Realm by Rook|Utilities
    URL Encoder/Decoder

    URL Encoder/Decoder

    Encode and decode URLs with percent encoding

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    About the URL Encoder / Decoder

    URL encoding (also called percent-encoding) replaces unsafe or reserved characters with %HH sequences so a URL can travel through HTTP intact. Different contexts need different levels of encoding: query parameters need aggressive escaping, while a full URL needs structural characters preserved. This tool exposes both variants and handles Unicode correctly so you don't have to reason about UTF-8 byte order manually.

    Features

    How it works

    1. Paste the text or URL you want to encode or decode.
    2. Pick Encode or Decode mode.
    3. Choose Component (for a single param) or Full URL (for the whole address).
    4. Copy the result.

    Use cases

    Frequently asked questions

    When should I use Component vs Full URL mode?

    +

    Use Component mode for a single query parameter value — it escapes slashes, colons, and question marks. Use Full URL mode when encoding an entire URL, so structural characters like :// and / stay intact.

    Why does my URL fail to decode?

    +

    A malformed percent sequence like %ZZ (non-hex digits) is invalid UTF-8 and throws. Double-check that every % is followed by exactly two hex digits.

    Is this the same as URL encoding?

    +

    Yes. RFC 3986 calls it percent-encoding; most tooling calls it URL encoding. They're the same thing.

    Does it handle emoji?

    +

    Yes — Unicode characters are UTF-8 encoded first, then percent-encoded per the spec.

    Why are spaces encoded as %20 and not +?

    +

    %20 is correct per RFC 3986. The + shorthand is only valid for application/x-www-form-urlencoded bodies, not URLs.