Base64 Encoder/Decoder Online - Free Tool

Our free Base64 encoder/decoder is the fastest way to convert text and images to Base64 format online. Whether you're encoding data for APIs, embedding images in HTML, or decoding Base64 strings, this tool provides instant results without any signup or installation required.

What is Base64 Encoding?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used to encode data that needs to be stored or transferred over media designed to handle text, such as email, URLs, and JSON.

Key Features

• Text Encoding: Convert plain text to Base64 format instantly
• Image Encoding: Upload images and convert to Base64 data URIs
• URL-Safe Encoding: Support for URL-safe Base64 format
• Decoding: Decode Base64 strings back to text or images
• Image Preview: Preview decoded images directly in the browser
• Privacy First: All processing happens locally in your browser

Common Use Cases

• Encode images for embedding in HTML, CSS, or JSON
• Convert binary data for transmission over text-based protocols
• Encode data for URLs and query parameters
• Decode Base64 strings from API responses
• Create data URIs for inline images
• Encode credentials for Basic Authentication headers