Base64 Encoder / Decoder

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used to encode data for transmission over media that only supports text, such as email or JSON.

Base64 encoding is useful for encoding binary data in JSON, embedding images in HTML/CSS, encoding email attachments, and working with APIs that require text-based data transmission.

No, Base64 is encoding, not encryption. It's a reversible transformation that doesn't provide security. Anyone can decode Base64 data if they have access to it.

Base64 uses 64 characters: A-Z, a-z, 0-9, plus (+) and slash (/). The equals sign (=) is used for padding at the end of encoded strings.

Simply paste or type your text into the input field and click "Encode". The tool will instantly convert your text to Base64 format. You can then copy the encoded result using the copy button.

Paste your Base64-encoded string into the input field and click "Decode". The tool will convert it back to the original text format. Make sure your Base64 string is valid and complete.

Yes, Base64 is commonly used to encode binary data like images. However, this text-based tool works best with text strings. For images, you would typically use a file-based encoder that reads the binary data directly.

Base64 encoding increases data size by approximately 33% because it converts 3 bytes of binary data into 4 ASCII characters. This overhead is acceptable when you need text-safe encoding for transmission or storage.

Yes, Base64 encoding is case-sensitive. The characters A-Z, a-z, 0-9, +, and / are all distinct. Changing the case of any character will result in different decoded output, so be careful when copying Base64 strings.