URL Parameters to JSON
Paste a full URL or a raw query string and convert URL parameters into a JSON object.
Duplicate parameters are grouped into arrays, making it easy to inspect
how query values are actually passed to applications and APIs.
This tool helps you quickly understand request parameters, debug API calls, and verify generated URLs during development or testing.
Numeric values are automatically parsed when possible, so the resulting JSON is easier to read and reuse.
All parsing and formatting are performed locally in your browser.
No URLs or parameter data are sent to any server, allowing you to safely inspect query strings without exposing sensitive information.
URL Parameters to JSON Converter
Long URLs are hard to review when parameters are packed into a single query string. This tool converts URL parameters into readable JSON so you can inspect keys, values, duplicated fields, tracking parameters, and API request filters more easily.
When it helps
- Review UTM links: Check
utm_source,utm_medium,utm_campaign, and other campaign values. - Debug API requests: Convert GET request parameters into a structured object for testing or documentation.
- Clean shared links: Spot unnecessary or unexpected parameters before publishing a URL.
Things to watch
Some URLs contain repeated keys, encoded values, or empty parameters. Decide whether repeated keys should become arrays, whether blank values are meaningful, and whether encoded text should be decoded before review.
Articles for this tool
How to Convert URL Parameters to JSON for UTM and API Debugging
Turn long query strings into readable JSON so you can review UTM tags, API filters, duplicated keys, and encoded values more easily.
Turn URL parameters into JSON for faster API debugging
A practical workflow for converting long query strings into JSON so filters, search terms, and pagination values are easier to inspect.
URL Mechanics and Parameter Analysis: From Encoding to JSON Conversion
Explore the structure of URLs, the necessity of Percent-Encoding, and efficient ways to handle complex query parameters in web development.
Recent Articles
Use a SQL formatter before review to make queries easier to read
A practical workflow for formatting long SQL queries so JOIN, WHERE, GROUP BY, and ORDER BY clauses are easier to review.
Visualize GitHub Actions needs dependencies with Mermaid
A practical workflow for reading complex GitHub Actions workflow YAML by separating job dependencies from step details.
Common pitfalls when drawing infrastructure diagrams with Mermaid
A practical guide to organizing node names, arrows, and diagram scope when building infrastructure diagrams with Mermaid in the browser.
Generate Mermaid ER diagrams from SQL DDL to review table relationships
A practical workflow for turning CREATE TABLE statements into Mermaid ER diagrams and checking foreign keys before a schema review.
Design notes for building JOIN queries with a Visual SQL Builder
A practical workflow for using a Visual SQL Builder to assemble SELECT, JOIN, and WHERE clauses without losing track of table relationships.
Convert CSV and JSON to check data faster
A practical workflow for moving between CSV exports, API responses, and spreadsheet-style review without losing track of fields.