What is Base64 Encoder/Decoder?

Base64 Encoder/Decoder converts text to Base64 encoding and back instantly. Base64 is commonly used to embed images in HTML/CSS, encode email attachments, transmit binary data as text, and handle API authentication tokens — all processed privately on your device.

How to use

1. Paste or type your plain text in the input area to encode it to Base64, or paste a Base64 string to decode it.
2. Toggle between Encode and Decode mode using the direction switch.
3. Copy the result with one click — ready to paste into code, emails, or configuration files.

Result

Encode 'Hello, World!' → 'SGVsbG8sIFdvcmxkIQ==' for embedding in a JSON payload. Decode 'dXNlcjpwYXNz' → 'user:pass' to inspect a Basic Auth header.

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