URL Tools

Query String Parser

Query String Parser — split a query string into decoded key/value pairs, handling duplicate keys, using URLSearchParams in your browser.

Client-sideRuns entirely in your browser — your data never leaves your device, and it works offline once loaded.

Query String Parser is a free URL Tools utility that runs entirely in your browser — nothing you enter is uploaded.

Query string or URL
Parameters





  
How to use Query String Parser

  
    
      
  1. Drop your text into the field at the top of Query String Parser.
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  2. Query String Parser updates the output automatically as you type.
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  3. Use Copy to keep or reuse the result.
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About this tool

  
Query String Parser runs entirely in your browser. Query String Parser builds and encodes links in your browser, percent-encoding parameters so the URL stays valid.

  
Reserved characters are escaped to standard rules so the link works everywhere. Your input never leaves the page, and no account or install is required.

  
Frequently asked questions

  

      
How do I use Query String Parser?
Query String Parser runs entirely on your device: add your input, and it parses it locally in real time.

      
Is Query String Parser free to use?
Yes — Query String Parser is completely free, with no usage limits.

      
Does Query String Parser upload my data?
No — Query String Parser processes everything locally in your browser, so nothing you enter is uploaded or stored.

      
Does Query String Parser encode reserved characters correctly?
Yes. Query String Parser follows standard percent-encoding rules in your browser so links stay valid.

      
Does Query String Parser work offline?
Once the page has loaded, Query String Parser keeps working with no network connection.

  

  
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