About

Dayeku is a growing collection of small tools for everyday development. Most compute locally in your browser. IP and cron tools send input to this site's server; each page states where processing takes place.

How it is built

• Anything that can run in the browser (text munging, encoding, formatting, hashing) runs locally. Your input is not sent to the server and never enters our logs.
• The very few tools that require server-side computation (cron parsing, CIDR math) send the minimum input over HTTPS. The request is used only for that response — nothing is stored long-term.
• The site loads no external CDNs, external fonts, external icon libraries or third-party tracking scripts. The built version can be served fully offline.
• All pages are rendered server-side; the content and SEO metadata are in the HTML. JavaScript only powers interaction — the pages still read cleanly with JS off.

About the content

Every tool page has hand-written notes and FAQs. We avoid marketing lines like “the most accurate” or “realtime and authoritative” unless the tool actually is that. If you spot a mistake, or want a tool added, please get in touch.

How it grows

Tools live in a single registry. Adding a new one is: add a manifest, add translations, add a view, add a script. No changes to the home page, category page, search or sitemap. That is what keeps the site manageable at 30 or 300 tools.