Privacy policy
This page explains what data the notebook collects and what it does not. The short version: no accounts, no forms, no stored calculations, and analytics limited to an aggregate visitor counter.
What is collected
The site sets no login cookies and has no comment system. The calculator runs entirely in the browser and its inputs are not transmitted or stored. Server logs may record standard request information such as IP address, user agent and requested URL, which is ordinary for any website and is used for security and availability.
An aggregate analytics script is present on every page. It records visits and page views in aggregate and does not build a profile of an individual reader. Advertising units load a small script that fetches a link target; it does not read page content or calculator inputs.
- No accounts, no forms, no stored calculations.
- Standard server logs for security and availability.
- Analytics is aggregate, not individual.
Third parties
Two third-party scripts may run: the analytics counter and the advertising unit. Both are loaded from their own domains and are subject to their own policies. Blocking them does not affect the articles or the calculator, which is one reason the site is built as static HTML.
The vendor archive page loads a directory script that reads an embedded data file. It makes no network request for product data and stores nothing in the browser.
- Analytics and advertising are the only third-party scripts.
- Blocking them leaves the content fully usable.
- The vendor directory renders from an embedded file.
Your choices
You can block scripts, clear cookies and use a private window without losing access to any article. If you correspond with the site, your message is kept only as long as needed to handle the matter it concerns.
Requests about data can be sent through the contact route on the about page. Because the site does not maintain user records, most requests will receive the same answer: there is nothing stored to retrieve or delete.
- Scripts can be blocked without losing content.
- Correspondence is kept only as long as needed.
- No user records exist to retrieve.