Privacy Policy

This policy explains what data DevBR Kit processes, why and for how long, under Brazil's General Data Protection Law (LGPD, Law No. 13,709/2018).

Data controller

The data controller is Rafael Lima, who runs DevBR Kit, a developer based in Belo Horizonte, Minas Gerais, Brazil. Contact: hello@4devsbr.com.

Data generated and validated in the tools

Every value you generate (CPF, CNPJ, test cards, fictitious people, passwords and so on) and everything you paste into the validators is processed only in your browser, by JavaScript. This data is never sent to our server or to third parties.

Local storage (localStorage)

We store only two things in your browser's localStorage: your language preference and the fact that you dismissed the site notice. They stay on your device and can be cleared at any time in your browser settings. We do not use cookies, analytics, ads or third-party scripts.

Language suggestion (/api/geo)

To suggest a page language, your browser calls /api/geo. The server looks up the country for your IP address in a local DB-IP database, without contacting any external service. The IP is used in memory only for that lookup and for temporary rate limiting against abuse; it is not stored by the application. Legal basis: legitimate interest (LGPD art. 7, IX) in serving the site in a suitable language and protecting it.

Server logs

Like any website, the hosting web server keeps standard access logs (IP address, date and time, requested URL and browser user agent). They are used for security, troubleshooting and aggregate traffic statistics, kept for a limited period and then deleted. Legal basis: legitimate interest (LGPD art. 7, IX) in keeping the site secure and running.

Sharing

We do not sell, rent or share personal data for marketing. Data may only be disclosed to authorities when required by law or court order.

Your rights

Under LGPD art. 18, you may request confirmation that processing takes place, access, correction, anonymisation, blocking or deletion of data, information about sharing, among other rights. Send your request to hello@4devsbr.com. You may also file a complaint with Brazil's National Data Protection Authority (ANPD).

Changes

This policy may be updated as the site changes; the date below shows the current version. See also the Terms of Use and Credits.

Last updated: 13/11/2026 (13 November 2026).