URL Encoder & Decoder - Encode and Decode URLs Online

What is URL Encoding?

URL encoding (also called percent-encoding) converts special characters into a format that can be safely transmitted in URLs. Characters like spaces, &, =, and non-ASCII characters are replaced with % followed by their hexadecimal value.

When to Use URL Encoding

• Query string parameters with special characters
• Non-ASCII characters in URLs (international characters)
• Reserved characters used as data (not delimiters)
• Form data submission (application/x-www-form-urlencoded)

encodeURI vs encodeURIComponent

encodeURI encodes a full URL but preserves characters like :, /, ?, #, &. encodeURIComponent encodes everything except A-Z, a-z, 0-9, and - _ . ~, making it suitable for encoding individual URL components.