Base64 Encoder / Decoder
Encode text to Base64 format or decode from it.
How to Use Base64 Encoder / Decoder
- Enter or paste the text you want to encode in the input field.
- Click 'Encode' to convert your text to Base64 format, or paste a Base64 string and click 'Decode' to convert it back to readable text.
- Copy the result with the copy button. The tool handles UTF-8 text correctly.
About Base64 Encoder / Decoder
The Base64 Encoder/Decoder converts text to and from Base64 encoding instantly. Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format, widely used in web development, email protocols (MIME), data URLs, and API authentication. Developers use Base64 to embed images in CSS/HTML (data URIs), encode API credentials for HTTP Basic Authentication, transmit binary data through text-only channels, and encode/decode JWT token payloads. Our tool handles UTF-8 text correctly, ensuring that international characters, emojis, and special symbols are properly encoded and decoded. All processing happens client-side for security.
Frequently Asked Questions
What is Base64 encoding used for?
Base64 is used to safely transmit binary data through text-based protocols. Common uses include embedding images in HTML/CSS, encoding email attachments (MIME), HTTP Basic Authentication headers, encoding JWT payloads, and storing binary data in JSON or XML.
Does Base64 encoding make data secure?
No! Base64 is NOT encryption. It's a reversible encoding scheme that anyone can decode. Never use Base64 to protect sensitive information. Use proper encryption (AES, RSA) for security.
Why does Base64 increase file size?
Base64 encoding increases data size by approximately 33% because it represents every 3 bytes of binary data as 4 ASCII characters. This trade-off is accepted for the convenience of text-safe transmission.