Query String Parser — URL Parameters to JSON
Parse URL query strings into JSON and back. Decode, inspect, and build URL parameters with ease.
- Handles full URLs, bare query strings, and hash-prefixed strings
- Repeated keys are collected into an array in JSON output
- Values are automatically URL-decoded (e.g.
hello+world→hello world)
Why Choose Our Client-Side Query String Parser?
Perform calculations and utilities securely, quickly, and directly in your browser with 100% local client-side memory execution.
100% Secure & Local
Your data never leaves your device. All calculations, parsing, and formatting are performed locally in sandboxed client memory.
High-Fidelity Formats
Preserves values, parameters, settings, and configurations precisely during Query String Parser.
Blazing Fast Speeds
Powered by client-side browser workers, updates happen instantly without upload delays or network queue times.
Process in Three Simple Steps
Provide Inputs
Paste, type, or drag & drop your raw values or files directly into the interface above.
Configure & Apply
Choose your conversion settings, custom formats, or parameters and review the real-time preview results.
Save Output
Instantly copy the finalized output to your clipboard or download it as a local file.
utilities_output
Ready for use
Frequently Asked Questions about Query String Parser
Yes, Query String Parser is 100% free with no sign-up, no watermarks, and no usage limits.
Query String Parser runs entirely in your browser — no data is ever sent to our servers. Your content stays on your device.
Once the page has loaded, Query String Parser works fully offline in your browser — no internet connection is required.
For text-based conversions there is no practical limit. The tool handles data up to several hundred kilobytes without issues.
Yes, Query String Parser is fully responsive and works in all modern browsers on desktop, tablet, and mobile.