Encode text or files to Base64 format and decode Base64 strings back to readable text. Supports UTF-8 characters and file upload. Essential for web developers.
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It is commonly used when there is a need to encode binary data that needs to be stored and transferred over media designed to deal with textual data. Base64 is widely used in web development for embedding images in HTML/CSS (data URIs), sending binary data in JSON APIs, encoding authentication credentials (Basic Auth), and storing complex data in cookies or local storage.
The encoding process converts every 3 bytes of binary data into 4 ASCII characters, using a set of 64 characters (A-Z, a-z, 0-9, +, /) plus the = padding character. While Base64 increases data size by approximately 33%, it ensures data integrity across systems that may not handle raw binary data correctly. Our encoder supports UTF-8 text and file uploads, and our decoder can convert any valid Base64 string back to its original form.
Web developers use Base64 to embed small images directly in CSS or HTML (data:image/png;base64,...). API developers encode binary payloads in JSON. Email systems use Base64 for attachments (MIME). Security professionals use it for encoding tokens and keys. Data analysts encode files for transmission through text-only channels. Our tool handles all these scenarios with instant encode/decode and one-click copying.
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