Storage Manager - LocalStorage, SessionStorage & Cookies

Last updated: September 15, 2026 • Version 1.0.0

Storage Manager - LocalStorage, SessionStorage & Cookies ("the extension") is a classic card editor that lets you view, add, edit, delete, search, and import/export localStorage, sessionStorage and cookies for the currently active site. Your privacy is central — everything happens locally in your browser.

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No data collection. No tracking. No server.
All storage inspection and editing happens on your device. We do not collect, store, transmit, sell, or share any personal data with the developer or any third party.

📦 What the extension does

When you open the popup on any http/https site, the extension:

Injects a lightweight script via chrome.scripting.executeScript into the active tab to read/write window.localStorage and window.sessionStorage for that origin only
Uses chrome.cookies.getAll / set / remove via the background service worker to list and edit cookies for the current site
Lets you search/filter keys, pretty-print JSON values, copy to clipboard, and import/export JSON files (processed 100% locally) — files never leave your device
Stores only your UI preferences (theme light/dark and cookie column visibility) in chrome.storage.local — no site data is synced or uploaded

🚫 Data we do NOT collect

No browsing history — only the active tab's hostname/origin is read to scope storage; no history is stored or transmitted
No personal data — no names, emails, identifiers, or cookie values are collected by us
No analytics or tracking — no Google Analytics, no telemetry, no ads
No external transmission — localStorage/sessionStorage never leaves the page context; cookie operations stay between the extension and Chrome's cookie store; import/export files are handled via Blob downloads locally
No background collection — content script is injected on demand only when you open the popup, not persistently

🔑 Permissions and why they're needed

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activeTab

Accesses the currently active tab's URL/hostname to scope storage and cookies to that site and to inject the on-demand storage script.

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scripting

Executes a one-off function in the page's MAIN world to read/write localStorage / sessionStorage (not accessible from extension context otherwise). No persistent content script.

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Lists, creates, edits and deletes cookies for the active site via chrome.cookies API. HttpOnly cookies are shown/deletable but HttpOnly flag cannot be unset — browser-enforced and surfaced as disabled.

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storage

Saves only extension settings (theme and cookie column prefs) via chrome.storage.local. Never used to exfiltrate site data.

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host_permissions: <all_urls>

Required so chrome.cookies and scripting work on any https/http site you visit. No data is sent to any host — permission is only to read/write storage locally per site.

🤝 Data sharing

We do not sell, rent, or transfer any user data to third parties. We do not use data for advertising, credit, or profiling. The only data touched is the site storage you explicitly choose to view/edit, and it remains between the page, Chrome's storage, and your local downloads.

⚙️ Local processing

Import/Export, JSON pretty-print, search/filter, and clipboard copy are all 100% offline. Export creates a local Blob JSON file ({hostname}-{type}-{timestamp}.json or combined -all-), Import is parsed and validated locally before any write, with an overwrite/skip confirmation.

👶 Children's privacy

The extension does not knowingly collect data from anyone, including children under 13. It is a utility tool with no sign-in or data entry beyond the storage you edit on sites you visit.

📝 Changes to this policy

If this policy changes, the updated version will be posted at this same URL with a revised "Last updated" date. Material changes will be reflected in the Chrome Web Store listing.

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Questions? Contact the developer via the Chrome Web Store support link for Storage Manager.

No data collected • All processing local • Open source friendly