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Parse key-value query strings into decoded parameters, repeated keys, and empty values in your browser.
Parse a query string into readable parameters
Paste a full URL or query string to inspect decoded parameters, repeated keys, empty values, and copy-ready key-value pairs.
Inspect parameters without manually splitting ampersands and equals signs
Use Query String Parser when you need a quick breakdown of URL parameters, tracking tags, callback payloads, or copied query strings, whether you paste the raw query itself or the full URL that contains it.
Paste a full URL or query string with key=value pairs to inspect it.
Parsed query string result
Review decoded parameters, repeated keys, empty values, and a copy-ready parsed summary.
Ready Key=value pairs required
Paste a full URL or query string above and click "Parse query string" to view decoded parameters.
Parsed parameters No parameters parsed yet
No parameters parsed yet
Paste a full URL or query string above and click "Parse query string"
Parameter notes No notes yet
Repeated keys and empty-value notes will appear here after parsing.
How to use this query string parser
- Paste a query string with key=value pairs into the input box.
- Review the parsed parameter list and the decoded values instantly.
- Check the metrics for total parameters, unique keys, repeated keys, and empty values.
- Use Copy to export the parsed summary or Copy pair on any row to copy a single parameter.
- Use Example to load a sample query string or Clear to reset the parser.
Query string parser examples
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utm_source=newsletter&utm_medium=email&utm_campaign=spring-sale
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q=query+string+parser&sort=recent&page=2
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ref=docs&ref=search&empty=
What this query string parser shows
This parser focuses on readable parameter inspection. It shows the decoded query string parameters, total parameter count, unique keys, repeated keys, and empty values so you can understand how a query string is assembled without splitting it manually, including decoding URL-encoded characters and extracting query parameters.
When a dedicated query string parser is useful
A focused query string parser is useful when you are debugging tracking links, reviewing callback payloads, checking redirect parameters, inspecting copied URL search strings, or validating query keys before sending a request. Because the parsing runs in the browser, you can inspect the result instantly without sending it anywhere.
Query String Parser vs URL Parser
Query String Parser is narrower. It focuses only on the search-parameter portion such as `a=1&b=2`. URL Parser is broader and breaks down a full absolute URL into protocol, host, path, query string, parameters, and fragment.
Query string parser FAQs
Do I need to paste the full URL?
No. This tool is built for the query string portion only. You can paste `a=1&b=2` or include a leading `?` if you want.
Does it decode plus signs and percent-encoded values?
Yes. The parser returns decoded parameter values so copied query strings are easier to read.
Can it detect repeated keys?
Yes. The result shows repeated keys and keeps all parameter rows in the original order.