A lightweight and powerful tool for encoding and decoding Base64 strings. Perfect for web development, email encoding, data URIs, and API work. Supports file uploads, image preview, and batch processing.

Features:

• Encode text to Base64 format
• Decode Base64 strings back to original text
• File upload support for images, text files, and more
• Instant image preview for decoded Base64 images
• URL-safe Base64 encoding (RFC 4648)
• Batch processing for multiple strings
• Copy to clipboard functionality
• Download encoded/decoded output
• Save decoded files with original format
• Character count display

What is Base64?

Base64 is an encoding scheme that converts binary data into ASCII text format. It's commonly used for:

• Email attachments: Encoding binary files for email transmission
• Data URIs: Embedding images directly in HTML/CSS
• Web APIs: Transmitting binary data over text-based protocols
• Authentication: Basic auth headers and API tokens
• Storage: Storing binary data in text-based systems

URL-Safe Mode:

URL-safe Base64 encoding replaces + with - and / with _, and removes padding (=). This makes the encoded string safe for use in URLs, filenames, and HTTP headers.

Keyboard Shortcuts:

• Ctrl/Cmd + Enter - Process (Encode/Decode)
• Ctrl/Cmd + K - Clear all
• Ctrl/Cmd + M - Toggle mode