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Base64 Decoder Online Free

Decode Base64 strings back to text or files online for free. Instant decoding in your browser, no data sent to any server.

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🔒 No upload · 100% local processing · No account required

Base64 Decoder Online

Decode Base64 encoded strings back to original text or binary content instantly. Useful for debugging API responses, reading encoded data, and extracting embedded files.

How to decode Base64

  1. Paste the Base64 encoded string.
  2. The tool validates and decodes the content.
  3. Click Decode to generate the output.
  4. Copy or download the decoded result.

Frequently asked questions

What can I decode?
Any valid Base64 string including text, images, and binary files.
What if Base64 is invalid?
The tool indicates when input is not valid Base64.
Can I decode Base64 images?
Yes. Paste a Base64 data URL and extract the original image.
Is decoding safe?
Yes. All decoding is local in your browser.