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Free URL Encoder / Decoder Tool

Enter the text to be encoded or decoded.:



About Free URL Encoder / Decoder Tool

Free URL Encoder / Decoder Tool For All SEO tool free 

Use the above online tool to encode or decode a text string. For universal compatibility, URIs must be encoded in the same way. To map the vast array of characters used throughout the world into the 60 or so permitted characters in a URI, a two-step approach is required:

Convert the character string to bytes using the UTF-8 encoding.

Each non-ASCII letter or digit byte should be converted to percent HH, where HH is the byte's hexadecimal value.

For example, the string François would be encoded as Fran percent C3 percent A7ois.

(The "ç" in UTF-8 is encoded as two bytes C3 (hex) and A7 (hex), which are then written as "percent c3" and "percent a7," respectively.) This can result in a relatively long URI (up to 9 ASCII characters for a single Unicode letter), however

The aim is for browsers to only display the decoded version, and many protocols can send UTF-8 without escaping the percent HH.
URL Encoder and Decoder
Use the above online tool to encode or decode a text string. For universal compatibility, URIs must be encoded in the same way. To map the vast array of characters used throughout the world into the 60 or so permitted characters in a URI, a two-step approach is required:

Convert the character string to bytes using the UTF-8 encoding.

Each non-ASCII letter or digit byte should be converted to percent HH, where HH is the byte's hexadecimal value.

For example, the string François would be encoded as Fran percent C3 percent A7ois.

(The "ç" in UTF-8 is encoded as two bytes C3 (hex) and A7 (hex), which are then written as "percent c3" and "percent a7," respectively.) This can result in a relatively long URI (up to 9 ASCII characters for a single Unicode letter), but the intention is for browsers to just display the decoded version, and many protocols can transmit UTF-8 without the % HH escaping.

What exactly is URL encoding, and how does it function?

URL encoding is the process of replacing certain characters in a URL with one or more character triplets composed of the percent symbol " percent " followed by two hexadecimal integers. The numeric value of the replacement character is given by the triplet's two hexadecimal digits (s).

Because the encoding approach may be used to any URI (Uniform Resource Identifier), including URNs, the moniker URL encoding is a bit misleading (Uniform Resource Names). As a consequence, instead of "percent-encoding," use "percent-encoding."

Which Characters Can Be Used in a URL?

The characters that can be used in a URI are divided into reserved and unreserved characters (or a percent character as part of a percent-encoding). Unreserved characters do not have a special meaning when they are used, whereas reserved characters do. When using percent-encoding, characters that are typically disallowed are represented by approved characters. The sets of reserved and unreserved characters, as well as the contexts in which certain reserved characters have special importance, have changed slightly with each edition of the standards that regulate URIs and URI schemes.

According to RFC 3986, the characters in a URL must be drawn from a predefined set of unreserved and reserved ASCII characters. Additional characters are not permitted in a URL.


Non-reserved characters can be encoded, but they should not be. The characters that have no reservations are:

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z a b

c d e f g h I j k l m n o p q r s t u v w x y z 0 1 2 3 4 5 6 7 8 9

Only under particular conditions do the reserved letters need to be decoded. The reserved characters are as follows:

!*'() ;: @ & = + $, /? percent # []

Encoding/Decoding a Text RFC 3986 does not define which character encoding table non-ASCII characters (such as the umlauts ä, ö, ü) should be encoded in.

must be encoded with Because URL encoding involves a pair of hexadecimal digits, and a pair of hexadecimal digits, and a pair of hexadecimal digits, and a pair of hexadecimal digits, and a pair

Because 8 bits equals digits, non-ASCII characters might theoretically be encoded using one of the 8-bit codes.

a page (e.g. ISO-8859-1 for umlauts).

However, because each language has its own 8-bit code page, maintaining all of these various 8-bit code pages is difficult.

would be inconvenient. Some languages have too many characters to fit on a single 8-bit code page (e.g. Chinese). As a consequence, RFC 3629 was created.

advises using the UTF-8 character encoding table to encode non-ASCII characters. This is taken into account by

the following tool, which lets you choose between ASCII and UTF-8 character encoding tables

When would you use URL encoding, and why would you?
When data is entered into HTML forms, the form field names and values are encoded and sent to the server in an HTTP request message using the methods GET or POST, or, more traditionally, via email. The default encoding is based on an early version of the general URI percent-encoding rules, with a few adjustments including newline normalization and replacing spaces with "+" rather than "percent 20." The MIME type for data encoded in this manner is Application/x-www-form-urlencoded, and it is currently documented (although in an outdated manner) in the HTML and XForms standards. Furthermore, the CGI definition describes how web servers decode and make this type of data available to applications.

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