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When adding unusual characters to a URL parameter, which is also known as percent encoding, this online URL Encoder/Decoder tool comes in handy. Unallowable characters are replaced by a percent (percent sign) and two extra hexadecimal values during URL encoding. If you want to determine the source of an email campaign or a newsletter, URL decoding is useful.
Only the ASCII character set should be used to transfer URLs to the Internet. Because these URLs contain characters that are not part of the ASCII set, they must be transformed to an ASCII format that can be used. This URL encoding uses a percent symbol (%) followed by two hexadecimal numbers to replace unsafe ASCII characters. A plus sign (+) or percent 20 is used for a space in URL encoding.
The query string, also known as the Uniform Resource Identifier, is commonly encoded with URL encoding (URI). Users only care about URL encoding when it comes to special symbols. If you need your URL encoded or decoded, this free online URL Encoder/Decoder tool will suffice.