Privacy policy

Nothing about you while you read. There are no accounts or logins, no analytics, no advertising and no error tracking, and the site sets no cookies of its own. Our host adds a script that would set cookies, and the site blocks it; see What others see.

• Your theme choice. If you pick Light or Dark in the theme menu, the choice is kept in your own browser (local storage) so the next page uses it. It never leaves your device. With System, nothing is kept.
• Search runs in your browser: the site sends it parts of a search index, and what you type is not sent as text to us or to anyone else.

If you send feedback, the site receives what you chose it is about and your message (up to 500 characters). It is emailed to the person who runs this site and is not stored on the website. The form doesn’t ask for your name or email address, so there is no way to reply to you; please leave personal details out of the message.

So that no one can flood the form, the server keeps, for each sender, a keyed hash of their IP address (a code worked out from it, not the address itself) with the times they sent feedback. Entries older than a day are no longer used, and are deleted the next time anyone uses the form.

• Our host, GoDaddy, runs the web server. Like any web server, it receives your IP address and the addresses of the pages you open. GoDaddy’s privacy notice covers what it keeps.
• GoDaddy also adds its own script to every page, for monitoring performance (loaded from img1.wsimg.com). The site’s security policy (its Content-Security-Policy) stops that script from running in your browser, so it sets none of its three cookies (_tccl_visitor, _tccl_visit and _scc_session) and sends GoDaddy (secureserver.net) no measurements. We did not add it; its own note says opting out goes through GoDaddy’s hosting support.
• Lesson illustrations come from ImageKit (ik.imagekit.io), an image service. Your browser loads them from ImageKit, which sees your IP address as any site serving an image does. See ImageKit’s privacy policy.
• Share buttons are plain links. Nothing from WhatsApp, X, LinkedIn or Telegram loads on this site; they are involved only when you tap one.

Every lesson can be read with cookies and scripts blocked. Search, the quiz and the theme menu need JavaScript, but none of them needs a cookie. A content blocker such as Privacy Badger stops the host’s script.

For privacy questions, use the feedback form (choose “Report something”) or open an issue on our GitHub repository.