Base64 Encoder / Decoder

Encode text or files to Base64 and decode Base64 back to text

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About This Tool

The Base64 Encoder/Decoder converts text and files to Base64 format and back. Perfect for embedding images in HTML/CSS, encoding binary data, or preparing data for transmission. All processing happens locally in your browser — your files never leave your device.

How to Use

  1. Enter text into the Input field or choose a file to encode.
  2. Press Encode to Base64 to convert to Base64, or Decode from Base64 to reverse it.
  3. Review the Base64 string or image preview in the Output panel.
  4. Click Copy to save the Base64 string or decoded text to your clipboard.

Why Choose OmniTools?

⚡ Instant Results

Zero server lag. All calculations run locally on your device for maximum speed.

🛡️ 100% Private

Your data never leaves your device. No uploads, no servers, no tracking.

Frequently Asked Questions

Can I encode binary files?

Yes. You can upload images and other files to encode them to Base64.

Can I decode Base64 back to text?

Yes. Paste a Base64 string and click Decode to recover the original content.

Is the output URL-safe Base64?

No. This tool uses standard Base64 encoding.

Is there a file size limit?

The limit depends on your browser's available memory. Very large files may not process.

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All tools run locally in your browser. No data is sent to any server.

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