Developer Tool
Base64 Encoder/Decoder
Encode and decode Base64 strings quickly and securely
Configuration
Replace +/= with -_
76 chars per line
Input to Encode
Base64 Output
Base64 Information
What is Base64?
Base64 is a binary-to-text encoding scheme that represents binary data in ASCII format. It's commonly used for encoding data in email, web applications, and data URLs.
- • Uses 64 characters: A-Z, a-z, 0-9, +, /
- • Padding with = characters
- • Increases data size by ~33%
Use Cases
- • Email attachments (MIME)
- • Data URLs for images in CSS/HTML
- • API authentication tokens
- • Storing binary data in JSON/XML
- • URL-safe encoding for web applications
Changelog
v2.0.0Latest
Advanced Base64 Processing
- • File upload and encoding support
- • URL-safe Base64 encoding option
- • Line break formatting (76 chars per line)
- • Download functionality for results
- • File size and expansion ratio display
- • Enhanced error handling and validation
v1.0.0
Initial Release
- • Basic text encoding and decoding
- • Encode/decode mode switching
- • Input/output swapping
- • Copy to clipboard functionality
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Quick Tips
- All processing happens in your browser
- Your data never leaves your device
- No registration or login required
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