URL Encode / Decode

Percent-encode special characters in URLs and decode encoded URL strings. Supports both encodeURIComponent and encodeURI modes.

Original String
Encoded Output

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Frequently Asked Questions

What is URL encoding?

URL encoding (also called percent-encoding) replaces special characters with a % followed by two hexadecimal digits. For example, a space becomes %20. This ensures URLs are valid and unambiguous.

When should I use encodeURIComponent vs encodeURI?

Use encodeURIComponent (the default) for encoding individual query parameters or path segments. Use encodeURI for encoding a complete URL — it preserves characters like /, ?, and # that have special meaning in URLs.

What characters need to be encoded?

Characters that must be encoded include spaces, !, @, #, $, &, +, ,, /, :, ;, =, ?, @, [, ], and non-ASCII characters like emoji and accented letters.

About URL Encode / Decode

Percent-encode special characters in URLs and decode encoded URL strings. Supports both encodeURIComponent and encodeURI modes.

urlencodedecodepercenturi