Why percent-encode a URL?

Certain characters such as spaces and '&' have special meaning in URLs. Percent-encoding makes them safe to transmit without breaking the URL structure.

What is the difference between component and full URL modes?

Component mode encodes every reserved character (like encodeURIComponent), while full URL mode preserves URL structure such as '://', '?', '#', and '&', encoding only spaces and truly unsafe characters.

How are spaces encoded?

Spaces are encoded as %20 (not '+'). The + encoding is specific to application/x-www-form-urlencoded in HTML forms; %20 is the correct general-purpose encoding for URL paths and query parameters.

Which characters are left unencoded?

Unreserved characters A-Z, a-z, 0-9, '-', '.', '_', and '~' are never encoded. In full URL mode, reserved characters like ':', '/', '?', '&', '=' are also preserved.

How are multibyte characters handled?

Characters are encoded to bytes using the selected charset (UTF-8 by default), then each byte is percent-encoded. '你好' becomes %E4%BD%A0%E5%A5%BD in UTF-8.

Is my data uploaded anywhere?

No. All encoding happens locally in your browser with no server round-trip.

URL-Kodierer

Percent-encode text for safe use in URLs. Kostenlos, privat und 100% clientseitig.

ModusZeichensatz

Eingabe

Beispiel ausprobieren:

Ausgabe

Local only

Letzte Verlauf

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Verwendung

Paste the text or URL into the input box.
Choose component or full URL mode.
Copy the percent-encoded result.

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Häufige Fragen

Why percent-encode a URL?: Certain characters such as spaces and '&' have special meaning in URLs. Percent-encoding makes them safe to transmit without breaking the URL structure.
What is the difference between component and full URL modes?: Component mode encodes every reserved character (like encodeURIComponent), while full URL mode preserves URL structure such as '://', '?', '#', and '&', encoding only spaces and truly unsafe characters.
How are spaces encoded?: Spaces are encoded as %20 (not '+'). The + encoding is specific to application/x-www-form-urlencoded in HTML forms; %20 is the correct general-purpose encoding for URL paths and query parameters.
Which characters are left unencoded?: Unreserved characters A-Z, a-z, 0-9, '-', '.', '_', and '~' are never encoded. In full URL mode, reserved characters like ':', '/', '?', '&', '=' are also preserved.
How are multibyte characters handled?: Characters are encoded to bytes using the selected charset (UTF-8 by default), then each byte is percent-encoded. '你好' becomes %E4%BD%A0%E5%A5%BD in UTF-8.
Werden meine Daten irgendwo hochgeladen?: Nein. Die gesamte Codierung erfolgt lokal in Ihrem Browser, ohne Server-Roundtrip.

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