Privacy Policy — Circuit Diagram Maker

1. Introduction

This privacy policy explains how Circuit Diagram Maker ("we", "us", "our") collects, uses, and protects information when you use our free, browser-based circuit diagram maker at circuit-diagram.org. We are committed to protecting your privacy and being transparent about our data practices.

2. Information We Collect

Circuit Diagram Maker is designed with privacy-first principles. Here's what we do and don't collect:

Circuit diagrams and designs: All diagrams you create in the circuit diagram maker are stored exclusively in your browser's local storage. We never upload, access, or store your circuit schematics on our servers.
Analytics data: We use privacy-respecting analytics to understand how users interact with our circuit diagram maker. This includes page views, session duration, and general geographic region (country-level). No personally identifiable information is collected.
Contact form data: If you submit our contact form, we collect your name, email address, and message content solely to respond to your inquiry.

3. How We Use Your Information

Any data collected is used exclusively to:

Improve the performance and usability of Circuit Diagram Maker
Monitor website uptime, error rates, and page load speeds
Respond to support inquiries submitted through our contact form
Understand which features of the circuit diagram maker are most used to guide development priorities

4. Cookies & Local Storage

Circuit Diagram Maker uses browser local storage to save your circuit diagrams, editor preferences, and session state. This data remains entirely on your device and is never transmitted to our servers. We may use essential cookies for basic analytics functionality.

5. Third-Party Services

We use the following third-party services:

Google Fonts: We load the Inter and JetBrains Mono typefaces from Google's CDN. Google's privacy policy applies to font loading requests.
Analytics: We use privacy-respecting analytics tools that do not use cookies and comply with GDPR without requiring user consent.

We do not sell, rent, or share your personal information with any third parties for marketing purposes.

6. Data Security

Our website is served over HTTPS to ensure encrypted data transmission. Since circuit diagrams are stored locally in your browser, your designs are never exposed to network-level security risks. We follow industry best practices for securing our web infrastructure.

7. Your Rights (GDPR & CCPA)

If you are located in the European Economic Area, United Kingdom, or California, you have the right to:

Access any personal data we hold about you
Request deletion of your personal data
Object to processing of your personal data
Request portability of your personal data

To exercise any of these rights, please contact us at privacy@circuit-diagram.org.

8. Changes to This Policy

We may update this privacy policy from time to time. When we make material changes, we will update the "Last updated" date at the top of this page. We encourage you to review this privacy policy periodically to stay informed about how Circuit Diagram Maker protects your information.