Privacy
Updated October 11, 2026.
Your calculation stays in your browser
The calculator processes stitch counts, fabric dimensions and margins locally. It does not send those values to our analytics endpoint. It uses no cookies, local storage, account or personal identifier.
Calculating places the inputs after the # in your address bar. That fragment is not included in HTTP requests to our server. A copied link contains those inputs, so anyone you share it with can read and restore them. Your browser history may retain the link.
Small aggregate usage counts
After you calculate or save a plan, the site sends an event name and a test-traffic flag to an endpoint on this domain. We store daily totals for those actions, separated from test traffic. On each new event, we delete totals older than 90 days; if the site receives no events, that cleanup waits until the next event. We do not store your calculator inputs, IP address, user agent or a visitor identifier in that database. These totals count actions, not unique people.
The site skips these events when your browser sends Do Not Track or Global Privacy Control. There is no Google Analytics, Tag Manager, advertising pixel or third-party analytics script.
Hosting and other links
Cloudflare hosts the site and necessarily processes connection information such as IP addresses to deliver and protect requests. This differs from the small event database described above. We do not enable Worker request logging. Cloudflare’s own handling is described in its privacy policy.
Fonts are served from this site. Downloads are generated locally. External guides and our portfolio contact form have their own privacy terms. We do not currently display advertisements or affiliate links.
For privacy questions, use the portfolio contact form and identify this website.