Privacy Policy
Last updated: October 8, 2026
This policy covers quiltbackingcalc.com. For privacy questions, email contact@quiltbackingcalc.com.
Calculator inputs and shared links
The calculation runs in your browser. We do not require an account or save your measurements to a calculator database. All settings appear in the URL. Your browser history, anyone you share the link with, and hosting request logs may contain that URL. Do not enter personal information into calculator fields.
Hosting and technical information
The site is hosted by Cloudflare. When you visit, the hosting provider may process technical information such as your IP address, requested URL, browser details, and request times to deliver and secure the site. See Cloudflare’s Privacy Policy for its practices.
Usage measurement
Cloudflare Web Analytics measures visits and page performance without analytics cookies or persistent visitor identifiers. See Cloudflare’s Web Analytics explanation for details.
We also count whether a visitor changes an input to produce a valid backing plan, successfully copies a result, or opens the print dialog with a valid plan. Each action is counted at most once per page load. Opening the print dialog does not confirm that a page was printed. These first-party requests contain only the calculator name, action name, and an optional flag identifying our tests. They do not include measurements, copied text, page addresses, names, or visitor identifiers.
Our Cloudflare D1 database stores aggregate counts by UTC date, calculator, action, and test or production traffic. It does not store individual event records, IP addresses, or browser details. We do not set measurement cookies or create visitor or session IDs. These totals measure actions, not unique people; automated traffic and repeat visits can still affect them. Our staff can use a test link or a temporary session-storage flag to separate quality checks from production totals. Ordinary visits do not create a storage flag. Our first-party action counter skips browsers that expose a Global Privacy Control or Do Not Track signal.
Cookies and Google AdSense
This version does not load Google AdSense or advertising cookies. Ad spaces remain hidden until advertising is enabled.
If Google AdSense is enabled later, Google and other third-party vendors may use cookies to serve ads based on previous visits to this site or other websites. Google’s advertising cookies may let Google and its partners personalize ads based on those visits. You can manage Google’s personalized advertising in My Ad Center and learn about other vendors’ choices at AboutAds. Any required consent controls will be added before advertising technology is enabled, and this policy will be updated to reflect the actual setup.
Affiliate links
There are no affiliate links in this version. If added, they will be marked. Affiliate merchants or networks may use referral parameters or cookies to attribute a purchase, and their own privacy policies will apply when you visit their sites. We may receive a commission at no additional cost to you.
Contact emails
If you email us, we receive your address and the content you send and use them to handle your message. Email is processed by the mail providers involved. Do not send sensitive information. You may email us to request deletion of correspondence, subject to any records we must retain.
Your choices and policy changes
You can decline to share a calculator link, manage cookies through your browser, or contact us about access or deletion requests where applicable. We will update this page when the site’s data practices change.