Base64 Encoder/Decoder – Online Free & Instant Tool (2026)

Generate and decode Base64 instantly with this free online Base64 Encoder / Decoder. Fast, secure, and easy to use tool for developers, cybersecurity learners, and web professionals.

Base64 Encoder / Decoder

Encode or decode Base64 instantly with auto-detection, file support, and real-time conversion.

📂 Drag & Drop file here or browse

Mode: Auto 0 chars

What is Base64 Encoding?

Base64 encoding is a method used to convert binary data into a text format using a set of 64 characters. It is commonly used to safely transmit data over systems that only support text, such as URLs, HTML, and email.

How to Use This Base64 Encoder/Decoder

  • Enter your text or data into the input box
  • Select encode or decode
  • Instantly get the result
  • Copy or download the output

Why Use Base64 Encoding?

  • Ensure safe data transmission
  • Embed images or files in HTML or CSS
  • Work with APIs and tokens
  • Avoid data corruption in text-based systems

Base64 Example

Original text:

Hello World

Encoded:

SGVsbG8gV29ybGQ=

Common Use Cases

  • Email attachments (MIME)
  • Data URLs in web development
  • API authentication
  • Storing binary data as text

Is Base64 secure?

No. Base64 is not encryption. It only encodes data, meaning it can be easily decoded. It should not be used to protect sensitive information.

More related tools:

Try more free tools:

FAQ

Is this tool free?
Yes, this tool is completely free to use.

Is my data secure?
Yes, everything runs in your browser and no data is stored.

Can I use this for development?
Yes, this tool is designed for developers and professionals.