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URL Encoding: Everything You Need to Know
Developer
5 min read

URL Encoding: Everything You Need to Know

Master URL encoding and decoding to create safe, valid URLs for your web applications.

SimpleWebToolsBox Team
January 8, 2026

Understanding URL Encoding

Understanding URL Encoding

URL encoding, also known as percent encoding, converts special characters and spaces in URLs into a format that can be safely transmitted over the internet. This is essential because URLs can only contain a limited set of characters, and special characters have specific meanings in URLs.

Why URL Encoding is Necessary

Why URL Encoding is Necessary

URLs can only contain ASCII characters. Special characters like spaces, ampersands, and non-ASCII characters must be encoded. For example, a space becomes %20, and an ampersand becomes %26. This prevents URLs from breaking and ensures proper parsing by web servers and browsers.

Common Encoded Characters

Some common URL encodings include: space (%20), ampersand (%26), plus sign (%2B), equals sign (%3D), question mark (%3F), and hash (%23). Understanding these encodings helps you create valid URLs and debug URL-related issues in your applications.

Best Practices

Best Practices

Always encode user input before including it in URLs. Use proper encoding functions provided by your programming language rather than manually encoding. Be aware that some characters like letters, numbers, and certain symbols don't need encoding. Our URL Encoder/Decoder tool helps you encode and decode URLs quickly and accurately.

Conclusion

We hope this guide has been helpful! For more tutorials and tips, explore our other blog posts. Don't forget to check out our free online tools to put this knowledge into practice.

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