Privacy Policy
Last updated: 7/13/2025
Your Privacy Matters
At STL Viewer, we believe your privacy is fundamental. This Privacy Policy explains how we handle your data when you use our online 3D file viewer and converter.
Local File Processing
Your files never leave your device. STL Viewer processes all 3D files locally in your web browser using WebGL technology. We do not upload, store, or transmit your files to our servers.
This means your STL, OBJ, PLY, and other 3D model files remain completely private and secure on your computer.
Information We Collect
We collect minimal information to provide our service:
- Usage Analytics: Anonymous data about how our website is used (pages visited, features used)
- Technical Information: Browser type, device information, and performance metrics
- Error Reports: Technical errors that help us improve the service
We do not collect: Your 3D files, personal information, or any content you upload.
How We Use Information
We use the collected information to:
- Improve our 3D viewer performance and features
- Fix technical issues and bugs
- Analyze usage patterns to enhance user experience
- Ensure website security and stability
Third-Party Services
We may use third-party services for analytics and performance monitoring. These services only receive anonymous, aggregated data and cannot access your files or personal information.
Data Security
Since your files are processed locally, they are never transmitted over the internet to our servers. This provides the highest level of security for your 3D models and designs.
Your Rights
You have the right to:
- Access any personal data we may have about you
- Request deletion of your data
- Opt out of analytics tracking
- Contact us with privacy concerns
Contact Us
If you have any questions about this Privacy Policy or our data practices, please contact us at:
Email: privacy@stlviewer.com
We'll respond to your inquiry within 48 hours.
Changes to This Policy
We may update this Privacy Policy from time to time. We will notify users of any material changes by posting the new policy on this page and updating the "Last updated" date.