0 characters · 0 bytes
Waiting for input.
Query String to JSON Converter
Parse query parameters into JSON locally
Decode query strings with repeated keys and bracket notation into formatted JSON, with optional primitive inference.
Need the reverse conversion? JSON to query string.
Output
Converted text preview
No conversion yet
Converted text will appear here.
Conversion runs entirely in this browser.
Deterministic conversion
How this encoding works
A leading question mark is optional. Percent escapes and form-style plus characters are decoded before repeated and bracketed keys are assembled.
Honest limitations
Encoding does not add secrecy or missing types
Primitive inference is optional because query strings do not carry native number, boolean or null types.