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Query String Parser

Parse, edit and rebuild URL query parameters.

Local processingYour input stays hereSimple controls

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URL or query string
0 characters · 0 bytes

Repeated keys and empty values are retained. Form-style + decodes to a space; literal plus signs encode as %2B. The rebuilt URL is text only and is never opened automatically.

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Processed locally in your browser

Your input does not need to be uploaded to an EvryNest server. Nothing is saved automatically.

How It Works

  1. 1
    Paste a query

    Enter a URL or query string with parameters.

  2. 2
    Decode and edit

    Review repeated keys and edit decoded values.

  3. 3
    Rebuild safely

    Copy a correctly encoded query without opening the URL.

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Frequently Asked Questions

How does Query String Parser work?

Repeated keys and empty values are retained. Plus signs decode as spaces; literal plus signs are percent-encoded when rebuilt.

Does this tool upload or save my input?

Core processing happens locally in this browser tab. Input and output are not sent to a processing server or stored automatically. Copy and download only occur when you request them.

What happens with large or invalid inputs?

Input limits and errors are shown in the workspace. JSON supports up to 1 MB and 100 nesting levels; large previews can be truncated while downloads retain the full result.