Base64 Encoding Explained: When and Why to Use It
Base64 is everywhere in web development — email attachments, JWT tokens, data URLs. Here's what it does and when you need it.
By EpicToolify Editorial
Base64 is an encoding scheme that converts binary data into ASCII text. It represents binary data using 64 printable characters (A–Z, a–z, 0–9, +, /) making it safe to transmit over text-based protocols that might otherwise corrupt binary content.
Common use cases: encoding image data as data: URIs in HTML and CSS, encoding binary payloads in email (MIME), JWT tokens (which use URL-safe Base64), and encoding credentials in HTTP Basic Authentication.
Important: Base64 is encoding, not encryption. It adds no security. Anyone can decode a Base64 string in seconds. Never use it to 'hide' sensitive information.