Online URL Encoder / Decoder

Search Engine Optimization

URL Encoder / Decoder

Enter the text that you wish to encode or decode:

About URL Encoder / Decoder

Use our  Online URL Encoder / Decoder tool to either encode or decode a string of text. For worldwide interoperability, URIs have to be encoded uniformly. To map the wide range of characters used worldwide into the 60 or so allowed characters in a URI, a two-step process is used:

Convert the character string into a sequence of bytes using the UTF-8 encoding
Convert each byte that is not an ASCII letter or digit to %HH, where HH is the hexadecimal value of the byte
For example, the string: François ,would be encoded as: Fran%C3%A7ois 

(The "ç" is encoded in UTF-8 as two bytes C3 (hex) and A7 (hex), which are then written as the three characters "%c3" and "%a7" respectively.) This can make a URI rather long (up to 9 ASCII characters for a single Unicode character), but the intention is that browsers only need to display the decoded form, and many protocols can send UTF-8 without the %HH escaping.

What is URL encoding
URL encoding stands for encoding certain characters in a URL by replacing them with one or more character triplets that consist of the percent character "%" followed by two hexadecimal digits. The two hexadecimal digits of the triplet(s) represent the numeric value of the replaced character.

The term URL encoding is a bit inexact because the encoding procedure is not limited to URLs (Uniform Resource Locators), but can also be applied to any other URIs (Uniform Resource Identifiers) such as URNs (Uniform Resource Names). Therefore, the term percent-encoding should be preferred.

Which Characters Are Allowed in a URL
The characters allowed in a URI are either reserved or unreserved (or a percent character as part of a percent-encoding). Reserved characters are those characters that sometimes have special meaning, while unreserved characters have no such meaning. Using percent-encoding, characters which otherwise would not be allowed are represented using allowed characters. The sets of reserved and unreserved characters and the circumstances under which certain reserved characters have special meaning have changed slightly with each revision of specifications that govern URIs and URI schemes.

URL encoding, also known as Percent-encoding, is a mechanism for encoding information in a Uniform Resource Identifier (URI) under certain circumstances. Although it is known as URL encoding it is, in fact, used more generally within the main Uniform Resource Identifier (URI) set, which includes both Uniform Resource Locator (URL) and Uniform Resource Name (URN). As such it is also used in the preparation of data of the "application/x-www-form-urlencoded" media type, as is often used in the submission of HTML form data in HTTP requests.