Local Storage Viewer

WHAT IT DOES

Local Storage Viewer provides a complete interface for inspecting and managing localStorage data for the current domain. The tool displays every stored item with its key, value, data type (string, number, boolean, object, or array), and size in bytes. You can search for specific keys or values, sort items by key, size, or type, and view JSON data in a formatted preview. The tool shows total storage used, remaining quota, and visually warns when storage is running low. Individual items can be copied to clipboard or deleted, and the entire storage can be cleared with a single action.

WHERE IT RUNS

The extension runs entirely within your browser's local environment using the BotGentz framework. All localStorage reading, parsing, and display occur on your machine without any network requests. No storage data, page content, or user activity is ever transmitted, uploaded, or stored externally. The tool works on any website and respects the browser's security boundaries, operating within the isolated extension sandbox. localStorage is accessed directly through the native localStorage API in the context of the current page.

HOW TO USE

Click the extension toolbar icon to open the Local Storage Viewer panel. All localStorage items for the current domain are displayed automatically in a scrollable list showing key, type, size, and value preview. Use the search box to filter items by key or value. Change the sort order using the sort dropdown (by key, size, or type). Toggle "Show JSON preview" to see parsed JSON data in a formatted view instead of raw strings. Toggle "Case sensitive search" for exact matching. Enable "Auto refresh" to keep the display updated every 2 seconds. Click "Copy" on any item to copy its value to your clipboard. Click "Delete" to remove an individual item. Use "Copy All Keys" to export all keys, or "Clear All Storage" to delete all localStorage items for the domain.

THE STORAGE INSPECTION ENGINE — WHY IT WORKS

Most localStorage viewers simply dump all key-value pairs without understanding the data structure or providing meaningful analysis. This tool performs a detailed inspection of each item: it calculates the byte size by multiplying the combined length of the key and value by 2 (since JavaScript strings are UTF-16), attempts to parse each value as JSON to detect data types (object, array, number, boolean), and falls back to string type when parsing fails. The storage quota monitoring reads localStorage length and total size, comparing it against the browser's typical 5MB limit. The search functionality performs case-insensitive or case-sensitive substring matching on both keys and values using efficient array iteration. The auto-refresh mechanism uses a debounced timer that re-fetches data without page reload, preserving the user's current view while showing new or updated items.

THE PANEL

The Local Storage Viewer panel is fully draggable by its title bar and remembers its position on screen per website. It snaps to the edges of your browser window for clean alignment. Collapse the panel to a compact icon strip using the minimize button, restoring it with a single click. Resize the panel by dragging any edge or corner; the storage list and controls adjust proportionally. Press the Escape key to close the panel instantly. The panel maintains independent state for each browser tab, allowing you to view localStorage in multiple tabs simultaneously.

PLEASE NOTE

This extension requires the free BotGentz extension framework to be installed and enabled. localStorage is domain-specific; the tool only shows data for the current domain. Deleting items is permanent and cannot be undone. Some sites may modify localStorage frequently; auto-refresh helps keep the view current. All storage data is read locally and is never transmitted, logged, or shared. The extension requests no network permissions and functions entirely offline. The source code is fully auditable and available for review.