Base64 Encoder / Decoder
Convert text to Base64 and back instantly. Ideal for securely transmitting data in URLs and forms.
Key Features
Secure Encoding
All processing happens locally in your browser
Instant Conversion
Real-time encoding and decoding with no delays
UTF-8 Support
Full Unicode character support for international text
Related Coding Tools
Frequently Asked Questions
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format by translating it into a radix-64 representation. It's commonly used to encode data that needs to be stored and transferred over media designed to deal with text.
Why use Base64 encoding?
Base64 encoding is used to encode binary data for safe transmission over text-based protocols like HTTP, email, and XML. It ensures that data remains intact without modification during transport.
Is Base64 encoding secure?
Base64 is not encryption and provides no security. It's simply an encoding method that makes binary data safe to transmit over text-based systems. For security, you should use proper encryption methods.
What characters are used in Base64?
Base64 uses 64 different ASCII characters: A-Z, a-z, 0-9, +, and /. The = character is used for padding at the end of the encoded string.
Can Base64 increase file size?
Yes, Base64 encoding increases the size of the data by approximately 33%. This is because every 3 bytes of binary data become 4 ASCII characters in Base64 encoding.
Is my data secure with this tool?
Absolutely! All encoding and decoding happens directly in your browser. Your data never leaves your computer, ensuring complete privacy and security.
What are common uses of Base64?
Common uses include embedding images in HTML/CSS, encoding email attachments, storing complex data in URLs, and encoding binary data in XML/JSON documents.
Is this tool completely free?
Yes, our Base64 encoder/decoder is completely free to use with no limitations or hidden costs.