Base64 Encoder & Decoder

Encode and decode Base64 strings and images securely offline.

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What is Base64 Encoder & Decoder and How Does It Work?

Encode and decode text or files to and from Base64 format instantly.

Here are some of the primary reasons developers use this tool:

  • Embed images directly into CSS or HTML.

  • Encode basic authentication headers.

  • Safely transmit binary data over text-based protocols.

Step-by-Step Guide: How to Use Base64 Encoder

  1. Paste your text or upload a file.

  2. Select either Encode or Decode mode.

  3. The result will appear instantly.

  4. Copy or download the output.

Key Features & Privacy Guarantees

  • Supports UTF-8 string encoding

  • File to Base64 data URI support

  • High-performance client-side processing

Frequently Asked Questions

Yes, you can upload an image file and the tool will generate a valid Base64 data URI that you can use in HTML `<img>` tags or CSS.