Base64 Encoder / Decoder
Instantly encode your data into a Base64 string or decode a Base64 string back to its original format. Our free online tool is perfect for developers working with web applications, APIs, and data transmission.
What is Base64?
Base64 is a binary-to-text encoding and decoding scheme. Encoding translates binary data into a safe ASCII string format, making it possible to transmit data through channels that only reliably support text. Decoding is the reverse process, converting the Base64 string back into its original binary data.
Common Uses for Base64
Base64 is a fundamental tool for web developers and system administrators for various tasks:
- Embedding Images in HTML/CSS: Small images or icons can be directly embedded into a webpage using a Base64 data URI, reducing the number of HTTP requests.
- Transmitting Data in APIs: When sending binary data (like images or files) within a JSON payload, it must first be encoded into a Base64 string.
- Basic Authentication: The HTTP Basic Authentication scheme sends usernames and passwords in the request header, encoded in Base64.
- Email Attachments: Base64 is used to encode binary file attachments in the MIME (Multipurpose Internet Mail Extensions) standard for email.
Why Use Our Base64 Converter?
Our tool provides a simple, two-way interface for both encoding and decoding. All operations are performed client-side, meaning your data is never sent to our servers. It correctly handles UTF-8 characters, ensuring accurate conversions for a wide range of text inputs.