Developer Tools
Extract JS Storage Keys
Extract localStorage and sessionStorage key strings from pasted JavaScript, TypeScript, JSX, or TSX source without executing, rendering, fetching, compiling, or uploading code.
0 / 30,000 characters. No upload, storage, or account required.
JS Storage Keys workflows
Use this extractor when copied source needs a browser-local inventory before API reviews, release QA, migrations, documentation, cleanup, or handoffs.
Audit source data flow
Pair it with Extract JS Module Specifiers, Extract JS Environment Variables, and Extract JS Route Paths.
Review behavior and failures
Use Extract JS Error Messages, Extract JS Function Names, and Extract JS Test Case Names.
Clean copied output
Send extracted rows to Sort Lines, Remove Duplicate Lines, or Normalize Whitespace.
What this tool does
Extract JS Storage Keys scans pasted source as text, lists browser storage keys with source lines, removes duplicates, and runs locally in your browser.
Common use cases
Extract localStorage and sessionStorage key strings from pasted JavaScript, TypeScript, frontend components, browser utilities, tests, or copied source before client-state audits, privacy reviews, migrations, documentation, or QA handoffs.
Use Extract JS Storage Keys when you are working with copied API payloads, logs, encoded values, config snippets, identifiers, or debugging data and need a quick browser-local check before pasting the result into docs, tickets, tests, or another developer tool.
How to use it
- Paste JavaScript, TypeScript, JSX, TSX, framework files, tests, client modules, generated code, or copied source that may contain storage keys.
- Choose whether duplicate rows should be removed and whether extracted values should be normalized for comparison.
- Review extracted values with line numbers, then copy the clean list for audits, migration notes, QA checklists, documentation, or handoffs.
Example workflow
Copy a small payload or encoded value from an API response, request URL, log line, or config file. Run the focused check here, confirm the output is readable, then continue with related developer data tools such as validation, formatting, decoding, timestamp conversion, or CSV/JSON conversion.
Privacy note
Extract JS Storage Keys runs locally in your browser. Your pasted code is not uploaded, compiled, resolved, fetched, executed, stored, or logged.
FAQ
Does Extract JS Storage Keys execute JavaScript?
No. It scans pasted source as text and does not execute code, compile TypeScript, fetch dependencies, send requests, upload, store, or log snippets.
Which storage keys are included?
It finds common string-literal keys used with localStorage or sessionStorage getItem, setItem, removeItem, key, and bracket access patterns in pasted snippets.
When is this useful?
Use it while preparing API inventories, source audits, migration notes, QA checklists, documentation, release notes, or copied-source handoffs.
Explore more tools
Browse the Developer Tools hub or continue with the Developer Data Toolkit when this task is part of a larger workflow.