Use this URL Encoder/Decoder for free especially when adding special characters to a URL parameter. Also known as percent encoding, URL encoding replaces unallowable characters with a % and additional two hexadecimal values. Decoding finds significance should you want to know an email campaign or newsletter’s referrer as well as that of AdWords campaign.
How the URL Encoder/Decoder Tool Works:
Simply input a string of text to encode/decode quickly then click on “Check” to view the results.