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Base64 Encoder/Decoder

Base64-Strings online kodieren und dekodieren. Kostenloser Konverter für Text, Daten und Binärdaten. Sofortige Ergebnisse im Browser — keine Installationen, keine Uploads.

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Häufig Gestellte Fragen

What is Base64 encoding?

Base64 converts binary data into ASCII text using 64 printable characters. It's used for embedding images in HTML/CSS, sending binary data in JSON/XML, email attachments (MIME), and data URLs.

Does Base64 increase file size?

Yes — Base64 encoding increases size by approximately 33%. A 100KB file becomes ~133KB when Base64 encoded. This is the tradeoff for text-safe transport.

Anleitung

1

Enter Text

Type or paste the text you want to encode into Base64.

2

Encode

Click Convert to generate the Base64-encoded output.

3

Copy

Copy the result to use in your code, API, or data URL.