💾 Local Storage Manager
Professional localStorage management tool for web developers. View all localStorage entries in a clean interface, add new key-value pairs, edit existing entries, delete specific items, and clear all data. Includes JSON formatting, search functionality, and backup/restore capabilities.
Local Storage Contents:
7 localStorage Entries → Management Interface
View, edit, add, and delete entries
📊 Storage Statistics
Total Entries
Storage Used
Storage Status
How to Use This Local Storage Manager
How to Use the Local Storage Manager
🚀 Quick Start
- Load Current Data: Click "Load Storage Data" to view all localStorage entries for this domain
- Add New Entry: Fill in "New Key" and "New Value" fields, then reload to save
- Edit Existing: Click "Edit" on any entry to modify its value inline
- Delete Entries: Use "Delete" buttons to remove specific entries or "Clear All" for complete cleanup
⚙️ Advanced Features
- JSON Formatting: Enable "Format JSON values" to pretty-print complex data structures
- Search & Filter: Use "Filter Keys" to quickly find specific localStorage entries
- Export/Import: Download localStorage data as JSON backup or import from file
- Auto-refresh: Keep data current with automatic updates after modifications
⚠️ Domain Limitation: This tool only manages localStorage for the current domain due to browser security policies. Each website has its own isolated localStorage space.
How It Works
How the Local Storage Manager Works
Storage Detection & Loading
The tool scans the browser's localStorage API to retrieve all key-value pairs stored for the current domain, displaying them in an organized table format.
Data Formatting & Display
Values are analyzed for JSON content and formatted for readability. The interface shows keys, values, data sizes, and provides interactive controls for each entry.
Interactive Management
Users can add new entries, edit existing values, delete specific items, or clear all data using the browser's native localStorage methods with validation and error handling.
Export & Import Capabilities
The tool can export all localStorage data as a JSON file for backup purposes and import data from files to restore previous states or transfer settings between environments.
🔒 Security & Privacy
All operations are performed entirely within your browser using JavaScript's localStorage API. No data is sent to external servers, ensuring complete privacy and security of your stored information.
When You Might Need This
- • Debug web application storage issues by viewing all localStorage entries
- • Clean up old or unused localStorage data to free browser storage space
- • Export localStorage data as backup before making major application changes
- • Import localStorage settings to restore user preferences after browser reset
- • Test different localStorage configurations for web development
- • Monitor localStorage usage and identify memory-heavy entries
- • Copy localStorage data between different browser profiles or devices
- • Modify localStorage values for testing application behavior
- • Analyze localStorage structure to understand data organization
- • Delete specific localStorage entries without affecting other stored data
Frequently Asked Questions
What is localStorage and how does it work?
localStorage is a web storage API that allows websites to store data locally within a user's browser. Unlike cookies, localStorage data persists until explicitly removed and can store up to 5-10MB per domain. It's commonly used for user preferences, application state, and offline data caching.
Is it safe to edit localStorage data directly?
Yes, it's generally safe to edit localStorage data since it's stored locally in your browser and only affects the specific website's functionality. However, modifying critical application data might cause unexpected behavior or require you to refresh the page or clear the data entirely.
Can I use this tool to manage localStorage from any website?
This tool can only access localStorage data from the domain where it's running due to browser security restrictions (same-origin policy). Each website's localStorage is isolated, so you'll need to use the tool on the specific site whose localStorage you want to manage.
What happens if I delete localStorage data by mistake?
If you accidentally delete localStorage data, it's permanently removed from your browser. However, many web applications will recreate default settings or prompt you to reconfigure preferences when they detect missing localStorage data. This is why exporting a backup before making changes is recommended.
Why might localStorage entries appear as JSON strings?
Many web applications store complex data (objects, arrays) in localStorage by converting them to JSON strings since localStorage can only store string values. Our tool can format these JSON strings for better readability and allows you to edit them as structured data.