Query String Parser
Paste a URL or query string to parse its parameters into readable JSON, with repeated keys grouped into arrays. Runs entirely in your browser.
Format JSON: JSON formatter · decode JWT claims: JWT decoder · encode URLs: URL encoder.
Parse a URL query string
Table + JSON view for debugging UTM tags and API params.
FAQ
What can I use Query String Parser for?
Query String Parser is useful when you need to paste a URL or query string to parse its parameters into readable JSON, with repeated keys grouped into arrays. Runs entirely in your browser. It is meant for quick checks, everyday workflows and practical tasks where a fast browser-based result is enough.
How do I use Query String Parser correctly?
Paste the code, data, URL, token or text you want to inspect, then choose any formatting or validation options.
What input does Query String Parser need?
Use the fields shown in the tool and keep the input close to the real case you want to solve. If the page includes examples or presets, start with those to understand the expected format.
What result does Query String Parser give me?
The tool returns formatted output, decoded data, parsed information or validation feedback for your development workflow. In most cases the output updates instantly and can be copied, downloaded or used as a reference for your next step.
How accurate is Query String Parser?
Developer tools are designed for quick inspection, formatting and local checks. Always test production code in your real environment.
Is my data uploaded when I use Query String Parser?
The tool is designed to run in your browser, so ordinary inputs are processed locally unless a page explicitly states that it needs an online lookup.
What common mistakes should I avoid with Query String Parser?
Avoid assuming formatted or decoded output is production-ready. Validate edge cases in your own runtime before shipping.
What related tasks can Query String Parser help with?
Query String Parser is intended for use cases related to "query string parser" and nearby needs such as "url parameters to json". For best results, follow the labels, examples and options on the page.
What are the limits of Query String Parser?
It is optimized for common web use, not unlimited batch processing or every edge case.
When should I double-check the output from Query String Parser?
Double-check the output before pasting it into production code, configuration files or automated workflows.