Base64 Encoder/Decoder - Encode & Decode Base64 Online
Encode and decode text to/from Base64 format. Free online Base64 encoder and decoder tool with UTF-8 support.
How This Tool Works
This tool converts text to Base64 encoding and decodes Base64 strings back to plain text. Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used for encoding data in emails, URLs, and data URIs. The tool supports UTF-8 characters and processes everything in your browser for privacy.
Why Use This Tool
- ✓Encode text to Base64 format
- ✓Decode Base64 strings to plain text
- ✓Supports UTF-8 and special characters
- ✓Perfect for data URIs and API testing
- ✓Completely client-side processing
- ✓Copy results with one click
Frequently Asked Questions
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that converts binary data into a text format using 64 different ASCII characters. It's commonly used to encode data that needs to be stored or transferred over media designed to handle text.
When should I use Base64 encoding?
Base64 is useful for encoding binary data in text-based formats like JSON or XML, creating data URIs for images, encoding credentials in HTTP headers, and ensuring data integrity during transmission over text-based protocols.
Is Base64 encryption?
No! Base64 is an encoding method, not encryption. It's easily reversible and provides no security. Never use Base64 to protect sensitive information. Use proper encryption methods for security.
Does Base64 increase data size?
Yes, Base64 encoding increases the data size by approximately 33%. This is because it uses 6 bits per character instead of 8 bits, requiring more characters to represent the same data.
Can I encode images to Base64?
While this tool is designed for text, you can encode small images to Base64 using other tools or programming languages. Base64-encoded images are often used in data URIs for embedding images directly in HTML or CSS.