Base64 Decoder — Free Online Tool

Decode Base64 strings back to plain text or binary. Base64 Decoder is a free online tool from the ToolsRift Encoders & Decoders collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.

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How to use Base64 Decoder

  1. Open the Base64 Decoder above — it loads instantly, no account needed.
  2. Enter or upload your input. Everything is processed locally on your device.
  3. Get your result immediately and copy or download it with one click.

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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