Privacy
Short, because there is not much to describe.
What this site stores about you
Nothing. There is no account, no sign in, no cookie, and nothing in local or session storage. No analytics, no advertising, no tracking of any kind, and nothing loaded into these pages from any other company's servers.
There is no form on this site either, which is why there is no section here about what a form collects. If you write to the address below, that message is an email between you and Dalaric and it is handled like any other: read, answered, and kept only while the correspondence is useful.
The address you type into the check
It is used to make the three requests described on the about page, and it is put into the address of the result page so that you can send that link to whoever looks after the website. That is the only reason it is in the address bar.
Because it is in the address, it appears in the request logs that any web host keeps, in this case Cloudflare's, alongside your network address. Those are ordinary server logs kept for security and for operating the service. Nothing is stored against a name, no profile is built, and no record of what you checked is kept anywhere else.
Result pages are sent with instructions not to store them, so a shared or public browser does not keep a copy for the next person.
What is read from the site you check
Up to 320 bytes of each of three responses. It is examined to tell a git file from a web page, and is then discarded. It is never displayed, never logged and never sent anywhere. See the about page for exactly which addresses are requested.
Who runs this
Dalaric Limited, registered in England and Wales, company number 06995683, registered office 4 South Terrace, South Street, Dorchester, Dorset DT1 1DE, is the data controller for anything described above.
Write to info@dalaric.com, which is read by a person.
You have the rights the UK General Data Protection Regulation gives you, including the right to complain to the Information Commissioner's Office. Given that this site holds no account and builds no profile, in practice there is very little here to exercise them against, which is the intention.
Changes
If what this site does with data changes, this page changes with it. It is short enough to read again.