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How to use Base64 Decoder

Paste a Base64 string, and the tool decodes it back to plain text or binary live.

Frequently asked questions

Why does Base64 use = padding?

Padding aligns output to multiples of 4 characters. Some implementations omit it — the decoder handles both.

What if my Base64 has line breaks?

This decoder strips line breaks before decoding — common in MIME-encoded email content.

Can I decode Base64 images?

Paste the Base64 data (after the data:image/png;base64, prefix) to see the raw data.

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