How do I use the Query String Builder?

Paste your query input on the left and click Run — results appear instantly on the right. Click "Try Sample" to load an example that demonstrates what the Query String Builder does. Copy the output with the button above the panel, or download it as a file with the icon next to it. Related keywords: query, url, params. If you're looking for a specific variant, check the Related tools strip below.

What can I use the Query String Builder for?

Quick query transformations during development Debugging production payloads without leaving the browser Generating sample data for tests, demos, and documentation Sharing reproducible tool output with teammates

Is the Query String Builder free and private?

Yes — it runs in your browser, requires no signup for basic use, and your data never leaves your device. IPv6 addresses are 128 bits wide — 2^128 ≈ 3.4×10^38 possible addresses, or about 10^28 for every person on Earth.

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Query String Builder

Build ?k=v&k=v strings from key=value lines — repeating keys OK

1 credit

One key=value per line

Query String

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