Privacy Policy
Last updated: September 16, 2025
Introduction
At CSS Unit Tools, we take your privacy seriously. This Privacy Policy explains how we collect, use, and protect your information when you use our CSS unit conversion tools and services. We believe in transparency and want you to understand exactly what data we do and don't collect.
Key Point: CSS Unit Tools operates as a client-side application. All conversion calculations are performed locally in your browser, and we do not collect, store, or transmit any numerical values or conversion data you enter into our tools.
Information We Collect
Information You Provide Directly
✓ What We DON'T Collect:
- CSS values or numbers you enter into conversion tools
- Your conversion results or calculation history
- Personal identification information
- Email addresses or contact information
- User accounts or profiles
Since all conversions happen in your browser using JavaScript, your input data never leaves your device. We have no access to what you're converting or the results you generate.
Automatically Collected Information
We may collect basic, anonymized analytics information to understand how our tools are used and to improve user experience. This information is aggregated and cannot be used to identify individual users:
- Page views and tool usage: Which tools are most popular and how frequently they're used (anonymized)
- Browser information: Type and version for compatibility optimization (e.g., "Chrome 119" or "Firefox 118")
- Device type: Desktop, tablet, or mobile for responsive design improvements
- General location: Country-level geographic location for localization purposes
- Performance metrics: Page load times and user interaction patterns to optimize the site
How We Use Information
Any information we collect is used solely to improve CSS Unit Tools and provide a better experience for all users. Specifically, we use data to:
🔧 Improve Tools
Understand which conversion tools are most valuable and identify opportunities for new features
⚡ Optimize Performance
Enhance website speed and responsiveness across different browsers and devices
🐛 Fix Issues
Identify and resolve technical problems to ensure reliable service
🌍 Enhance Localization
Improve multi-language support and cultural adaptations for global users
Data Storage and Security
Important: CSS Unit Tools processes all conversions locally in your browser using JavaScript. No conversion data is sent to our servers or stored anywhere outside your device.
Any preferences or customizations you make (such as setting a custom root font size for REM conversions) are stored locally in your browser's localStorage. This data remains on your device and is never transmitted to our servers.
Security Measures
- • HTTPS encryption for all website traffic
- • No server-side storage of user conversion data
- • Regular security audits and updates
- • Minimal data collection principle
Third-Party Services
We may use third-party analytics services (such as Google Analytics) to understand website usage patterns. These services may collect information about your visit to help us improve our tools. Important points about third-party services:
- We only work with services that respect user privacy and offer data anonymization
- No conversion data or personal information is shared with third parties
- Third-party cookies can be blocked using your browser settings
- We regularly review and update our third-party partnerships to ensure privacy compliance
Your Rights and Control
Since we process minimal data and most functionality is client-side, you maintain complete control over your information:
Browser Controls
- • Clear localStorage to remove saved preferences
- • Disable JavaScript to prevent analytics collection
- • Use private/incognito mode for anonymous browsing
- • Block third-party cookies in browser settings
Your Data Rights
- • No personal data to access or download
- • No user accounts to delete
- • Full transparency in data collection practices
- • Opt-out available for analytics tracking
International Users & Compliance
CSS Unit Tools is accessible worldwide and we respect data protection regulations in all jurisdictions where our users are located:
🇪🇺 GDPR Compliance (EU Users)
Our minimal data collection approach ensures full compliance with European General Data Protection Regulation requirements.
🇺🇸 CCPA Compliance (California Users)
We adhere to California Consumer Privacy Act standards and do not sell or share personal information.
🌍 Global Privacy Standards
We follow international privacy best practices and adapt to emerging privacy regulations worldwide.
Children's Privacy
CSS Unit Tools is designed for web developers and professionals. While we don't specifically target children, our tools may be used in educational contexts. We do not knowingly collect personal information from children under 13 years of age. Since we don't collect personal data from any users, this protection extends to all users regardless of age.
Changes to This Privacy Policy
We may update this Privacy Policy periodically to reflect changes in our practices, technology, or legal requirements. When we make changes:
- The "Last updated" date at the top will be revised
- Significant changes will be prominently displayed on our website
- We will maintain the same privacy-first principles
- Your continued use constitutes acceptance of any updates
We encourage you to review this Privacy Policy periodically to stay informed about how we protect your privacy.