Tracking down a stale session
A user reports being logged out unexpectedly. Inspect Session Storage and cookies together to see whether a token was cleared, overwritten, or never written in the first place.
Debugging & InspectionIn Development
Understand What Your Browser Stores.
Inspect Local Storage, Session Storage, and cookies in a structured, readable interface.
This extension is currently in development. An installation link will appear here once the Chrome Web Store listing is live.
app.example.dev/settings
Local Storage6
Session Storage3
Cookies4
filter keys…
5 of 6KeyValueSize
auth.tokeneyJhbGciOiJIUzI1NiIs…412 B
theme.preferencedark12 B
cart.items[{ id: 4821, qty: 2 }]1.2 KB
feature.flags{ betaSearch: true, … }286 B
onboarding.step38 B
Total 1.9 KB
Live
Overview
The problem it solves
Browser Storage Analyzer is a focused inspection tool for the data your web application keeps in the browser. Instead of clicking through separate DevTools panels, you get Local Storage, Session Storage, and cookies side by side in one structured view — with keys, values, sizes, and origins laid out so you can actually read them. It is built for the moments when you need to answer a simple question quickly: what did this page just write, and where did it put it?
Inspect what your app persists — built to fit into an existing debugging workflow rather than replace it.
Capabilities
What it does
Feature areas reflect the extension's intended scope. Individual capabilities are refined as the tool develops.
All storage areas in one view
Compare Local Storage, Session Storage, and cookies without switching between panels.
Structured key-value browsing
Read stored entries as a clean, sortable list rather than a wall of raw strings.
Fast lookup while debugging
Filter by key or value to find the entry you care about during an active debugging session.
Size awareness
See how much space each entry occupies so oversized values are easy to spot.
Cookie inspection
Review cookie names, values, and scope alongside the rest of your stored data.
Live refresh
Re-read the current state of a page's storage after your application writes to it.
How It Helps
Realistic developer scenarios
These are the kinds of situations the extension is designed around — not guarantees about what it will find.
Auditing what a feature persists
After shipping a new preference panel, confirm exactly which keys your application writes and whether old keys are still lingering from a previous version.
Reviewing storage growth
Spot entries that have grown unexpectedly large before they become a quota problem in production.
Privacy
How your data is handled
Storage inspection happens locally in your browser. The extension is designed to read page storage for the tab you are actively inspecting and to avoid sending that data anywhere.
- Storage values are read from the active page and displayed locally.
- No account, sign-in, or cloud sync is required to use the extension.
- The extension does not need access to unrelated browsing activity to do its job.
- Any future change to data handling will be documented on this page before release.
Keep Exploring
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In Development
Performance & Diagnostics
Browser Performance Analyzer
Inspect useful browser performance metrics and resource timing information in one place.
- Navigation timing
- Resource loading overview
- Performance entries
Learn MoreIn Development
Coming Soon
Responsive Testing
Viewport Resizer
Preview your web application at configurable viewport dimensions and switch between saved presets.
- Custom dimensions
- Reusable presets
- Common device sizes
Learn MoreComing Soon
Follow Browser Storage Analyzer
This extension is still being built. Explore the rest of the catalog in the meantime, or get in touch with questions.