What is Base64 decoding?

Base64 decoding converts a Base64-encoded string back to its original text or binary data. Base64 encoding is commonly used in emails, data URLs, API responses, and configuration files to represent binary data as ASCII text.

How do I decode a Base64 string?

Simply paste your Base64-encoded string into the input area and click Decode. The decoded text will appear instantly in the output area. The tool automatically detects and handles UTF-8 encoded content.

Can I also encode text to Base64?

Yes! This tool works both ways. Paste plain text and click Encode to convert it to Base64, or paste Base64 and click Decode to convert it back to text. Use the Swap button to quickly switch between input and output.

Does Base64 decoding support binary data?

Yes, Base64 can represent any binary data. For text content, the decoded result is displayed as readable text. For binary content (images, files), the tool shows the decoded bytes.

What is Base64 used for?

Base64 is commonly used for: embedding images in HTML/CSS (data URLs), encoding email attachments (MIME), storing binary data in JSON APIs, encoding authentication tokens, and transmitting data through text-only channels.

Base64 Decoder

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Decode Base64-encoded strings back to readable text. Also supports encoding text to Base64. All processing happens in your browser — your data never leaves your device.