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Home / Privacy Policy

Privacy Policy

Last updated: 3 July 2026

ddhhmmss.com is designed to be private by default. This page explains, in plain language, what data is and isn't handled when you use the site.

What we don't collect

  • We do not require accounts or sign-ups, and we do not collect names, email addresses, or any personal profile data through the site.
  • We do not use advertising, advertising cookies, tracking pixels, or fingerprinting.
  • We do not send your inputs anywhere: every tool (clocks, timers, calculators, converters) runs entirely in your browser. Dates, birthdays, work hours and locations you type are processed on your device and never transmitted to us.

What stays on your device

  • Preferences — your theme (dark/light), time format (12/24-hour), and saved world-clock cities are stored in your browser's localStorage. They never leave your device, and you can clear them anytime via your browser settings.
  • Offline cache — a service worker caches pages and assets locally so the site loads fast and works offline. This cache lives only in your browser.

Hosting & technical data

The site is served by Cloudflare. Like any web host, Cloudflare processes technical request data (such as IP address and browser user-agent) transiently to deliver pages and protect against abuse. This is governed by Cloudflare's privacy policy. We may review aggregate, cookieless traffic statistics (such as page-view counts) that do not identify individual visitors; we do not use cookie-based analytics.

Third parties

Pages load no third-party scripts, fonts, or trackers — all assets are self-hosted. External links (for example, in this policy) lead to sites with their own privacy practices.

If you email us

If you contact [email protected], we use your email address and message only to respond to you. We don't add you to mailing lists or share your address with anyone.

Children

The site is suitable for general audiences and collects no personal data from anyone, including children.

Changes to this policy

If the site gains features that change how data is handled (for example, optional accounts or cloud sync), this policy will be updated first, with the "Last updated" date revised.

Contact

Questions about privacy? Email [email protected].