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.
Examples
Export options
Build query string (reverse)
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 does it do?
Paste a URL or query string and it parses the parameters into readable JSON. Repeated keys become arrays.
Is my URL uploaded?
No. Parsing happens entirely in your browser.
Does it decode percent-encoding?
Yes — values are URL-decoded automatically.
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