Base64 Encoding and Decoding Tool
Base64 is an encoding scheme that converts binary data into ASCII text. It is widely used in web development for embedding images in HTML/CSS, encoding API authentication credentials, and transmitting data through text-based protocols.
Common Uses
Web developers use Base64 to embed small images directly in CSS or HTML, eliminating extra HTTP requests. API developers use it for Basic Authentication headers. Email systems use Base64 to encode attachments. Data URIs in web applications frequently use Base64 encoding.
Frequently Asked Questions
Is Base64 encryption? ▼
No, Base64 is encoding, not encryption. It does not provide any security — anyone can decode Base64 text. For security, use proper encryption algorithms.
Why does Base64 make data larger? ▼
Base64 encoding increases data size by approximately 33% because it represents 3 bytes of data using 4 ASCII characters.