Local-First & Transparent

Privacy Policy

Last updated: October 2026

1. Core Privacy Pledge

At Zevylo, privacy is not an afterthought or marketing disclaimer—it is fundamental to our software design. The vast majority of utilities on Zevylo run entirely within your web browser using client-side JavaScript, Web APIs, and Web Crypto.

Key Guarantee: Your passwords, tokens, JSON structures, hashes, and text snippets are processed directly on your device. We do not transmit, log, record, or store them on any server.

2. Information We Do Not Collect

We do not collect:

Any tool input values (passwords, JWT tokens, source code, text diff inputs)
Any tool output values (generated hashes, QR code payloads, UUIDs)
Personal identifying information unless you explicitly submit our contact form
Biometric or payment data

3. Local Storage and Preferences

Zevylo uses your browser's localStorage purely to remember your theme preference (Light or Dark mode) and optional tool presets (such as recent UTM templates). This information remains stored strictly on your local browser and is never uploaded.

4. Third-Party Requests

Zevylo does not sell, lease, or distribute your information to data brokers, ad networks, or external parties. Assets (such as fonts and icons) are bundled locally wherever possible to eliminate unnecessary third-party telemetry.

5. Contact Information

If you have questions regarding our privacy practices or wish to suggest security enhancements, please reach out via our contact page.