Chrome DevTools Extension
LZ-String Viewer for Chrome DevTools
Inspect and decompress localStorage or sessionStorage values compressed with LZ-String directly inside Chrome DevTools. Get clean, readable data without switching contexts or running scripts manually. This Chrome DevTools extension for localStorage helps you decode compressed localStorage payloads and inspect sessionStorage data in seconds.
Used by developers debugging production SPAs, admin dashboards, and compressed application state.
Step 1
Open Chrome DevTools
Step 2
Select a localStorage or sessionStorage key
Step 3
Instantly view decompressed data
Example: Decoding compressed localStorage data
Before (localStorage value)
"N4Igzgpg..."After (LZ-String Viewer)
{
user: { id: 42, role: "admin" },
settings: { theme: "dark" }
}This makes compressed application state readable instantly without writing custom scripts.
Key features
- Supports LZ-String compressed and plain values
- Works with both localStorage and sessionStorage
- Integrated directly into Chrome DevTools
- Tree-based data visualization for clarity
- Instant feedback, no external tools required
Use cases
- Debugging compressed application state
- Inspecting large stored payloads
- Reverse-engineering frontend storage
- QA and support troubleshooting
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Frequently asked questions
Yes. The extension detects both compressed and plain values and displays the result automatically.
No. All processing happens locally inside your browser.
The extension is built for Chrome DevTools and works in Chromium‑based browsers.
Install it from the Chrome Web Store listing linked on this page.
Yes. If your app stores LZ-String data in localStorage or sessionStorage, the extension can read it.
Yes. The viewer is designed for large payloads and renders them in a readable tree structure.
Install from the Chrome Web Store listing.