Base64 Encoder/Decoder

Encode text and files to Base64 or decode Base64 strings back to original content. Perfect for data encoding, API development, and file handling.

Upload any file to encode to Base64
Decoded image
Tips for best results
  • Base64 encoding increases file size by approximately 33%.
  • Use Base64 for embedding small images or data in JSON/XML.
  • Large files may cause browser performance issues.

What is Base64 Encoding?

Base64 is an encoding scheme that converts binary data into ASCII text format. It's commonly used for encoding data in emails, embedding images in HTML/CSS, storing binary data in JSON, and API data transmission. Base64 encoding ensures data integrity when transferring binary data through text-only protocols.

Key Features

  • Text Encoding: Encode any text string to Base64 format
  • File Encoding: Upload and encode files of any type to Base64
  • Decode Support: Decode Base64 strings back to original content
  • Image Preview: Automatically detect and preview decoded images
  • Privacy First: All processing happens in your browser—data never leaves your device

Use Cases

  • API Development: Encode data for API requests and responses
  • Web Development: Embed images and assets in HTML/CSS
  • Data Storage: Store binary data in JSON or XML formats
  • Email: Encode attachments for email transmission
  • Security: Encode sensitive data for transmission

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