Base64 Encoder & Decoder
Convert plain text, UTF-8 strings, and binary images to and from Base64 format instantly.
0 characters | 0 bytes
0 characters | 0 bytes
What is Base64 Encoding and How Does It Work?
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format using a radix of 64. It is widely used across web protocols, REST APIs, JSON payloads, and HTML/CSS data URIs to transmit images and encrypted tokens safely without data corruption.
Why Use Base64 Encoding?
- Safe Data Transfer: Prevents email gateways and HTTP proxies from modifying special binary characters.
- Inline Data URIs: Embed small icons and background textures directly inside CSS files to eliminate extra HTTP requests.
- 100% Client-Side Privacy: All string encoding and image conversions process strictly in your browser memory without server uploads.
Frequently Asked Questions
Q: Does Base64 encoding encrypt my data?
No. Base64 is an encoding format, not an encryption method. Anyone can decode a Base64 string back into its original text or image without a secret key.
No. Base64 is an encoding format, not an encryption method. Anyone can decode a Base64 string back into its original text or image without a secret key.
Q: How much does Base64 increase file size?
Base64 encoding increases data payload size by approximately 33% because every 3 binary bytes are converted into 4 ASCII characters.
Base64 encoding increases data payload size by approximately 33% because every 3 binary bytes are converted into 4 ASCII characters.