Cookie & Tracking Technology Policy

Cookies are small text files placed on your browser or device when visiting websites. Local Storage is an industry-standard browser storage mechanism that allows web applications to store key-value data directly on your device without transmitting it to remote servers on every HTTP request. Cerilas Tools adheres to a strict privacy-first principle: we do not use third-party invasive advertising cookies or cross-site tracking pixels.

a) Strictly Necessary / Essential Cookies & Local Storage: • Theme Preference: Storing your selected dark or light mode preference in localStorage (cerilas_theme) to prevent screen flickering upon page loads. • Security & Session Token: Retaining authenticated admin session state and CSRF tokens where applicable. • Tool State: Preserving draft calculation parameters (such as your current Sample Size variables or Pomodoro timer intervals) locally on your device. b) Anonymous Analytics & Traffic Quality: • Anonymous Visitor ID: A randomized UUID stored in local cookies to track unique human visitors versus automated web scrapers and crawlers. This metric helps us provide transparent, tamper-proof usage metrics. • Google Analytics 4 (GA4): Anonymized IP tracking to monitor aggregate page views, platform reliability, and browser compatibility.

You maintain complete control over cookies through your web browser settings. You can choose to block, delete, or receive alerts before cookies are stored. Please note that because Cerilas Tools relies on modern local browser technologies (WebAssembly and localStorage), disabling localStorage may reset your custom theme and preferences upon every reload.