Terms of use
Last updated: 23 May 2026.
superdeduper is a free, open-source personal project shared as-is. By downloading, installing, or using the app, or by using the website at superdeduper.io, you agree to these terms.
The software
The desktop app and source code are licensed under the MIT License. The full text ships with every release and is also available in the LICENSE file of the source repository.
In short: you can use, copy, modify, and redistribute the software freely, with one condition — the copyright notice and license text must be included.
No warranty
This software is provided "as is", without warranty of any kind. superdeduper performs destructive operations on your files. While the defaults are reversible (Recycle Bin, archive with manifest), bugs in this codebase can — and given enough use, eventually will — cause data loss.
You are responsible for backing up your data before running superdeduper. You are responsible for reviewing what the app proposes to delete before confirming. The authors accept no liability for lost data, damaged files, or any other harm arising from use of the software.
Acceptable use of the website
The website and the leaderboard API at
api.superdeduper.io are provided for the benefit of
superdeduper users. Don't:
- Submit fake or manipulated benchmark results.
- Attempt to bypass anti-cheat checks, rate limits, or authentication.
- Use the API for purposes other than leaderboard submission from a real superdeduper installation.
- Scrape, mirror, or republish leaderboard data in bulk without permission.
We may rate-limit, suspend, or delete accounts that violate these terms. Honest use is the only intent here — almost nothing you do in good faith will be a problem.
Account deletion
You can delete your leaderboard account at any time. See the privacy page for how.
Changes to these terms
We may revise these terms as the project evolves. Material changes will be noted in release notes and the "Last updated" date above. Continued use after a change constitutes acceptance.
Contact
Questions: kwikksilva@gmail.com. Issues with the software: GitHub Issues.