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Base64 Encoder / Decoder

Encode and decode Base64 strings instantly. Useful for data URLs, API tokens and email attachments.

100% Private Browser-Based Free Forever

const tool = {
  name: 'Base64 Encoder / Decoder',
  type: 'browser-based',
  cost: free,
  privacy: true,
}

Input

Output

How to Use Base64 Encoder / Decoder

Paste plain text or a Base64 string

Click Encode or Decode

Copy the output

Why Use This Tool

100% Private

Your data never leaves your browser. Nothing is uploaded to any server.

Instant Results

Modern browser APIs deliver results in milliseconds with no waiting.

Free Forever

No subscriptions, no credits, no paywalls — ever.

Frequently Asked Questions

What is Base64 used for?

Encoding binary data (images, files) as text for safe transmission via APIs, emails and data URLs.

Does it support Unicode?

Yes — UTF-8 encoded Unicode text is fully supported.

Is it purely client-side?

100% — nothing leaves your browser.

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