URL encode

Percent-encode text for query strings and path segments in your browser. Nothing is uploaded.

Paste, then Encode.

How to use the URL encode

Paste the raw value.
Click Encode.
Copy the percent-encoded string into a query parameter or path segment.

encodeURIComponent

Spaces become %20, not +. Reserved query characters such as & and = are encoded so they stay inside one parameter. That is what you want for a value you then append after utm_campaign=. The UTM builder already encodes fields when it builds a URL.

Nothing is uploaded

Encoding is local. 1.5 MB.

URL encode FAQ

Why not + for space?

application/x-www-form-urlencoded uses +. This page matches encodeURIComponent (%20).

Whole URL?

Do not encode https://. Encode only the unsafe value, or use the UTM builder for a landing URL.

Decode?

Use URL decode.