Auto-Clear Site Data Automatically clears cookies, localStorage, indexedDB, cache, and service workers when you leave a site — whether you close a tab, navigate away, or the browser discards it. Stay private and keep your storage clean without lifting a finger. 🧹 ✨ What It Does

Auto-clears on exit — Data is wiped after a configurable delay (0–3600s) when you leave a site
Clear on Startup — Optionally clean up leftover data from your last session
Manual "Clear Now" — One-click clearing with full control over what gets removed

🎛️ Flexible Exemptions Create independent exemption rules for any site or pattern:

Whitelist mode — Clear everything except your exempted sites
Blacklist mode — Only clear data from sites you specify
Per-container rules — Different exemptions for each Firefox Container
Granular control — Choose exactly which data types to keep or clear per rule

🔍 Advanced Options

Deep Clear — Also clear parent domain data (e.g., accounts.google.com → google.com)
Redirect catching — Catch and clear sites you quickly pass through
Deferred clearing — 3rd-party resources shared across tabs are cleared only when all tabs using them are closed
Smart dependency tracking — Automatically tracks iframes and scripts, never clears data still in use
Container support — Full Firefox Multi-Account Containers integration with per-container settings

🚀 When Data Gets Cleared

❌ Tab closed — Last tab of a site is closed
💤 Tab discarded — Browser unloads inactive tabs
🔀 Navigation — You navigate to a different domain
🚀 Startup — Optional cleanup from previous session

⚡ Built for Performance

Batched API calls reduce browser overhead
Smart dependency tracking prevents clearing data still in use
Race-condition-safe architecture

🔒 Privacy First 100% local. Your settings and browsing habits never leave your device. 🔐 Permissions Explained

tabs — Check if a site is still open before clearing its data
browsingData — Actually clear cookies, cache, localStorage, etc.
storage — Save your settings and exemption rules
contextualIdentities — Support Firefox Containers
webNavigation — Detect when you navigate away from a site
cookies — Find all subdomains for "Deep Clear" mode
webRequest — Track iframes and 3rd-party scripts loaded by pages
alarms — Schedule delayed clearing

Works on Firefox Desktop and Firefox Android.