URL Encoder/Decoder

Encode and decode URLs for safe transmission. Handle special characters and spaces properly. Perfect for web developers and SEO specialists. Real-time encoding and decoding with multiple format support.

URL Encoder

Enter URL to Encode

URL Encode

Form URL Encode

Component Encode

URI Encode

URL Decoder

Enter URL to Decode

URL Decode

Form URL Decode

Component Decode

URI Decode

Encoding/Decoding Result

Input Type: -

Encoding Type: -

Input Length: 0

Output Length: 0

Status: Ready

Encoding Types

URL Encode

Standard URL encoding for web addresses

Form URL Encode

HTML form submission encoding

Component Encode

URL component encoding

URI Encode

Uniform Resource Identifier encoding

Base64 Encode

Base64 binary-to-text encoding

HTML Encode

HTML entity encoding

Quick Examples

Simple URL

https://example.com

URL with Query

https://example.com/search?q=test

Special Characters

https://example.com/path?param=hello world

Unicode Characters

https://example.com/测试?参数=值

Email URL

mailto:user@example.com?subject=Hello

About URL Encoder/Decoder

Everything you need to know about URL encoding and decoding, and how to use our tool effectively for web development and SEO optimization

Understanding URL Encoding

URL encoding is the process of converting characters into a format that can be safely transmitted over the Internet. URLs can only contain a limited set of characters from the ASCII character set, so any characters outside this range must be encoded. This includes spaces, special characters, and non-ASCII characters like accented letters or symbols from other languages.

The most common encoding method is percent-encoding, where each unsafe character is replaced by a percent sign followed by two hexadecimal digits representing the character's ASCII code. For example, a space becomes %20, and an exclamation mark becomes %21. This ensures that URLs remain valid and can be transmitted safely across different systems and protocols.

Different Encoding Types

There are several different types of URL encoding, each serving a specific purpose. Standard URL encoding is used for most web addresses, while form URL encoding is specifically designed for HTML form submissions. Component encoding is used for individual parts of a URL, such as query parameters or path segments. URI encoding is a more general term that encompasses all types of uniform resource identifiers.

Each encoding type has its own rules and conventions. For example, form URL encoding uses plus signs (+) instead of %20 for spaces, and it also encodes certain characters that are safe in standard URL encoding. Understanding these differences is crucial for web developers who need to handle URLs in different contexts, from web addresses to API requests to database storage.

Security and Best Practices

Proper URL encoding is essential for web security and data integrity. Unencoded URLs can be vulnerable to injection attacks, where malicious code can be injected into URLs to compromise web applications. Encoding ensures that special characters are treated as literal text rather than executable code, preventing these types of attacks.

When working with URLs, it's important to validate and sanitize input to prevent security vulnerabilities. This includes checking for proper URL format, removing potentially dangerous characters, and using appropriate encoding methods for different contexts. Following best practices for URL encoding helps ensure that web applications remain secure and function correctly across different platforms and browsers.

SEO and URL Optimization

URL encoding plays a crucial role in search engine optimization (SEO). Search engines prefer clean, readable URLs that are properly encoded. While modern search engines can handle encoded URLs, clean URLs without excessive encoding tend to rank better and provide a better user experience.

When optimizing URLs for SEO, it's important to use hyphens instead of underscores, keep URLs short and descriptive, and avoid unnecessary parameters or session IDs. Proper URL encoding ensures that these optimized URLs remain valid and accessible while maintaining their SEO benefits. Our URL encoder/decoder tool helps you create and maintain SEO-friendly URLs that are both functional and optimized for search engines.

Secure Encoding

Encode URLs safely for web transmission with multiple encoding options

Accurate Decoding

Decode URLs back to their original format with precision

Multiple Formats

Support for URL, Form URL, Component, URI, and Base64 encoding

Real-time Processing

Instant encoding and decoding with visual feedback

Auto Copy

Automatically copy encoded/decoded results to clipboard for quick use

Encoding History

Keep track of recent encoding/decoding operations for easy reference