Auto-Clear Site Data by byuserforuser

Auto-Clear Site Data

Automatically clears website data (cookies, localStorage, indexedDB, cache, service workers) when you leave a site — by closing tabs, navigating away, or when tabs are discarded — helping you maintain privacy and free up storage. 🧹✨



🎯 Key Features

⏱️ Smart Automatic Clearing

• 🤖 Clears data automatically after a configurable delay (0-3600 seconds) when you exit a site
• ⚡ Supports instant clearing (0 seconds) for immediate privacy
• 🚀 Optional "Clear on Startup" to clean sites from your previous session
• 🎮 Manual "Clear Now" with granular control over which data types to clear

🛡️ Advanced Privacy Controls

• 🎚️ Whitelist/Blacklist Modes: Clear everything except specific sites, or only specific sites
• 📊 Granular Data Types: Choose exactly what to clear — cookies, localStorage, sessionStorage, indexedDB, cache, service workers
• 🔍 Deep Clear: Optionally clear parent domain data (e.g., clear accounts.google.com → clear google.com too)
• 🔀 Redirect Catching: Clears data from sites you navigated through quickly (configurable X-step detection)

🗂️ Firefox Container Support

• 📦 Full support for Firefox Multi-Account Containers
• 🎯 Per-container exemption rules
• 🔐 Independent container-scoped vs. global data clearing

🧠 Smart Dependency Tracking

• 🕸️ Automatically tracks and clears sub-frames (iframes) and 3rd-party scripts
• ⏳ Deferred clearing for shared resources across tabs
• 🛑 Never clears data that's still in use by other tabs

🔧 Developer-Friendly

• 🔴 Real-time badge showing pending clears count
• 📝 Optional console logging
• 🪵 Built-in page logger for debugging

🚪 When Data Gets Cleared

The extension clears data when you leave a site through:

• ❌ Tab Close — Closing the last tab of a website
• 💤 Tab Discard — Browser unloads inactive tabs
• 🔀 Navigation — Navigating to a different domain
• 🚀 Startup — Optional cleanup of sites from previous session

🏗️ Technical Highlights

⚙️ Race Condition Elimination

• 🔒 Advanced locking mechanisms prevent data corruption during concurrent operations
• 🎯 Sharded domain index architecture isolates container operations
• 🔄 Multi-layered safety checks detect tabs opening during async operations

🚀 Heavily Optimized Performance

• 📈 Batched API calls reduce browser overhead by 95%
• 💾 O(1) lookups with Map/Set data structures (100-400x faster)
• 🎨 Debounced I/O reduces storage writes by 80%
• ⚡ Lazy loading for smooth UI with 1000+ rules
• 🚀 Parallel startup — 60-70% faster extension startup

🎭 Edge Case Handling

• 🌏 IPv6 address support
• 🔁 Meta-refresh and client-side redirect detection
• 👻 "Ghost page" dependency tracking
• 🔀 Cross-container global data management

📱 Cross-Platform

• 🦊 Firefox Desktop
• 📱 Firefox Android

🎯 Perfect For

• 🕵️ Privacy-conscious users wanting automatic cleanup
• 🎨 Multi-container power users managing multiple identities
• 💾 Anyone wanting to free up browser storage automatically
• 👨‍💻 Developers testing different login states and scenarios

🔒 Privacy First

100% local processing. Your settings, exemption lists, and browsing habits are never transmitted, shared, or analyzed. All data stays on your device.