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URL Query String Builder

Build a URL query string from key=value lines.

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How it works

Paste or type your text in the box and URL Query String Builder transforms it instantly — no button to press. The result updates live as you edit, runs entirely in your browser, and you can copy the output with one click.

Examples

  • “page=2 ⏎ sort=name ⏎ q=hello world” → “?page=2&sort=name&q=hello%20world”

Frequently asked questions

How do I use the URL Query String Builder?

Paste or type your text into the input box. URL Query String Builder processes it live and shows the result immediately — then just copy it. There is no limit on how much text you can process.

Is my data private?

Yes. The URL Query String Builder runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.

Is the URL Query String Builder free?

Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on developer tools and the rest of the platform, you can use it as often as you like.

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