Online URL Encoder / Decoder

Search Engine Optimization

URL Encoder / Decoder

Enter the text that you wish to encode or decode:

About URL Encoder / Decoder

A URL Encoder/Decoder, also known as percent-encoding, is a tool used to convert special characters and non-ASCII characters into a format that is safe for use within a Uniform Resource Locator (URL). URLs, which are web addresses used to identify and access resources on the internet, have specific rules regarding the characters that can be included in them. Certain characters, such as spaces or non-alphanumeric characters, cannot be included directly in a URL and must be encoded before being transmitted.

URL Encoding:

URL encoding involves converting characters into a format that can be safely transmitted within a URL. This is typically achieved by replacing each non-ASCII character with a percent sign (%) followed by two hexadecimal digits representing the character's ASCII code.

For example:

  • Space ( ) is encoded as %20
  • Ampersand (&) is encoded as %26
  • Plus sign (+) is encoded as %2B

URL Decoding:

URL decoding, on the other hand, reverses the encoding process by converting percent-encoded characters back to their original form. This is done by identifying percent-encoded sequences in a URL and replacing them with the corresponding characters.

For example:

  • %20 is decoded as a space ( )
  • %26 is decoded as an ampersand (&)
  • %2B is decoded as a plus sign (+)

How URL Encoder/Decoder Works:

  1. Input URL: The user enters the URL containing characters that need to be encoded or decoded into the URL Encoder/Decoder tool.

  2. Select Action: The user selects whether they want to encode or decode the URL.

  3. Processing: The tool processes the input URL, identifying characters that need to be encoded or decoded according to the selected action.

  4. Conversion: For encoding, the tool replaces non-ASCII characters with their percent-encoded counterparts. For decoding, it replaces percent-encoded sequences with the original characters.

  5. Display Results: The URL Encoder/Decoder displays the converted URL, allowing the user to copy and use it as needed.

Key Features of URL Encoder/Decoder:

  • Encoding: Converts non-ASCII characters into percent-encoded format for safe transmission in URLs.
  • Decoding: Reverses URL encoding by converting percent-encoded sequences back to their original characters.
  • Character Sets: Supports encoding and decoding of various character sets, including UTF-8 and ASCII.
  • User-Friendly Interface: Provides a simple and intuitive interface for entering URLs and selecting encoding or decoding actions.

Benefits of Using URL Encoder/Decoder:

  1. URL Safety: Ensures that URLs containing special characters are properly formatted and safe for transmission over the internet.
  2. Compatibility: Helps maintain compatibility with web standards and protocols by following URL encoding rules.
  3. Data Integrity: Prevents errors and data corruption caused by invalid characters in URLs.
  4. Accessibility: Allows for the inclusion of non-ASCII characters in URLs, making web resources accessible to users worldwide.

Applications of URL Encoder/Decoder:

  • Web Development: Used in web development to encode and decode URLs dynamically within web applications.
  • Data Transmission: Employed in data transmission processes, such as form submissions or API requests, to ensure URL safety and integrity.
  • URL Manipulation: Integrated into URL manipulation tasks, such as building query strings or constructing dynamic URLs in web applications.
  • SEO Optimization: Used to encode URLs containing special characters in SEO-friendly formats for better search engine visibility.

Best Practices for Using URL Encoder/Decoder:

  • Encode Before Transmission: Always encode URLs containing special characters before transmitting them over the internet.
  • Use Valid Characters: Ensure that URLs only contain valid characters allowed by the URL specification.
  • Be Consistent: Maintain consistency in URL encoding and decoding practices across web applications and systems.
  • Test Encoding/Decoding: Test URL encoding and decoding processes to verify correct functionality and data integrity.


A URL Encoder/Decoder is a valuable tool for converting special characters and non-ASCII characters into a format that is safe for use within URLs. By encoding and decoding URLs according to web standards, URL Encoder/Decoder tools ensure URL safety, compatibility, and data integrity, making them essential for web development, data transmission, and URL manipulation tasks. Incorporating URL Encoder/Decoder tools into web development workflows and data transmission processes helps maintain web standards compliance and ensures a seamless user experience across web applications and systems.