Free online URL query string parser. Parse URL parameters into a clean key-value table with array support, duplicate handling, and URL encoding detection. Edit parameters and export updated URLs. Essential for debugging API calls, web analytics, and link building. 100% browser-based.
100% browser-based — your data never leaves your device
Parse URL query parameters into a readable key-value table.
Copy a full URL or query string and paste it into the input field.
See all query parameters displayed as a clean key-value table with decoded values.
Modify parameters inline, add new ones, or export the parsed data as JSON.
Ctrl+Enter to parse
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URL Query Parser is a free online text tool that parse url query parameters into a readable key-value table. It works entirely in your browser — no downloads, no installations, and no server uploads required. content writers, developers, technical writers use URL Query Parser when they need a fast, privacy-respecting way to process text data without installing additional software. It supports capabilities such as instant parsing, parameter builder, array support. Additional features include url builder. Common use cases include debugging malformed url query strings in web applications, extracting and analyzing tracking parameters from campaign urls, building and testing query parameters for api endpoint development. All processing happens locally using modern browser APIs, which means your data never leaves your device. This makes URL Query Parser ideal for working with sensitive data, proprietary code, or any situation where privacy matters.
URL Query Parser is a free online text tool that helps you parse url query parameters into a readable key-value table. Key capabilities include instant parsing, parameter builder, array support. All processing is done locally in your browser — no data is uploaded, stored, or shared with any server. There are no sign-ups, no file size limits, and no hidden charges. It is commonly used to debugging malformed url query strings in web applications.
Copy a full URL or query string and paste it into the input field.
See all query parameters displayed as a clean key-value table with decoded values.
Modify parameters inline, add new ones, or export the parsed data as JSON.
| Category | Details |
|---|---|
| Input Limits | Maximum input length: Browser memory bound |
| Encoding support: UTF-8, UTF-16, ASCII, ISO-8859-1, Windows-1252 | |
| Supported Formats | Plain text, UTF-8, ASCII, Unicode, Percent-encoding (RFC 3986) |
| Browser Engine |
|
All operations run entirely in your browser using built-in Text APIs. No server uploads, no data storage, and no third-party requests.
URL Query Parser is ideal when you need to debugging malformed url query strings in web applications without installing software or uploading data to a server. Since everything runs in your browser, there is no setup time and no risk of your data being stored on external servers. For for advanced text manipulation within an IDE, consider using VS Code. For for batch text processing on servers, sed/awk (command-line) may be a better fit. URL Query Parser fills the gap between heavyweight desktop tools and insecure online services that require uploading your data.
No. URL Query Parser processes everything entirely in your browser using JavaScript. Nothing you type, paste, or upload is ever transmitted to any server. Your data never leaves your device.
URL query parameters are key-value pairs appended to a URL after a question mark (?). They pass data between web pages, such as search queries, filter options, page numbers, and tracking information.
URL encoding replaces special characters with percent-encoded equivalents (e.g., space becomes %20 or +). Decoding converts them back to their original form. Our tool shows both encoded and decoded values.
Paste a URL and instantly see all query parameters parsed into a clean table.
Add, edit, or remove query parameters visually and export the updated URL.
Handles repeated parameters like ?id=1&id=2 as arrays.
Modify parameters and generate a new URL instantly.
URL Query Parser is useful in a variety of scenarios across different workflows:
Debugging malformed URL query strings in web applications
Extracting and analyzing tracking parameters from campaign URLs
Building and testing query parameters for API endpoint development
Query parameters are often URL-encoded. This tool decodes them automatically so you can read and edit values in plain text.
Use the JSON export to copy parsed parameters for documentation, API testing, or sharing with your team.
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