The GET Request String Parser is a handy tool for breaking down HTTP GET request strings into parameter-value pairs and decoding URL-encoded sequences if necessary. By using this parser, you can easily extract and analyze the individual components of a GET request.

The calculators encode string to base64 string and decode back to original string. Special characters (+/) , generally produced by base64 algorithm, can be replaced by the data provided in additional parameter.

The calculator converts a colour given in RGB integers into a hexadecimal string suitable, for example, for css.

This calculator generates palette of colors from starting color to ending color, using maximum diversity, "rainbow" style.