🔐 Base64 Encoder & Decoder

Convert text and images to Base64 format or decode

📝 Text Input

🖼️ Image to Base64

PNG, JPG, GIF, WebP supported

💡 What is Base64?

Base64 is an encoding method that converts binary data to ASCII characters. It is used to carry binary data in emails, URLs and data URIs.

✨ Features

  • ✓Text encode/decode
  • ✓Image to Base64
  • ✓Data URL creation
  • ✓UTF-8 support
  • ✓Quick copy

🎯 Use Cases

  • • Email attachments
  • • Data URIs (CSS, HTML)
  • • API authentication
  • • JSON Web Tokens (JWT)
  • • Binary data transfer

Base64 Encoder & Decoder - Online Base64 Converter

Convert text and images to Base64 format or decode Base64 strings with CK Studio's free Base64 encoder/decoder tool. Fast, secure and easy to use.

What is Base64 Encoding?

Base64 is an encoding method that converts binary data to ASCII text format. 8-bit binary data is divided into 6-bit characters and represented with 64 different ASCII characters. This method allows binary data to be safely transported in text-only systems.

Why is Base64 Used?

  • Email Attachments: Binary files are safely transported in email
  • Data URIs: Images can be embedded in CSS and HTML
  • API Authentication: Username and password are encoded with Base64
  • JSON Web Tokens: Payload in JWTs is encoded with Base64
  • URL Parameters: Binary data is safely transported in URLs

Base64 Advantages and Disadvantages

✅ Advantages

  • • Works in text-only systems
  • • Platform independent
  • • Easy to implement
  • • Preserves data integrity

❌ Disadvantages

  • • 33% size increase
  • • CPU overhead
  • • Not encryption
  • • Can be easily decoded

Frequently Asked Questions

Is Base64 secure?

Base64 is an encoding method, not encryption. Anyone can easily decode it. Real encryption methods like AES or RSA should be used for security.

Why does Base64 increase size?

Base64 converts 8-bit (256 possibilities) binary data to 6-bit (64 possibilities) characters. This conversion causes a 33% size increase. For example, 3 bytes of data becomes 4 Base64 characters.

What is Data URI?

Data URI is a method of embedding files in URLs. Format: data:[mediatype][;base64],data. Example: data:image/png;base64,iVBORw0KG... Reduces HTTP requests for small images.