TempMail

URL Encoder & Decoder

Instantly format URLs by encoding special characters or decode them back to readable text. Runs 100% locally in your browser. Free, no signup required.

What is a URL Encoder & Decoder?

The URL Encoder & Decoder is a developer utility that converts special characters in a string into format suitable for transmitting over the internet, and vice versa. It safely escapes unsafe ASCII characters using percent-encoding.

URLs can only be sent over the Internet using the ASCII character-set. If a URL contains spaces or special characters like `?`, `&`, or `=`, it can break the web request or cause server errors. This tool instantly formats your strings to ensure safe data transmission in web queries and APIs.

How to Use URL Encoder & Decoder

  • 1

    Select your operation: 'Encode' or 'Decode' using the toggle buttons.

  • 2

    Paste or type your URL or text string into the input box.

  • 3

    The tool will instantly process the string in real-time.

  • 4

    View the result in the output box.

  • 5

    Click the 'Copy' button to copy the formatted string to your clipboard.

Features

  • 100% Free: Unlimited use without any hidden fees or premium locks.
  • No Signup: Instantly start using the utility without registering an account.
  • Works in Browser: Fully client-side processing natively in your web browser.
  • No Data Stored: Your inputs are not saved, logged, or recorded on any server.
  • Mobile Friendly: Perfect responsive design for smartphones and tablets.
  • Instant Results: Lightning fast execution with zero loading screens.

Examples

Encoding a Space:

Hello World becomes Hello%20World

Encoding Query Params:

https://example.com/?q=hello&test becomes https%3A%2F%2Fexample.com%2F%3Fq%3Dhello%26test

Decoding:

Email%20Address becomes Email Address

Frequently Asked Questions

Is this tool free?

Yes, it is 100% free.

Is my data safe?

Yes. The encoding and decoding happens purely in JavaScript on your device.

Does it work on mobile?

Yes, the interface is optimized for mobile screens.

What does encodeURI vs encodeURIComponent mean?

Our encoder uses `encodeURIComponent` to properly encode characters like `&` and `=` which are strictly necessary for secure HTML form and API data transmission.

Why is a space converted to %20?

%20 is the hexadecimal representation of a space character in the ASCII standard.

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