Web & SEO

Query String Builder

Build and parse URL query parameters.

Browser-onlyInstant outputLocal data

Query parameters

KeyValue

Filled params

Preview

?tool=json-formatter&lang=en

Encoded query string

Why use this tool

Create query strings from key-value rows and parse query strings back.

Query String Builder simplifies URL parameter editing.

It supports both compose and parse directions.

01Add key-value pairs or paste query text.

02Copy the generated query string.

Confirm the input is the format you intended.

Scan the result before using it in a document, URL, config, or message.

Copy only the output you need.

Are values URL encoded?

Yes. Keys and values are encoded safely.

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