The rule of thumb is that URL transmitted over the Internet should be strictly in ASCII character-set.
The reason why URL needs to be encoded is because it can contain non-ASCII characters.
The encoding of URL replaces the non-ASCII characters with a "%" character which is followed by two hexadecimal digits.
Also, a URL cannot contain space between them and this is encoded by replacing it with a plus (+) sign or with %20.
Using this tool, you can encode or decode strings or URL which is safe to transfer over the Internet. Besides, the tool is client side driven, unlike other tools that rely on server-side code. Hence, this is a tool that executes fast and can potentially save your valuable time on the Internet.
The tool encode or decode input data that conforms to the Uniform Resource Locators Specification - URL (RFC 1738).