âš¡ Developer Tools

Query String Builder

Build a URL query string from key-value pairs.

About the Query String Builder

Build a URL query string from key-value pairs. It runs entirely in your browser — nothing is uploaded to a server, so it is fast and private. Just use it and go.

How to use the Query String Builder

  1. Enter or paste your input into the tool above.
  2. Adjust any options to fit what you need.
  3. Copy or download the result.

Frequently asked questions

Is the Query String Builder free?

Yes. This tool is completely free to use, with no sign-up required.

Is my data safe?

Everything runs locally in your browser. Your input never leaves your device.

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