URL Params — Query String Inspector

Long URLs with query strings are unreadable. URL Params breaks them apart into individual named cards so you can see every parameter at a glance.

What it does

Paste a full URL or just the query string portion (?foo=bar&baz=qux). The tool parses every key-value pair and renders each as a card showing the parameter name, its decoded value (percent-encoding resolved), and a copy button.

Large index numbers on each card make it easy to reference specific parameters when debugging with a colleague.

When it's useful

• Debugging OAuth redirect URLs with state parameters
• Inspecting analytics tracking parameters on campaign links
• Reading encoded JSON embedded in a query string
• Checking what a third-party integration is passing in callbacks

The browser DevTools Network tab shows query strings but requires navigating to the right request. URL Params is faster for one-off inspection.