Convert JSON to Query String Online
URL query strings are the standard way to pass parameters in GET requests, and they follow the key=value&key2=value2 format. When you have a JSON object with the parameters you want to send and need to convert it to a query string for an API call, URL construction, or HTTP redirect, this converter does the job instantly. It serializes each key-value pair from your JSON object into proper URL query string format, URL-encoding values that contain special characters. Nested objects can be serialized using bracket notation (key[subkey]=value) compatible with PHP, Ruby on Rails, and many other backend frameworks. This is an essential tool for API development, testing HTTP endpoints, and building dynamic URLs in web applications.
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FAQ
- What format does the JSON input need to be?
- The converter expects a flat or shallowly nested JSON object, like {"name":"Alice","age":"30"}. Each top-level key becomes a query parameter name.
- How are special characters in values handled?
- Values are URL-encoded (percent-encoded), so spaces become %20, & becomes %26, etc. This ensures the query string is safe to use in a URL.
- How are arrays in the JSON handled?
- Array values are typically serialized as repeated parameters (key=val1&key=val2) or bracket notation (key[]=val1&key[]=val2) depending on the framework convention.