URL Encoder / Decoder

What is URL Encoding?

URL encoding (also called percent encoding) converts characters into a format that can be transmitted over the internet. URLs can only contain ASCII characters, so special characters must be encoded.

Common Encoded Characters

• Space → %20 or +
• / → %2F
• ? → %3F
• & → %26
• = → %3D
• # → %23
• % → %25

When to Use URL Encoding

• Passing data in query strings
• Encoding special characters in URLs
• Preparing URLs for API calls
• Handling Unicode characters in URLs

encodeURI vs encodeURIComponent

encodeURI() encodes special characters but preserves URL structure characters like /, ?, &, =.

encodeURIComponent() encodes everything, including URL structure characters. Use this when encoding a URL parameter value.