Static + Browser-Only
Decode query strings such as a=1&b=hello%20world into readable JSON before sharing callback URLs, redirect links, and troubleshooting examples.
This is useful when raw query parameters are too dense to review comfortably in their original URL form.
Input
Output
What Is It
A query string decoder parses URL parameters and decodes percent-encoded values so developers can inspect links, callbacks, redirects, and request examples in a more readable structure.
Use Cases
Why It Matters
Long links can hide emails, IDs, state parameters, auth context, or tracking values. Parsing them into readable JSON makes it easier to spot sensitive data and decide whether masking is needed before external sharing.
FAQ
Yes. This page is designed for raw query strings and URL parameter fragments.
Repeated keys are grouped into arrays so the output stays readable and useful for debugging.
Support tickets, Slack threads, and docs often contain long URLs copied directly from a browser or network trace. Those URLs may include account IDs, emails, redirect state, session context, or internal references hidden behind encoded characters.
Decoding and parsing query strings in the browser is a simple best practice that improves review quality and helps teams catch values that should be redacted or masked before sharing.
Examples
Use this page when a dense URL parameter block should become readable JSON for review.
email=john.doe%40example.com&return=%2Fbilling%3Ftab%3Dcards&tag=demo&tag=qa
{
"email": "john.doe@example.com",
"return": "/billing?tab=cards",
"tag": ["demo", "qa"]
}