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Privacy Policy

Last updated: 2026

1. Overview

SectionLib ("we", "us", "our") is committed to protecting your privacy. This Privacy Policy explains how we handle information when you use our website at sectionlib.com.

Summary: We do not collect, store, or share personal data. All engineering calculators and tools on this website run entirely in your browser. No calculation inputs or results are transmitted to any server.

2. Information We Do Not Collect

  • We do not require registration or accounts
  • We do not collect names, email addresses, or contact details (unless you voluntarily submit the contact form)
  • We do not store calculation inputs, outputs, or section data queries
  • We do not use tracking pixels, fingerprinting, or behavioural advertising
  • We do not sell or share data with third parties for commercial purposes

3. localStorage (Client-Side Only)

The website uses your browser's localStorage to save your preferences locally on your device:

  • Theme preference (dark/light mode)
  • Favorite sections you have bookmarked
  • Recently viewed sections

This data is stored entirely on your device and never transmitted to our servers. You can clear it at any time via your browser settings or by using the "Clear" buttons within the site.

4. Contact Form

If you use the contact form, the information you provide (name, email, message) is transmitted securely for the sole purpose of responding to your enquiry. We do not add you to any mailing list without explicit consent.

5. Analytics

We may use privacy-respecting analytics (such as Plausible Analytics, which does not use cookies or collect personal data) to understand aggregate traffic patterns. No personal data is collected through this process.

6. Third-Party Services

The website loads fonts from Google Fonts. Google may log the font request (which includes your IP address) according to Google's own privacy policy. No other third-party scripts are loaded.

7. Cookies

We do not use cookies for tracking or advertising. The only browser storage used is localStorage as described in Section 3 above.

8. Your Rights

Since we do not collect personal data, there is no personal data to access, correct, or delete from our systems. To clear locally stored preferences, use your browser's developer tools or Settings → Clear Site Data.

9. Changes to This Policy

We may update this Privacy Policy. Changes will be reflected by updating the "Last updated" date at the top of this page.

10. Contact

If you have questions about this Privacy Policy, please use the contact form.