Privacy policy

Google Analytics 4 runs by default to show how the site is used. You can turn it off at any time, and it stays off when your browser sends a Global Privacy Control or Do Not Track signal.

While it is on, it records:

• pages and sections viewed;
• links clicked, such as a project or a contact channel;
• approximate location (country and city, derived from your IP address);
• device type, operating system and browser;
• the language version you read and whether the site is shown in light or dark mode;
• the site that referred you.

Your answer to the analytics notice is kept in your browser’s local storage, under the key “rafer.consent”, so the notice isn’t shown again. If you pick a language or a light or dark theme, those choices are kept the same way, under “rafer.lang” and “rafer.theme”. None of them ever leaves your device.

To understand which content is useful and to improve the site. The legal basis is legitimate interest (LGPD, article 7, IX): the data is limited to how the site is used, it is never used to identify you, and you can opt out at any time.

The data is not used for advertising, is not sold, and is not shared for marketing. Google’s advertising features are turned off.

“_ga” and “_ga_<ID>” are set by Google Analytics to tell visits apart. They are never set if you opt out or your browser sends a privacy signal, and opting out deletes them. Otherwise they last up to 2 years, or until you clear them.

Google LLC provides Google Analytics and may process the data on servers outside Brazil, including in the United States, under its own data protection terms.

Analytics data is kept no longer than Google Analytics’ retention period, which is 14 months at most.

The web server that delivers this site is configured not to keep access logs. As on any website, your IP address is used to deliver the pages, but this site doesn’t store it.

Links to GitHub, LinkedIn, WhatsApp, YouTube, Instagram, chess.com and other services take you to sites with their own privacy policies.

Under the LGPD you can ask whether data about you is processed, and to access, correct or delete it. You can also object to this processing at any time.

To opt out, use “Privacy choices” below or at the bottom of any page and choose “No thanks”. Analytics stops right away and its cookies are deleted.

For any other request, email contact@rafer.dev. You can also file a complaint with Brazil’s data protection authority (ANPD).

If this policy changes, the date at the top of this page is updated.