BASE64
Transform any text into Base64 encoding with our fast, browser-based tool. Base64 converts binary data into ASCII text format, making it perfect for embedding data in URLs, JSON files, and API requests. Your data stays private - all encoding happens locally in your browser without any server uploads.
Base64 is a binary-to-text encoding scheme that represents binary data in ASCII string format. It's commonly used for encoding data in emails, URLs, and web applications.
Common uses: Email attachments, data URLs, API authentication tokens, storing binary data in JSON/XML.
How Base64 Works: Base64 encoding takes binary data and converts it into 64 printable ASCII characters (A-Z, a-z, 0-9, +, /). Every 3 bytes of input data becomes 4 characters of Base64 output. This makes the encoded data about 33% larger, but ensures it can safely pass through systems that only handle text.
When to Use Base64: Use Base64 when you need to embed binary data in text formats like JSON or XML, send binary files via email protocols, include images directly in HTML or CSS using data URIs, or transmit binary data over channels that only support text. It's not encryption - Base64 encoded data can be easily decoded by anyone.
Privacy & Security: This tool runs entirely in your browser using JavaScript's built-in btoa() and atob() functions. Your data never leaves your device or gets sent to any server. All encoding and decoding
happens locally, ensuring complete privacy for sensitive information.