Query String Parser
Parse full URLs or raw query strings instantly. Extract parameters, decode percent-encoded values, preserve duplicate keys and generate readable JSON directly in your browser.
Parse Query String
Convert URL parameters into readable JSON
URL / Query String Input
Paste a full URL or raw query string
Parsed JSON Output
Readable query parameter JSON
Waiting
Ready to Parse
Enter a URL or query string and click Parse Query.
Input Size
0 B
Output Size
0 B
Parameters
0 B
Unique Keys
0%
Browser-Based Query Parsing
This implementation parses URLs and query strings directly in your browser with JavaScript. Parsing, decoding, copying and statistics do not require your input to be sent to a server.
Parser Features
Parse Query Strings in Seconds
Extract URL parameters and convert them into readable JSON with browser-based processing.
Instant Parsing
Parse full URLs or raw query strings with one click.
Duplicate Keys
Preserve repeated parameter names as JSON arrays.
Automatic Decoding
Decode percent-encoded names, values and plus-sign spaces.
Copy & Download
Copy parsed JSON or save it as a JSON file.
Three Simple Steps
How to Parse a Query String Online
Enter URL or Query
Paste a full URL or raw query string into the editor, upload a file or drag and drop content.
Parse Query
Click Parse Query to validate the input and remove unnecessary formatting.
Copy or Download
Review the parsed JSON, copy it to the clipboard or download a JSON file.
Query String Parsing Guide
What Is a Query String Parser?
A Query String Parser extracts parameters from the portion of a URL that follows the question mark. It converts parameter names and values into a structured format that is easier to inspect, debug and reuse.
This tool accepts either a complete URL or a raw query string. It uses browser URL parsing behavior to decode percent-encoded values, interpret plus signs as spaces in form-style query data and preserve repeated keys when array mode is selected.
Query String Parsing Example
Input:
?q=hello%20world&tag=js&tag=webParsed JSON:
{
"q": "hello world",
"tag": ["js", "web"]
}Why Parse Query Strings?
Long URLs can contain many encoded parameters that are difficult to read manually. Parsing turns them into structured JSON so developers can inspect filters, tracking values, redirect parameters and API request data more easily.
Repeated keys are especially important because query strings may contain the same parameter name more than once. Array mode preserves all values instead of silently discarding data.
How Are Query Parameters Parsed?
A query string contains name-value pairs separated by ampersands. Parameter names and values are typically separated by an equals sign. Browser parsing rules decode percent-encoded sequences and handle common form-style query conventions.
This converter also accepts complete URLs and extracts only their search parameters. URL fragments after a hash sign are not treated as part of the query string.
Query Strings vs URL Paths
The URL path identifies a resource location, while the query string commonly supplies optional parameters such as search terms, filters, sorting choices, pagination values or campaign tags.
For example, in /products?page=2&sort=price, the path is /products and the query parameters are page and sort.
Common Uses for Query String Parsing
API Debugging
Inspect request parameters and encoded values in API URLs.
Analytics Links
Review UTM tags and other campaign tracking parameters.
Search & Filters
Inspect pagination, sorting, category and search values.
Redirect Debugging
Read nested and percent-encoded callback or redirect parameters.
Related Tools
More Developer Utilities
JSON Formatter
Beautify JSON with readable indentation and line breaks.
Open Tool →JSON Validator
Check JSON syntax and detect parsing errors.
Open Tool →UUID Generator
Generate unique UUID values for apps and databases.
Open Tool →Developer Tools
Browse more free utilities for developers and coding.
Browse Tools →FAQ
Query String Parser FAQs
Parse Query String Now
Paste a URL or query string and generate readable parameter JSON in seconds.
Parse Query →