Base64 Encode/Decode

Base64 is a binary-to-text encoding scheme that converts binary data into an ASCII string format using 64 characters. It's commonly used to embed binary data in text-based formats.

Base64 takes 3 bytes (24 bits) of binary data and converts them into 4 ASCII characters (each representing 6 bits). This increases the data size by approximately 33%.

Base64 uses 64 characters: A-Z (26 uppercase), a-z (26 lowercase), 0-9 (10 digits), + and /. The = character is used for padding.

Yes, all processing is done locally in your browser. No data is sent to any server, ensuring 100% privacy and security.

URL-safe Base64 replaces + with - and / with _, and removes padding (=). This makes it safe to use in URLs and filenames without encoding issues.

Base64 converts 3 bytes into 4 characters, resulting in a 33% size increase. This overhead is necessary to represent binary data as printable text.

Base64 is used for embedding images in CSS/HTML, encoding email attachments (MIME), storing passwords in databases, transmitting binary data over text protocols, and data URIs.

Yes, as long as it's a valid Base64 encoded string. If the string contains invalid characters or incorrect padding, the tool will alert you.

Padding (=) ensures the Base64 string length is a multiple of 4. It's added when the input data length isn't divisible by 3.

Yes, Base64 can encode any binary data including images. The result is a text string that can be embedded directly in HTML/CSS using data URIs.

No, Base64 is encoding, not encryption. It's easily reversible and provides no security. It's meant for data representation, not protection.

UTF-8 is a character encoding for Unicode text. Base64 is a binary-to-text encoding scheme. UTF-8 represents text characters; Base64 represents binary data as text.