URL Encoder & Decoder

How it works

Encoding uses encodeURIComponent for full RFC 3986 component encoding. Decoding uses decodeURIComponent and replaces "+" with space first to handle form-encoded inputs.

Frequently asked

When should I URL-encode?

Any time you put user input into a query string, form body, or URL path. Spaces, &, =, ?, and unicode characters all need encoding.

Why does my space become %20 sometimes and + other times?

In URL paths, spaces become %20. In query strings encoded as form data, spaces traditionally become +. Both decode to a space.

Can I encode the whole URL?

Use encode-component on individual parts (path segments, query values), not the whole URL — encoding the colon after http: would break the URL.