Question 1

What is a URL query string?

Accepted Answer

A query string is the part of a URL that comes after the question mark (?). It contains key=value pairs separated by ampersands (&). For example, in https://example.com/search?q=hello&page=2, the query string is q=hello&page=2, where q and page are parameter names.

Question 2

What is URL encoding?

Accepted Answer

URL encoding (percent-encoding) replaces unsafe characters with %XX where XX is the hex byte value. Spaces become %20 or +, ampersands become %26, and so on. This is required so URLs only contain ASCII characters that web servers and browsers can handle reliably.

Question 3

How many parameters can I add?

Accepted Answer

There is no hard limit, but practical limits exist: most browsers support URLs up to 2,083 characters, and many servers reject URLs over 8,192 characters. For large data, use POST requests with a body instead of GET query strings.

Question 4

Can I parse an existing URL?

Accepted Answer

Yes. Switch to the Parse mode, paste a URL, and the tool will extract the protocol, host, path and query parameters into editable rows that you can modify and rebuild.