JSON to Query String — Free & Private
Serialize JSON to URL query strings with nested bracket notation, configurable array formats, and optional URL encoding. Runs entirely in your browser.
Your data never leaves your browser
JSON input
Query string
About this tool
JSON→URL paramsNested keysArray formatsURL encodeCopy & download
How to use
- Paste a JSON object.
- Choose array format (brackets, indices, comma, or repeat).
- Copy the query string — optionally prefixed with ?.
Examples
Nested object
{"name":"Ada","tags":["js","go"]}?name=Ada&tags[]=js&tags[]=go