How to Decode a URL Safely

Decode the right URL component

Percent encoding represents characters as byte sequences such as %20 for a space. The URL Decoder restores valid UTF-8 sequences so an address, query value, or path segment is easier to inspect.

Handle plus signs deliberately

In an ordinary URL, a plus sign can be a literal plus. In form-encoded query data, it commonly represents a space. Enable plus-as-space only when the source uses that form convention; otherwise leave the character unchanged.

Do not blindly reuse fully decoded text

Characters such as ?, &, #, and / have structural meaning in a URL. A decoded value is useful for reading, but inserting it back into a different URL without encoding the correct component can change its interpretation.

Reject malformed sequences

An incomplete percent sign or invalid UTF-8 byte sequence should produce an error rather than a partial result. Correct the source, decode again, and compare the readable value with what you expected. Use Text Compare when two long versions need a precise review.