How do I use the URL Encoder and Decoder?

The URL Encoder Decoder tool allows you to safely encode reserved, unsafe, or unprintable characters into a valid URL format, and decode URL-encoded text back to its original form. Whether you are generating a dynamic query string for an API or fixing a broken link, this tool ensures accurate conversion for web development. Select whether you want to Encode or Decode. Enter or paste your text or URL into the input area. The output area will automatically display the converted result. Use the provided presets to quickly load common examples. Click the copy icon to copy the generated result to your clipboard.

Developer Tools

URL Encoder & Decoder

Secure, client-side Uniform Resource Identifier parser. Safely encode unsafe characters or decode percent-encoded URLs instantly.

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Encode URL/Text

INPUT

ENCODING STANDARD

Encodes all special chars (Recommended).

Input Length: 36Output Length: 38Inflated by: 2 chars

Processed Output

OUTPUT

https://google.com?q=encoder%26decoder

Key URL Components Breakdown

Automatically extracted from your input:

PROTOCOL/SCHEME

Defines how data is sent (e.g., http, https, ftp).

https:

HOST (HOSTNAME)

The server name or IP address (e.g., google.com, 192.168.1.1).

google.com

PATH

Specific location of the resource on the server (e.g., /images/logo.png).

QUERY STRING

Optional parameters starting with ? (e.g., ?id=100&user=test).

?q=encoder&decoder

Presets & Sample Patterns

Encode Patterns (Plain to URI)

Decode Patterns (URI to Plain)

Popular Character Encodings Table

Quick reference chart of standard URL character encodings and their hexadecimal/decimal values. Click any row to inject it.

Character	Encoded Value	Decimal Code
;	%3B	59
:	%3A	58
@	%40	64
&	%26	38
=	%3D	61
+	%2B	43
$	%24	36
,	%2C	44
/	%2F	47
?	%3F	63
%	%25	37
#	%23	35
[	%5B	91
]	%5D	93
	%20	32
"	%22	34
<	%3C	60
>	%3E	62
{	%7B	123
}	%7D	125
\|	%7C	124
\	%5C	92
^	%5E	94
~	%7E	126

URL Encoding Educational Studio

Master the core concepts of percent-encoding, reserved characters, and URI grammar specifications.

A. What is URL Encoding & Why Is It Needed?

URL encoding (percent-encoding) is a mechanism for encoding information in a Uniform Resource Identifier (URI) under certain circumstances.

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Reserved Characters

Characters like ?, &, =, and / have special meaning in URLs as structural delimiters. If they are used as part of normal data inside parameters, they must be percent-encoded to prevent interpretation conflicts.

Examples:? → %3F, & → %26, = → %3D

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Unsafe & Special Characters

Characters that have no special meaning but are unsafe to transmit across networks (like spaces, non-ASCII characters, emojis) must be escaped into hexadecimal ASCII values.

Examples:[Space] → %20, [Emoji] 🚀 → %F0%9F%9A%80

B. The Percent-Encoding Formula

How does a browser transform raw characters into a valid URI-encoded sequence? Here is the exact protocol:

Step 1: Check Character Classification

If the character is in the "Unreserved" set (letters A-Z, a-z, digits 0-9, and -, _, ., ~), leave it unchanged. Otherwise, it must be escaped.

Step 2: Map to Hexadecimal ASCII

Find the byte representation of the character (using UTF-8 for non-ASCII elements) and convert it to its equivalent two-digit hexadecimal value.

Example for Space character:

Space ASCII decimal code: 32
Convert 32 to base-16: 20
Prefix with percent: %20

Step 3: Choose Encoding Standard

Decide whether to encode as a Component (encodes all delimiters), Full URI (preserves structural markers), or Form Urlencoded (encodes spaces as + instead of %20).

C. Crucial URL Encoding Tips & Facts

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The '+' Space Convention

In standard query strings (like form submissions with application/x-www-form-urlencoded), spaces are encoded as a plus sign +. In paths, they must be %20. Our intelligent engine decodes both formats effortlessly!

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UTF-8 and Modern Web standard

Historically, characters were encoded using ASCII. Modern systems rely on UTF-8, which allows emojis, Arabic/Chinese scripts, and special symbols to be converted into multibyte percent sequences safely.