Welcome to the 3MF to STL Converter Privacy Policy. We are committed to protecting your privacy and ensuring the security of your 3D model files. This document explains how we handle your data when you use our conversion services.
We believe your 3D models are your intellectual property and should remain private. That's why we offer two conversion modes:
When you use Local Conversion, your files are processed entirely in your web browser using WebGL technology. This means:
- Your files never leave your device - No upload, no server processing
- No data is stored - Files are only held in memory during conversion
- Complete privacy - We cannot see, access, or store your 3D models
- Works offline - Once the page loads, conversion works without internet
When you choose Cloud Conversion for larger files, we implement strict data protection:
- Encrypted transmission - All file transfers use HTTPS encryption
- Immediate deletion - Files are automatically deleted immediately after conversion
- No retention - We do not store, backup, or archive any uploaded files
- Minimal access - Files are only accessed by automated conversion systems
- No file data collected - Your 3D models stay on your device
- Anonymous usage statistics - Page views, conversion counts (no file content)
- Temporary file processing - Files are held only during conversion
- Basic metadata - File names, sizes, and conversion timestamps for error monitoring
- IP addresses - For security and abuse prevention (retained for 7 days)
- Cookies - For essential website functionality and preferences
- Analytics - Anonymous usage patterns to improve our service
We use collected information for:
- Providing and improving our conversion services
- Monitoring system performance and reliability
- Preventing abuse and maintaining security
- Anonymous analytics to understand usage patterns
We implement comprehensive security measures:
- TLS/SSL encryption for all data transfers
- Automatic file deletion after cloud conversion
- No permanent storage of user files
- Regular security audits of our infrastructure
We may use trusted third-party services for:
- Hosting infrastructure - Secure cloud servers
- Analytics - Anonymous usage statistics
- Error monitoring - To identify and fix issues
These services are bound by their own privacy policies and are selected for their security practices.
You have the right to:
- Use local conversion for complete privacy
- Request deletion of any data we may have
- Opt out of analytics tracking
- Contact us with privacy concerns
Our service is not intended for children under 13. We do not knowingly collect personal information from children.
We may update this Privacy Policy periodically. Significant changes will be announced on our website. Continued use of our services after changes constitutes acceptance.
If you have questions about this Privacy Policy or our privacy practices, please contact us.
Last updated: March 2025