Base64 Encoder/Decoder

Encode and decode Base64 strings with ease

🔒 Encode 🔓 Decode

Input

MIME Type:

Input Method:

Enter text to encode:

Base64 Encoded

Encoded result (Data URL):

Base64 Input

Enter Base64 text to decode:

Decoded Output

Decoded result:

About Base64 Encoding

Base64 Encoding is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used in web development and data transmission.

Common Use Cases:

Encoding images in HTML/CSS
Data URLs for web resources
Email attachments (MIME)
API authentication tokens
Storing binary data in text format
JWT tokens and credentials

Key Features:

Converts binary to ASCII text
Uses A-Z, a-z, 0-9, +, / characters
Padding with = characters
Increases data size by ~33%
Reversible encoding
Safe for text-based protocols

MIME Types and Base64:

Base64 encoding is commonly used with MIME types for embedding data in HTML, CSS, and other text formats. Here are common MIME types:

image/png - PNG images
image/jpeg - JPEG images
image/gif - GIF images
image/webp - WebP images
image/svg+xml - SVG images
audio/mpeg - MP3 audio
audio/wav - WAV audio
video/mp4 - MP4 video
application/pdf - PDF documents
application/json - JSON data
text/plain - Plain text
text/html - HTML documents
text/css - CSS stylesheets
font/woff2 - Web fonts
application/zip - ZIP archives
application/octet-stream - Binary data

Example data URL: data:image/png;base64,iVBORw0KGgo...