Paste a URL above and click Parse
Supports full URLs,?key=val strings, and raw query strings
// inspect and rebuild url query parameters cleanly
Inspect, sort, encode, decode, add, remove, and rebuild URL query parameters instantly. Free browser-based tool — no sign-up required.
Paste a URL above and click Parse
Supports full URLs,?key=val strings, and raw query strings
Enter a full URL, a ?key=val string, or raw query string into the input field.
View all parameters in a table. Edit keys or values inline, encode/decode individually, or add new params.
The rebuilt URL updates live. Copy the full URL or just the query string with one click.
A URL query parameter inspector lets you break apart the ?key=value portion of any URL into individual components, view them clearly, edit them, and reassemble a clean URL. Invaluable for web developers, SEO specialists, and QA testers.
A query parameter is a key-value pair appended to a URL after the ? symbol. Multiple parameters are separated by &. For example, in https://example.com?page=2&sort=asc, page and sort are query parameters.
Yes. You can paste ?key=value&foo=bar (with the leading ?) or raw key=value&foo=bar (without). The tool detects the format automatically and parses it correctly.
URL encoding replaces special characters with percent-encoded equivalents (e.g., space becomes %20, & becomes %26). Decoding reverses this. Both operations are available per-parameter or for all values at once.
Yes. Some APIs send multiple values for the same key (e.g., tag=js&tag=css). The inspector displays all occurrences separately so you can view, edit, or remove each one individually.
No. All parsing, editing, and rebuilding happens entirely in your browser using JavaScript. Your URLs and query strings never leave your device.
Yes. Click the + Add Param button to insert a new blank row. Fill in the key and value — the rebuilt URL at the bottom updates instantly to reflect your changes.
A URL query parameter inspector is a developer tool that parses the query string portion of a URL into a readable, editable table. Instead of squinting at ?utm_source=newsletter&utm_medium=email&utm_campaign=june2024&ref=footer&page=3, you get a clear breakdown of every key-value pair, with options to sort, encode, decode, add, remove, and reassemble them into a clean URL.
Web URLs are made up of several components: the protocol (https://), the host (example.com), the path (/products), and the query string (?color=blue&size=lg). The query string is where most of the dynamic data lives — search terms, filters, pagination, analytics tracking codes, API keys, session tokens, and more.
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Query parameters are one of the most ubiquitous mechanisms in web development. They power everything from e-commerce product filters (?category=shoes&color=red&size=10) to REST API requests (?limit=50&offset=100&sort=created_at) to analytics tracking (?utm_source=google&utm_medium=cpc).
Understanding and manipulating query parameters is a core skill for:
Raw parameter values often contain characters that are not safe in a URL — spaces, ampersands, equals signs, slashes, and many others. URL encoding (also called percent-encoding) replaces these characters with a % followed by two hexadecimal digits representing the character's UTF-8 byte value.
Common encodings: space → %20 (or + in form data), & → %26, = → %3D, / → %2F, @ → %40. This tool lets you decode any encoded value to its human-readable form, or encode a raw value so it can be safely embedded in a URL.
One subtle but important SEO and caching concern is parameter order. From a functional standpoint, ?a=1&b=2 and ?b=2&a=1 are identical — they carry the same data. But from a caching, deduplication, and canonical URL perspective, they look like different pages to systems that don't normalize parameter order.
Sorting parameters alphabetically and enforcing that ordering consistently on your server is a best practice for reducing duplicate content, improving CDN cache hit rates, and building predictable canonical URLs. This tool's sort feature lets you quickly see what your URL looks like with alphabetically ordered parameters.
Pagination: ?page=3&per_page=25 or ?offset=50&limit=25 — controls which subset of results to return.
Filtering and search: ?q=javascript&category=tutorials&sort=newest — encodes user-selected filter state into the URL so it can be bookmarked and shared.
UTM tracking: ?utm_source=google&utm_medium=cpc&utm_campaign=brand&utm_term=developer+tools — Google Analytics campaign parameters appended to URLs in ads and email campaigns.
API authentication: ?api_key=abc123&format=json&callback=handleResponse — common in older REST APIs, though modern APIs prefer Authorization headers.
Feature flags: ?debug=true&feature_x=enabled — override flags passed to the frontend for testing.
Marketing URLs are often bloated with tracking parameters that add no user value and can cause duplicate content issues if left in sitemaps or canonical tags. Common ones include fbclid (Facebook Click ID), gclid (Google Click ID), msclkid (Microsoft Ads), mc_eid (Mailchimp), and the entire family of utm_* parameters.
Using this tool, you can quickly identify and remove tracking parameters from a URL, then copy the cleaned version. This is useful for sharing links without unnecessary tracking tails, building canonical URLs, and constructing clean URLs for internal linking.
When you paste a URL or query string and click Parse, the tool extracts the query string component and splits it on & delimiters (handling & entities automatically). Each segment is then split on the first = to separate key from value. Keys and values are decoded from percent-encoding for display, and you can re-encode them individually or all at once.
As you edit parameters in the table, the rebuilt URL at the bottom updates in real time. The rebuilt URL always reflects the current state of all parameters in their current order, with the original base URL (protocol + host + path) preserved.