1. Data Collection

Perf Lens is a completely client-side application that runs in your browser. We do not collect, store, or transmit any of your code or test data to our servers.

Your code runs only in your browser
Test results are stored only in your browser's local storage
We do not access or collect your test data

2. Local Storage

We use browser LocalStorage to save:

Test history
User preferences (theme, language settings)
Code templates

All data is stored on your device, and you can clear it at any time by clearing your browser data.

3. Analytics and Monitoring

We use Vercel Analytics and Speed Insights to collect anonymous usage statistics, including:

Page views
Performance metrics (Core Web Vitals)
Geographic location (country/region level)
Device type and browser information

This data is anonymous and does not contain any personally identifiable information.

4. Cookies

We use essential cookies to provide basic functionality:

Theme preference (dark/light mode)
Language settings
Session management

We do not use third-party advertising cookies or tracking cookies.

5. Third-Party Services

Perf Lens uses the following third-party services:

Vercel: Hosting service provider
Google Fonts: Font loading (optional)

These services have their own privacy policies, and we recommend reviewing them.

6. Data Security

Since all code and test data are processed in your browser, your data security is protected by your device and browser. We recommend:

Keep your browser updated to the latest version
Use strong passwords to protect your device
Do not save sensitive code on public devices

7. Your Rights

You have the right to:

Clear locally stored data at any time
Disable cookies (may affect functionality)
Opt out of analytics tracking
Contact us about data processing concerns

8. Policy Updates

We may update this privacy policy from time to time. Updated policies will be posted on this page with the last updated date noted.

9. Contact Us

If you have any questions or concerns about this privacy policy, please contact us:

GitHub Issues: https://github.com/aronhoo/perf-lens

Privacy Policy