Privacy

Compresso is private by architecture for image compression. This policy covers compresso.izaias.xyz.

Your images

The Compresso app compresses photos entirely on your device using the browser Canvas API. Image bytes are not sent to Compresso servers during compression. You can verify this in DevTools → Network while compressing.

Compresso for iPhone and Android

The Compresso mobile app makes smaller copies of photos entirely on your phone. It collects no data: no account, no analytics, no ads and no tracking, and it makes no network requests. It only sees the photos you pick in the system photo picker, and it can only add new photos to your library, never read or change the others. Your settings stay on your phone.

Marketing site analytics

This website uses Vercel Analytics, Vercel Speed Insights, and Contentsquare for aggregated usage and performance metrics. These tools do not receive your image files. They may collect page views, referrers, and interaction patterns similar to most websites.

Developer library

compresso.js runs in your application under your control. It makes no network requests unless your code uploads the optimized file.

Early access sign-ups

If you ask for an early-access invite at compresso.izaias.xyz/early, we keep your email address, your first name if you give it, your phone type, the page language, the link you came from and the time. We use them only to send your invite and its instructions, and for nothing else: no newsletter, no sharing, no selling. The legal basis is your consent (GDPR art. 6(1)(a), LGPD art. 7, I), which you can withdraw at any time. The details are stored in Google Sheets and the invite is sent with Gmail, so Google processes them on our behalf, possibly outside your country, under its standard contractual clauses. We delete them once the app is public in the stores, and no later than six months after you sign up. To see, correct or delete your details, reply to the invite email; we act within 15 days. You can also complain to your data protection authority (in Brazil, the ANPD). The controller is Izaias Cavalcanti, the developer of Compresso. The early-access page runs only Vercel's cookieless analytics.

Questions: open an issue on GitHub. GitHub Issues · Docs