Privacy Policy
Last updated: 12/19/2025
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: andeesh.mehdi@gmail.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.
Cookies and Tracking Technologies
STL Viewer uses cookies and similar tracking technologies to enhance your browsing experience and analyze website usage. Cookies are small text files stored on your device when you visit our website.
We use the following types of cookies:
- Essential Cookies: Required for the website to function properly and cannot be disabled
- Analytics Cookies: Help us understand how visitors interact with our website by collecting anonymous information
- Performance Cookies: Monitor website performance and identify areas for improvement
You can control cookie preferences through your browser settings. However, disabling certain cookies may affect the functionality of our 3D viewer.
Children's Privacy
STL Viewer is not intended for children under the age of 13. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us immediately.
If we discover that we have collected information from a child under 13 without parental consent, we will delete that information promptly.
Data Retention
Since STL Viewer processes files locally on your device, we do not retain your 3D files or model data. Any anonymous analytics data we collect is retained only as long as necessary to improve our services, typically for a period of 24 months or less.
You can clear your browser's local storage and cache at any time to remove any temporary data stored on your device.
International Data Transfers
STL Viewer is accessible worldwide. Since all file processing occurs locally on your device, your 3D files are never transferred internationally or stored on servers outside your control.
Any anonymous analytics data we collect may be processed in different countries where our service providers operate. We ensure that appropriate safeguards are in place to protect your data in accordance with applicable privacy laws.
Legal Basis for Processing
Under applicable privacy laws, including GDPR and CCPA, we process your information based on the following legal grounds:
- Legitimate Interest: To improve our services, analyze usage patterns, and ensure website security
- Consent: For optional analytics and tracking features where you have provided explicit consent
- Legal Obligation: To comply with applicable laws and regulations
California Privacy Rights (CCPA)
If you are a California resident, you have additional rights under the California Consumer Privacy Act (CCPA):
- Right to know what personal information is collected, used, and disclosed
- Right to delete personal information we hold about you
- Right to opt-out of the sale of personal information (we do not sell personal information)
- Right to non-discrimination for exercising your privacy rights
To exercise these rights, please contact us using the information provided in the Contact Us section.
GDPR Compliance
For users in the European Economic Area (EEA), STL Viewer complies with the General Data Protection Regulation (GDPR). Your rights include:
- Right to access your personal data
- Right to rectification of inaccurate data
- Right to erasure ("right to be forgotten")
- Right to restrict processing
- Right to data portability
- Right to object to processing
- Right to withdraw consent at any time
To exercise any of these rights, please contact us. We will respond to your request within 30 days.
Third-Party Links
Our website may contain links to third-party websites or services. We are not responsible for the privacy practices or content of these external sites. We encourage you to review the privacy policies of any third-party sites you visit.
Privacy Policy Frequently Asked Questions
Do you store my 3D files?
No, we do not store your 3D files. All file processing happens locally in your web browser using WebGL technology. Your files never leave your device.
What information do you collect?
We only collect anonymous usage analytics and technical information to improve our service. We do not collect personal information or the content of your 3D files.
Can I opt out of analytics tracking?
Yes, you can opt out of analytics tracking through your browser settings or by using privacy-focused browser extensions. Disabling analytics will not affect the core functionality of our 3D viewer.
Is my data secure?
Yes, your data is secure. Since files are processed locally on your device and never uploaded to our servers, your 3D models remain completely private and secure.
How do I delete my data?
Since we don't store your files, there's nothing to delete on our end. You can clear your browser's local storage and cache to remove any temporary data stored locally on your device.
Do you share my data with third parties?
We do not share your personal information or files with third parties. We may use third-party analytics services that receive only anonymous, aggregated data.
Related Policies
For more information about our practices, please review our other policies:
Effective Date and Updates
This Privacy Policy is effective as of 12/19/2025 and applies to all users of STL Viewer. We reserve the right to modify this policy at any time. Material changes will be communicated through our website, and continued use of our service constitutes acceptance of the updated policy.
We recommend reviewing this Privacy Policy periodically to stay informed about how we protect your privacy.