Query parameter batch editor

Edit duplicate query parameters in a URL by applying explicit set, append and delete operations.

01 Input

YOUR INPUT

02 Output

LOCAL RESULT

QUICK GUIDE / 14

How to use

Select Load example to restore the sample, or replace the labeled inputs with your own values.
Review the options and select Run tool. No input is sent to a server.
Set replaces all values for a key. Append keeps existing values. Delete removes every occurrence of the key.
Inspect the result, then copy or download it. Clear removes visible inputs and output.

A worked example

Load example restores these values.

Absolute URL:
https://example.com/search?tag=a&tag=b&page=1#results

Operations: one JSON array:
[{"op":"set","key":"page","value":"2"},{"op":"append","key":"tag","value":"c"}]

Expected result

https://example.com/search?tag=a&tag=b&page=2&tag=c#results

Scope & limitations

Uses URLSearchParams encoding, including + for spaces. Only absolute HTTP and HTTPS URLs are accepted; inputs are never opened. JSON numbers use JavaScript binary64 precision; keep large exact identifiers as strings. Numeric overflow is rejected.

Preparing offline tools…Everything runs on your device.

Query parameter batch editor

01 Input

02 Output

Related tools

cURL to Fetch

HTTP request parser

Set-Cookie inspector