How it works
Paste or type your text in the box and Query String to JSON transforms it instantly — no button to press. The result updates live as you edit, runs entirely in your browser, and you can copy the output with one click.
Examples
- “page=2&q=hello%20world” → “{ ⏎ "page": "2", ⏎ "q": "hello world" ⏎ }”
Frequently asked questions
How do I use the Query String to JSON?
Paste or type your text into the input box. Query String to JSON processes it live and shows the result immediately — then just copy it. There is no limit on how much text you can process.
Is my data private?
Yes. The Query String to JSON runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.
Is the Query String to JSON free?
Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on developer tools and the rest of the platform, you can use it as often as you like.
Popular in Developer Tools
Hash Generator (SHA)
Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes from text.
Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal.
URL Encode / Decode
Percent-encode or decode URLs and query parameters.
JWT Decoder
Decode a JSON Web Token to inspect its header and payload.