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URL Query String Parser & Builder

Parse URL parameters into an editable key-value grid or build encoded query strings with array and JSON exports.

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Parsed Parameters (0)

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What is URL Query String Parser & Builder?

The Query String Parser breaks a URL’s query string into readable key-value pairs, decoding percent-encoded values along the way. Edit values, add or remove parameters, and copy the rebuilt URL with correct encoding. It is handy for debugging tracking links, API requests, UTM parameters and redirect URLs.

How to use URL Query String Parser & Builder

  1. 1

    Paste a URL

    Paste a full URL or just the query string.

  2. 2

    Edit parameters

    Change keys or values, add parameters or delete them.

  3. 3

    Copy the new URL

    Copy the rebuilt, correctly encoded URL.

Frequently asked questions

Are encoded values decoded?

Yes. Values like %20 are shown as readable text and re-encoded when the URL is rebuilt.

What about repeated keys?

Each occurrence is listed separately, so parameters such as tag=a&tag=b are preserved.

Can I build a URL from scratch?

Yes. Clear the input and add parameters one by one.

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