URL Encoder

About URL Encoder

URL Encoder is a free online developer tool that converts text or URL components into a percent-encoded representation. The tool uses the browser's standard encodeURIComponent() function and performs the encoding directly on your device.

URL encoding is commonly used when text contains spaces, Unicode characters, punctuation or other characters that need to be represented safely inside a URL component. For example, a space is represented as %20 by encodeURIComponent().

How To Use the URL Encoder

1. Enter or paste a URL component or text into the input box.
2. Click Encode URL.
3. Review the percent-encoded result.
4. Click Copy Output to copy the result.
5. Use Download if you want to save the encoded result as a text file.

What Is URL Encoding?

URL encoding, also known as percent encoding, is a method of representing characters in a URL component using percent signs followed by hexadecimal byte values. It is especially useful when text contains characters that have special meaning in URLs or characters that cannot be used directly.

Unicode text is first represented using UTF-8 bytes and those bytes can then appear as percent-encoded sequences. This allows text such as non-Latin characters to be safely represented in URL components.

URL Encoding Example

If you enter:

Hello World!

The encoder produces a URL-component encoded value similar to:

Hello%20World!

Characters such as spaces and reserved URL punctuation may be represented using percent encoding when processed as a URI component.

encodeURI() vs encodeURIComponent()

JavaScript provides both encodeURI() and encodeURIComponent(). They are designed for different situations.

• encodeURI() is intended for encoding a complete URI while preserving characters that provide URI structure.
• encodeURIComponent() is intended for encoding an individual URI component and encodes a broader set of URL-reserved characters.

This tool uses encodeURIComponent(), making it suitable for encoding individual URL parameters, query values, path components and general text that needs component-style URL encoding.

Privacy and Browser-Based Processing

The encoding operation is performed locally in your browser. The tool does not need to send the text to a server to perform the conversion. This makes the tool convenient for working with text that you prefer to process locally.

As with any web application, you should still avoid entering passwords, API keys or other sensitive information into websites unless you understand the site's privacy and security practices.

Features

• Standard browser-based URL component encoding.
• Supports Unicode and UTF-8 text.
• No external encoding library required.
• Processing happens directly in the browser.
• Copy encoded output.
• Download encoded output.
• Input and output statistics.
• Keyboard shortcut with Ctrl + Enter or Cmd + Enter.
• No registration required.

Limitations

• This tool uses encodeURIComponent(), so it is designed primarily for URL components rather than automatically parsing and encoding every component of a complete URL.
• Existing percent-encoded sequences are encoded again. For example, %20 becomes %2520. Use the encoder only when double encoding is intended.
• URL encoding does not encrypt or secure data. Percent-encoded text can be decoded easily.

Pros & Cons

Pros	Cons
Free and easy to use	Uses component-style encoding
Runs directly in the browser	Does not automatically parse full URLs
Supports Unicode text	Existing encoded text can be double-encoded
No external library required	URL encoding is not encryption

Frequently Asked Questions