URL Encode Online

URL encoding (also called percent encoding) replaces unsafe characters in a URL with a percent sign followed by two hexadecimal digits. For example, a space becomes %20, an ampersand becomes %26, and a question mark becomes %3F. This ensures URLs are valid and can be safely transmitted across the internet.

encodeURI encodes a complete URL but preserves characters that have special meaning in URLs like :, /, ?, #, and &. encodeURIComponent encodes everything including those special characters, making it ideal for encoding individual query parameter values. This tool uses encodeURIComponent by default for complete encoding.

Both are valid but used in different contexts. %20 is the standard URL encoding for spaces and works everywhere. The + sign is used specifically in HTML form data (application/x-www-form-urlencoded). For general URL encoding, %20 is recommended. This tool lets you choose between both options.