Query Params
Parse and build URL query parameter strings.
JSON Object
Query String
About Query Params
Query Params parses a URL or query string into individual key-value pairs shown in a table, and lets you build a new query string by adding, editing, or removing parameters. This is much faster than manually reading percent-encoded query strings when debugging API calls or constructing URLs with many parameters. It handles both URL-encoded and form-encoded strings.
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Frequently Asked Questions
Is Query Params free?
Yes, completely free. No signup, no account, no usage limits. Use it as much as you need.
Is my data secure?
All processing happens directly in your browser using JavaScript. Your data is never sent to any server, stored, or shared. It stays entirely on your device.
Does it handle repeated query parameter keys (arrays)?
Yes. Keys that appear multiple times (e.g., ?tag=a&tag=b) are grouped and shown as an array in the parsed output.
Can I paste a full URL with a path and it will extract just the query string?
Yes. Paste the entire URL and the tool will parse the query string portion automatically, ignoring the scheme, host, and path.