Online URL Encoder Tool

Securely percent-encode your text, query parameters, and URLs instantly. Processing happens in your browser.

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Quick Reference

Space Encoding

Hello World

Result: Hello%20World

Special Characters

user@urlencoder.com

Full URL Encoding

https://urlencoder.com/?q=hello world

What Does a URL Encoder Do?

A URL Encoder translates unallowable characters into a format that can be safely transmitted over the Internet. Because URLs can only contain a limited set of ASCII characters, any character outside this list (such as spaces, emojis, or special symbols like & and ? used as data) must be converted into a valid format.

This process is known as percent-encoding. The encoder replaces the unsafe character with a % followed by two hexadecimal digits representing its ASCII value.

How to Use This URL Encoder

  1. Enter your URL or text: Paste the text or URL you want to encode into the top text area.
  2. Select the appropriate encoding mode: Choose "Encode URI Component" if you are encoding query parameters or data, or "Encode Full URI" if you want to keep the URL structure intact.
  3. Click Encode: If "Live Encode" is unchecked, click the button. Otherwise, it happens instantly as you type.
  4. Copy or download the result: Use the buttons below the output box to copy the encoded text to your clipboard or download it as a text file.

Encode URI vs Encode URI Component

It is critical to choose the correct encoding mode for your needs:

  • Encode URI Component (Recommended): Encodes almost everything, including reserved characters like ?, &, /, and =. Use this mode when you are encoding a specific piece of data to be placed inside a URL parameter (e.g., a search term or an email address).
  • Encode Full URI: Ignores characters that have special structural meaning in a URL. Use this mode when you have a complete, functional URL and you only want to escape spaces or foreign characters without breaking the link.

When Should You Encode a URL?

You should use a URL encoder whenever you need to:

  • Pass user input via HTTP GET requests (query parameters).
  • Share links containing spaces or international characters.
  • Ensure data is not misinterpreted by web servers or APIs.
  • Format UTM tracking tags accurately for digital marketing.

URL Encoding Explained

URL encoding is a mechanism for translating characters that have special meaning in URLs into a safe, standard format. The Internet relies on the ASCII character-set, which means characters like spaces ( ), ampersands (&), and even international letters (like é or ü) must be replaced before they can be sent to a web server.

Without encoding, a web browser might misinterpret the data, leading to broken links or failed API requests.