Cookie policy

Last updated: 14 November 2026

What cookies are

Cookies are small files that a website stores in your browser to remember information about your visit. Some are essential for the website to work; others are used to measure usage or show advertising, and those are only set if you give your permission.

Which cookies SergioLearns uses

Technical (always active). They are necessary for the website to work and do not require consent:

  • Remembering the language you chose (Polylang).
  • Storing your cookie choice (Google’s consent message keeps it in cookies such as FCCDCF).

Analytics (only with your permission). Google Analytics uses cookies such as _ga to count visits and understand, in aggregate, how the website is used. They can last up to two years.

Advertising (only with your permission). If the website shows Google AdSense ads, Google and its partners may use cookies (for example, from the doubleclick.net and google.com domains) to show ads, limit how often you see the same one and, if you accept, personalise them based on your visits to this and other websites. You can see how Google uses information from sites or apps that use its services and how Google uses cookies in advertising. To turn off personalised ads, use My Ad Center (Google) or Your Online Choices and aboutads.info (other vendors); more details in the privacy policy.

Leo (technical). It keeps the conversation in your browser’s session storage during your visit (deleted when you close the tab) and remembers whether you prefer the light or dark look. It does not use cookies; only what you ask leaves your browser, and it is sent to Mistral AI (France, European Union) to generate the answer (see the privacy policy).

Local storage used by the tools (technical). The coding environment saves in your browser the code you write (in the free playgrounds, also your files and the input), how many times you have evaluated each exercise and your display preferences (text size and panel width), so that you do not lose your work if you reload the page; the mock exams keep the exam questions during your visit (session storage, which is deleted when you close the tab). They are not tracking cookies: they never leave your browser, are not sent to the website and cannot identify you. You can delete them at any time by clearing this site’s data in your browser.

Sergio’s log and the FP1 pack. Signing up to Sergio’s log or downloading the pack does not set any cookies. The Sergio’s log emails, which I send with Brevo, may include an invisible image that counts whether they are opened (more details in the privacy policy).

How to accept, reject or change your choice

If you visit from the European Union, the European Economic Area, the United Kingdom or Switzerland, Google’s consent message (a Google-certified platform compatible with IAB Europe’s TCF framework) lets you consent, not consent or choose by purpose and by vendor. Until you choose, Google Analytics and AdSense run in denied consent mode: they do not store analytics or advertising cookies. You can change your mind at any time with the Cookie settings button in the footer of every page.

You can also block or delete cookies from your browser settings (Chrome, Firefox, Safari or Edge), although some parts of the website may stop working properly.

More information

For any questions about this policy, write to me at sergio@sergiolearns.com. The rest of the information about how your data is processed is in the privacy policy.