URL Decoder is a simple and free online tool that quickly and easily decodes your data to human-readable text.
URL decoding is also known as "Percent decoding" because the encoded hexadecimal digits are preceded by a percent sign (%).
Decode query string
Query parameters should not contain any characters, since there are some reserved characters for URLs. Hence all query parameters should be encoded. This URL decoder can decode existing queery parameters so you can see original string.
URL encode validator
This URL Decoder also works as validator and validates if your URL encoded string is valid. If the encoded string is valid, it will print decoded value. Otherwise it will give you an error message.