Free Online Base64 Encoder & Decoder

What is Base64 Encoding?

Base64 is a group of binary-to-text encoding schemes that represent binary data (more specifically, a sequence of 8-bit bytes) in an ASCII string format by translating it into a radix-64 representation. Each Base64 digit represents exactly 6 bits of data. It's commonly used when there's a need to encode binary data that needs to be stored and transferred over media designed to deal with textual data, such as emails, XML, or JSON.

Why Use Our Base64 Encoder & Decoder?

• Data Transmission: Safely transmit data that might otherwise be corrupted or misinterpreted when sent over text-based protocols.
• Data Obscurity (Not Encryption): Base64 can make data less human-readable at a glance, but it's easily reversible and should NOT be used for security or encryption.
• Embedding Binary Data: Useful for embedding binary data (like images or other files) directly into text-based formats like HTML, CSS, or JSON (e.g., Data URLs).
• Simple & Fast: Quickly encode or decode your strings directly in your browser.
• Client-Side Operation: All processing is done locally on your computer, ensuring your data remains private and is not sent to any server.
• Copy & Download: Easily copy the processed string or download it as a text file.

How to Use the Base64 Encoder & Decoder

• Input Data: Type or paste the text you want to encode, or the Base64 string you want to decode, into the "Input Text / Base64 String" textarea.
• Encode: Click the "Encode to Base64" button to convert your plain text input into a Base64 encoded string.
• Decode: Click the "Decode from Base64" button to convert your Base64 input string back into its original plain text (UTF-8) form.
• View Output: The result of the operation will appear in the "Output" textarea.
• Handle Errors: If you attempt to decode an invalid Base64 string, an error message will be displayed.
• Copy or Download: Use the "Copy Output" or "Download Output (.txt)" buttons as needed.
• Clear: The "Clear" button will empty both input and output areas and reset any status messages.