testers for evaluation. Features may change, and access is granted by invite code. Feedback is welcome via the contact page.
Opening the app
CopperHound downloads as a single HTML file that you open in your web browser. If you'd like step-by-step help, an illustrated guide is available: Opening the App (PDF). Remember to always open the file in the same browser, since your collection is saved within that browser on your device.
Last updated: 2026