Privacy

We use Google Analytics to count how many people visit each page and how often each worksheet is downloaded, along with a short list of interactions like opening a printable or changing a setting. That is the whole reason it is here: it tells us which sheets are worth building more of.

No name, email address or account, because there is no login and we do not ask for one. Nothing you type. Nothing from a worksheet, including the problems and the answers. No advertising identifier and no precise location.

Everything we do send is chosen from a short fixed list kept in our code. That list has no room for the number that generates a worksheet, for the settings object behind a sheet, for an error message or a server status code, or for any value we have not written down in advance. If something is not on the list, it is not sent, and our build fails if anyone tries to add one.

The page you are on, and, when you download a sheet, which sheet it was and how it was set up, for example portrait or landscape. When a download fails we record only that it failed and one of three general reasons, never the underlying message.

Before Google Analytics is allowed to run, we permanently switch off all four of its storage permissions: analytics storage, advertising storage, advertising user data and advertising personalization. Nothing in the site can switch them back on.

The practical result is that Google Analytics sets no cookies here and gives you no lasting identifier, so we cannot tell whether you have visited before. That is also why this site has no cookie banner: we never ask to store anything, so there is nothing for you to accept or decline.

Google Analytics runs on Google servers, so a request still goes to Google for each page and each interaction we measure. Google receives your IP address and works out an approximate location from it, along with your browser and device type.

We cannot change that. This measurement is not anonymous, and we will not tell you otherwise. Turning storage off means we cannot recognise you between visits. It does not mean that nothing about you reaches Google.

We cannot tell how many separate people visit, or who comes back. Figures for users, returning visitors and sessions are incomplete or estimated, and we do not treat them as fact or make decisions from them. We work from totals, and totals are all we need to decide which worksheets to build next.

There is no advertising on this site and no advertising measurement. We do not use Google Signals, we do not enable personalized advertising or user-provided data collection, and this site is not linked to any Google advertising product.

Analytics is allowed to fail. If Google is blocked, unreachable or switched off in your browser, every page, every worksheet and every download works exactly the same. Nothing on this site waits for analytics, and nothing breaks without it.