Privacy
We collect nothing.
No cookies, no analytics, no tracking and no fingerprinting. Here is exactly what that means, in plain words, and how it's enforced.
- No cookiesNot for tracking, not for preferences, not for anything.
- No analytics or tracking pixelsNo Google Analytics, no ad tags, no heatmaps, no session recording.
- No fingerprintingNo scripts that read your device, fonts, screen or browser details.
- No third-party codeNo outside scripts, fonts, embeds, videos or social buttons. Every file comes from this site.
- Calculators run on your deviceWhat you type stays in your browser tab and disappears when you leave.
- No forms or sign-upsNo email capture, no accounts, no contact forms, no pop-ups.
What this site does
This is a static website: plain HTML pages, one stylesheet, our own fonts and images, and two small JavaScript files that power the calculators. When you visit a page, your browser downloads those files from this site and that's it.
Calculators
The calculators do their math inside your browser. They don't send what you type anywhere, don't save it in cookies, local storage or anywhere else, and forget it when you close or reload the page. Checklists you tick are not saved either; use the Print button if you want a copy.
How it's enforced
Every page is served with a strict Content Security Policy, a browser security rule that only allows scripts, styles, fonts and images from this site and blocks the page from connecting to any other server (connect-src 'none'). Even if someone tried to add a tracking script, your browser would refuse to load it. We also send a Permissions Policy that turns off the camera, microphone, location, payment, USB and other device features, and opts out of browser ad-interest features (the Topics API).
Before publishing, we test every page in a headless browser and confirm it makes zero requests to any other website and sets zero cookies.
Our web host
The site is hosted on Cloudflare Pages. Like any web host, Cloudflare has to process basic connection details, such as your IP address and the page requested, to deliver the site and protect it from attacks. We haven't turned on Cloudflare's analytics or any other analytics, and we don't receive personal information about visitors.
Links to Etsy
Template links take you to Etsy, which has its own privacy policy and cookies. When you click one, your browser tells Etsy only the address of this site, not the page you were on or anything you typed. Nothing is shared with Etsy before you click.
Questions
You can send us a message through our Etsy shop. This page was last updated on November 9, 2026.