Developer Utilities

localStorage Viewer & Editor — Inspect Browser Storage

Browse, edit, add and delete localStorage and sessionStorage entries, with JSON pretty-printing and a one-click export.

What is Storage Inspector?

The Storage Inspector in UltraDevKit helps you work with a live web page. Browse, edit, add and delete localStorage and sessionStorage entries, with JSON pretty-printing and a one-click export.

Category

Developer Utilities

Best for

Flip a feature flag stored in localStorage to test a variant; Inspect cached state that is making an app behave oddly

Runs on

Any page in Chrome

When you'd use it

• Flip a feature flag stored in localStorage to test a variant
• Inspect cached state that is making an app behave oddly
• Clear a stale onboarding flag to replay a first-run experience
• Export storage contents to attach to a bug report

How to use Storage Inspector

1. Open Storage Inspector.
2. Switch between localStorage and sessionStorage.
3. Filter by key or value to find what you need.
4. Edit a value in place and save, or export everything as JSON.

Storage Inspector FAQ

Will editing a value break the app?

It can, which is often the point when reproducing a bug. Export first if you want to restore the original state.

Why is storage empty on some pages?

Storage is scoped per origin, and some contexts — sandboxed frames, or browsers with storage disabled — block it entirely.

What is the difference between localStorage and sessionStorage?

localStorage persists until it is explicitly cleared; sessionStorage is wiped when the tab closes. Both are per-origin, and the inspector shows each separately.

Works well with