1. Preamble
This agreement defines the rights and use limitations of commercial software licenses. By purchasing a license, you accept the terms of this agreement.
Scope: This EULA applies to commercial software licenses unlocking premium features (e.g. Mosaic Pro for the Piwigo Mosaic plugin, or other licensed products).
Important:
- Open-source plugins (free code) are under GNU GPL v2 license
- Premium license keys (access to locked features) are subject to commercial terms below
- These two licenses are complementary, not contradictory
- For custom service offerings, see T&C – Section B
2. Rights Granted
Purchase of a license key grants you the personal, non-exclusive right to:
- Use the software or plugin with the license activated
- Access premium features unlocked by your key
- Receive software updates (duration per your plan)
- Obtain technical support under your contract terms
3. License Types
Plans and pricing vary by product. See your purchase page for specific details. Here are the general models offered:
3.1 Annual License
- Duration: 1 year from purchase date
- Renewal: Automatic or manual, per your choice
- At expiration: Software reverts to free or limited mode
- Updates: Included for 1 year
3.2 Perpetual License
- Duration: Unlimited — No expiration
- Renewal: N/A — One-time payment
- Updates: Unlimited in perpetuity
4. Use Restrictions
You may not:
- Transfer the key: The key is personal and non-transferable (linked to domain or user)
- Resell or rent: Resale, rental or exchange of the key is strictly prohibited
- Multi-site: Each site/domain/instance requires its own license
- Reverse-engineer: Any decompilation, disassembly or modification of verification code is prohibited
- Bypass checks: Bypassing or disabling the validation system is prohibited
- Share the key: Sharing your key with other users is prohibited
- Unauthorized access: Accessing accounts, APIs or resources without authorization
5. Intellectual Property
Open-source code:
- Software or plugin (source code) is distributed under GNU GPL v2 or equivalent license
- You may view, modify and distribute code per its license
- See product GitHub repository for details
License Key and Verification System:
- License key is generated from proprietary algorithms (encryption, HMAC)
- Verification system is protected against reverse-engineering (obfuscation, security hardening)
- You may not modify or bypass verification mechanisms
6. Limitation of Liability
Plugin and license key are provided "as is" without any warranties.
We are not responsible for:
- Data loss or damage caused by plugin use
- Incompatibilities with certain Piwigo or PHP versions
- Business interruption related to the plugin
- Third-party modifications to your Piwigo installation
- License verification server unavailability (local cached verification available)
Maximum liability: Refund of purchased key (€6 or €11).
7. License Verification
Your license key is verified in two ways:
- Server validation: Optional verification with remote server (better security)
- Local validation: Offline verification for 7 days if server unavailable
No tracking: Verifications only transmit your domain and key, never your personal data.
8. License End
8.1 Natural Expiration (Annual License)
- License automatically expires after 1 year
- You'll receive warning 30 days before expiration
- Plugin reverts to free mode (without premium admin panel)
8.2 Termination by You
- You may disable or uninstall the plugin anytime
- No penalties apply
8.3 Termination by Us
We may revoke your license in case of:
- Fraud or bypassing verification system
- Flagrant non-compliance with use terms
- Intellectual property violation detected in your use
Notice: We will email you before any action.
9. Support and Assistance
- Email support: contact@julien-moreau.fr
- Response time: Within 48 hours (best effort)
- Coverage: Installation, configuration, bug questions
Note: Support for custom code modifications is not included.
10. Updates
Annual license: Updates included for 12 months. After expiration, you may continue using the acquired version, but without access to future updates.
Perpetual license: Unlimited updates in perpetuity.
11. Legal Compliance
French law: This agreement is governed by French law.
Dual license:
- Source code: GNU GPL v2 (compatible with Piwigo)
- License key: Proprietary commercial terms (this EULA)
These two licenses are not contradictory. GPL applies to source code, this EULA to the commercial license key.
12. Contact and Support
For any questions about this agreement:
Email: contact@julien-moreau.fr
Response time: Within 48 hours
Last updated: March 13, 2026