Updated September 2026
Privacy policy
This site is run by Matheus Senff (Senff-Dev) and was built to collect as little as possible: there's no sign-up, no login and no database.
While browsing
Aggregated, anonymous usage metrics — page views, country, device type and clicks on the site's buttons and links (contact, projects, profiles) — via Vercel Web Analytics and, when enabled, Umami. Neither uses cookies or identifies you.
Page speed measurements (Web Vitals) via Vercel Speed Insights. When something breaks, Sentry receives the error report with the page and the browser, without IP addresses, cookies or personal data.
Contact
The site has no form: the WhatsApp button takes you straight to the app with the message ready, and the email address is shown so you can write from your own email app. From there, WhatsApp's or your email provider's privacy policy applies, and the conversation stays between us.
Cookies
Only two, both functional: theme stores the light or dark theme, and NEXT_LOCALE stores the language. No advertising or tracking cookies.
Your rights (LGPD)
You can request access to, correction of or deletion of your data at any time, at the email below.
Contact: contatomatheussenff@gmail.com