Web Storage Manager (LocalStorage)
View, edit, and delete localStorage and sessionStorage entries right in your browser
A developer tool for inspecting the data your browser keeps in window.localStorage and window.sessionStorage. Browse every stored key, add new entries, change existing values, or wipe them out — all without opening DevTools.
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🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
How to use
- Pick the Local Storage or Session Storage tab.
- Review the live list of every key-value pair saved for the current domain.
- Use the Add Item form to store a new key and value when you need one.
- Edit or Delete any existing entry directly from the list.
FAQ
- Can I manage localStorage for other websites?
- No. Because of the browser's Same-Origin Policy, this tool can only read and write storage data for the current domain (Dynamic Labs).
- Is there a limit on how much data I can store?
- Yes — the limit varies by browser, but it's typically around 5-10MB per domain. Once you exceed it, saving a new item throws a QuotaExceededError, so for larger amounts of data, it's better to reach for something like IndexedDB instead of localStorage.
- Is there a limit on how much data I can store?
- Yes — the limit varies by browser, but it's typically around 5-10MB per domain. Once you exceed it, saving a new item throws a QuotaExceededError, so for larger amounts of data, it's better to reach for something like IndexedDB instead of localStorage.