privacy

Privacy policy.

Short version: this site doesn't ask who you are, doesn't run analytics, and stores eight notes if you choose to leave a tune. It does show ads from Google, and those use cookies.

Last updated 26 September 2026. This policy covers zxa233.com and its pages. Tunepick at tunepick.zxa233.com is a separate app.

Who runs this site

zxa233.com is a personal website run by xz, a developer in Tokyo, Japan. You can reach me through the contact page.

Advertising and cookies

This site uses Google AdSense to show ads. Google and its partners are third-party vendors that use cookies to serve ads based on your previous visits to this website and other websites.

Where the law requires it (for example in the European Economic Area, the UK and Switzerland), visitors are asked for consent through a Google consent message before personalised ads are shown. If you decline, Google may still show non-personalised ads, which use cookies for things like frequency capping and fraud prevention.

What this site stores itself

The melody guestbook

If you leave a tune on the home page, the site stores: the eight notes you chose, the time you left it, and the two-letter country code that Cloudflare attaches to the request (for example JP). It never stores your name, your IP address or your city. Tunes are shown publicly to other visitors.

To stop the same person posting many tunes in a row, the site keeps a one-way hash of your IP address for 60 seconds after you post, then deletes it automatically. The hash can't be turned back into your address.

No analytics, no accounts

There is no analytics script, no sign-up and no newsletter on this site. The fonts are served from this domain, so loading a page doesn't contact a font service.

Hosting logs

The site is hosted on Cloudflare. Like any web host, Cloudflare processes technical data such as IP addresses to deliver pages and protect the site against abuse. See Cloudflare's privacy policy for details.

Links to other sites

Pages here link to other sites, such as GitHub and Tunepick. Those sites have their own privacy policies.

Children

This site isn't directed at children under 13 and doesn't knowingly collect information from them.

Your choices

Changes

If this policy changes, the new version will be posted on this page with a new date at the top.