TinyToolHub
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 to text
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 pages, and APIs where binary data needs to be transmitted over text-based protocols.
Base64 encoding increases the size of data by approximately 33%.
Our Base64 Encoder/Decoder is a free online tool that allows you to encode text to Base64 format or decode Base64 back to readable text. Base64 encoding is essential for web development, API integration, and data transmission where binary data needs to be represented as text.
This tool works entirely in your browser - no data is sent to our servers, ensuring your information remains private and secure. Perfect for developers, system administrators, and anyone working with encoded data.
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that converts binary data into ASCII characters. It uses 64 different characters (A-Z, a-z, 0-9, +, /) to represent data, making it safe for transmission over text-based protocols.
When should I use Base64 encoding?
Base64 is commonly used for encoding images in CSS/HTML, API authentication tokens, email attachments, and any binary data that needs to be transmitted over text-based protocols like HTTP or SMTP.
Is Base64 encoding secure?
No, Base64 is not encryption - it's just encoding. Anyone can decode Base64 text back to its original form. Never use Base64 alone for sensitive data; use proper encryption instead.
Why does Base64 increase file size?
Base64 encoding increases the size of data by approximately 33% because it represents 3 bytes of binary data using 4 ASCII characters. This overhead is the trade-off for text-safe representation.
Can I encode special characters and Unicode?
Yes, our tool properly handles Unicode characters and special symbols by using UTF-8 encoding before Base64 conversion, ensuring all characters are preserved correctly.
Is my data safe when using this tool?
All encoding and decoding happens locally in your browser. No data is transmitted to our servers, ensuring complete privacy and security of your information.