Privacy Policy
yutils does not send your input data to any server. This document explains exactly what is processed and which external services are involved.
Last updated: 2026-05-15
yutils is a free, in-browser tool site. This policy exists to transparently document what data yutils handles, how it is handled, and which external services it relies on.
1. Tool input data
Every tool on yutils — JSON formatter, Base64 encoder, JWT decoder, and the rest — processes your input entirely in client-side JavaScript inside your browser. The text, files, or images you provide are not transmitted to yutils servers or to third parties. For aggregate, anonymous site-traffic statistics, see section 6 (Analytics) of this document.
2. Browser localStorage
Your settings — selected theme, dark mode, favorite tools, recently used tools, sidebar width, keyboard shortcut dialog state, D-day list, and similar preferences — are stored in your browser's localStorage. This data stays on your device, does not sync across devices, and can be wiped at any time via the 'Reset' button on the /settings page.
3. Cookies
yutils' own core features (themes, favorites, recently used tools, and so on) use localStorage rather than cookies. However, Google Analytics 4 (GA4) sets cookies like `_ga` and `_ga_<measurement-id>` for site analytics — a 2-year lifespan, anonymous user identification. If advertising is introduced later, ad-identifier cookies may be added; this page will be updated at that point.
4. External services
The site is hosted on Cloudflare Workers. At Cloudflare's infrastructure layer, standard access logs (IP address, User-Agent, request timestamp) may be retained for security and traffic-analysis purposes. The source code is maintained in the public GitHub repository at github.com/pplenty/yutils.
5. Advertising (planned)
Google AdSense advertising may be introduced in the future to cover hosting costs. When it is, Google's advertising-identifier cookies will be set, and you can opt out of personalized ads at https://adssettings.google.com/. This page will be updated when ads actually go live.
6. Analytics
yutils uses Google Analytics 4 (GA4) for site operations, content improvement, and traffic analysis. Aggregate, anonymous metrics — page views, sessions, device types, and country-level location — are sent to Google, with GA4's IP anonymization applied by default. The data you enter into the tools is not sent to GA either; GA only tracks site-level operating metrics, such as how often each tool page is visited. To opt out, install Google's official opt-out browser add-on at https://tools.google.com/dlpage/gaoptout/.
7. Children's data
yutils is not directed at children under 13, and no identifying information is intentionally collected from them.
8. Your rights
Because yutils does not retain tool inputs or outputs on any server, traditional data-access or data-deletion request flows don't apply. Settings stored in localStorage can be cleared by you directly via the browser's storage controls or the 'Reset' button on /settings.
9. Changes to this policy
When this policy changes in a substantive way, the 'Last updated' date above is bumped, and a notice may be posted at the top of the site.
10. Contact
For privacy-related questions, please open a GitHub issue at github.com/pplenty/yutils/issues or email the maintainer.