api tool
Query String Parser
Paste a query string or full URL and get a JSON view of its parameters.
Paste data here. It stays in your browser.
Copy-ready result appears here.
How it works
- Removes the URL prefix before ?.
- Parses with URLSearchParams.
- Groups repeated keys into arrays.
Common use cases
- Inspect marketing URLs.
- Debug OAuth callbacks.
- Review API query parameters.
Code example
Object.fromEntries(new URLSearchParams(location.search))Repeated keys
Some URLs include repeated query keys. This parser groups repeated values into arrays so they are easier to inspect.
Debugging callbacks
Query parsing is especially useful for OAuth redirects, webhook testing, and marketing URLs.
FAQ
Is my input uploaded?
No. This MVP runs tool logic in your browser and does not send tool input to a server.
Can I use this on mobile?
Yes. Pages are mobile-first and designed for quick copy, paste, and share workflows.
Does the tool store history?
No. The MVP does not store tool input history or create user accounts.
Should I verify important output?
Yes. These tools are designed for productivity, but production changes and financial decisions should be independently verified.
Can the tool run after the page loads?
Yes. The interactive logic runs in the browser once the static page and JavaScript island are loaded.
What input format should I use?
Use the examples on the page as a starting point, then replace them with your own local input.