Runs locally
Query Builder
Turn key=value lines into a query string.
Ctrl+Enter runs. Ctrl+Shift+Backspace clears.
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Turn key=value lines into a query string. Runs in the browser. Nothing is uploaded.
About this tool
Build a query string without worrying about encoding spaces, ampersands or Cyrillic. Write one parameter per line as key=value and copy the encoded result.
How to use it
- 01
Write one key=value pair per line.
- 02
Review the encoded query string.
- 03
Append it to your URL after ?.
FAQ
Frequently asked questions
Are special characters encoded?
Yes. Spaces, &, = and non-Latin characters are percent-encoded correctly.
Can a key appear twice?
Yes. Repeated keys are kept, as many APIs expect for list parameters.