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Developer Tools • Encode & Decode

Base64 Decoder

Convert normal text to Base64 format or decode Base64 strings back to text instantly. Supports UTF-8 characters and emojis.

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UTF-8 Support

Correctly encodes and decodes text containing emojis and special characters.

Instant Speed

Conversion happens in milliseconds directly in your browser.

Secure

Data never leaves your device. Everything is processed locally.

What is Base64?

Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation. It is commonly used to encode data that needs to be stored and transferred over media that are designed to deal with textual data.

Our Base64 Decoder helps you:

  • Decode: Convert Base64 encoded strings back into readable text.
  • Encode: Convert text, HTML, or JSON into a Base64 string for safe transmission.
  • Debug: Verify the contents of Base64 tokens or API headers.

Frequently Asked Questions

How does Base64 encoding work?

Base64 divides binary data into 6-bit chunks and maps each chunk to a character from a 64-character set (A-Z, a-z, 0-9, +, /).

Does this tool support images?

This specific tool is designed for text. However, Base64 is often used to encode images for embedding in HTML/CSS.

Is my data sent to a server?

No, all encoding and decoding happens locally in your browser using JavaScript.