Cookie policy

The count is zero

This site does not set, read or rely on cookies. It also does not use localStorage, sessionStorage, IndexedDB, browser fingerprinting, tracking pixels or device identifiers. Nothing is stored in your browser by us, which means there is nothing for you to accept or reject, and no consent banner is legally required.

Why there are no cookies

Most sites need cookies for one of three reasons: to remember who you are when you log in, to count visitors, or to serve targeted advertising. This site has no accounts to log in to, runs no visitor statistics, and carries no advertising. With none of those present, a cookie would serve no purpose — so there is not one.

That is also why this site can honestly describe its privacy policy in a few minutes of reading rather than a few hours.

What replaces the cookie, and what it does not do

Some features still need to remember your choices — but they do it without storage. When you change a calculator input, the value is written into the page address as a query parameter, so the browser can reconstruct the state when you reload or share the link. Nothing is written to your device, and the value disappears when you close the tab unless you keep the URL.

The trade-off is worth stating plainly: those parameters are visible in the address bar, they land in your browser history, and they travel with the link if you share it. A cookie would have been slightly more discreet. If you have entered figures you would rather not leave behind, clear the parameters before sharing the link or clear your browser history afterwards.

Third-party requests: also zero

A page can avoid cookies and still leak information to other companies through embedded images, fonts or scripts. This site does not. Fonts are hosted here, images are hosted here, the JavaScript is hosted here, and the site's security policy actively blocks the browser from loading scripts, styles or frames from other domains. Very few sites can make that claim, and it is enforced rather than merely stated.

Server-side information

When your browser requests a page, the request naturally includes your IP address, your browser's user-agent string and the page you asked for — that is how the web works, and no site can prevent it. Our application does not write those requests to a log. The hosting provider, [FILL: hosting provider and processing region], may keep standard connection records for security and reliability under its own policy, as almost all hosts do.

The contact form's anti-spam counter uses an IP address in the server's memory for one hour to limit how many messages one connection can send. It is not stored, not shared, and not linked to anything else. See the privacy policy for the full detail.

What to do in your own browser

You do not need to configure anything for this site. If you want to know what other sites are storing, your browser's developer tools will show it: open the Application or Storage panel on any site, look at the Cookies section, and you will see this one is empty. Blocking cookies entirely in your browser settings will not break anything here — no feature on this site depends on them.

If advertising is ever added

Display advertising is the change that would end this position, because ad networks use cookies and third-party requests as a matter of course. If advertising is introduced, this page will be rewritten before the first ad script runs, a consent mechanism will be added where the law requires one, and the change will be noted here rather than made quietly. The ads.txt file in the site's root is a placeholder for that possibility and does not indicate that any advertising is running today.

Questions

If you believe this site has stored something in your browser, we want to know, because it would mean one of the statements above is wrong. Write to [FILL: real contact email] with the page address and what you observed.