Base64 Encoder & Decoder

Encode text to Base64 or decode Base64 strings with support for URL-safe encoding

URL-safe Base64 (replace +/ with -_, remove padding)

Text Input0 characters

Base64 Output

0 characters

Common Use Cases

HTTP Basic Authentication:

Authorization: Basic [base64(username:password)]

Data URLs (inline images):

data:image/png;base64,[base64_encoded_image]

JWT Token:

JWT tokens use URL-safe Base64 encoding for header and payload

About the Base64 Encoder & Decoder

Encode text to Base64 or decode Base64 strings back to readable text. Essential for data transmission, API authentication, embedding images, and working with binary data in text-based formats.

Features:

Instant encoding and decoding
Support for UTF-8 text encoding
Handle special characters and emojis
URL-safe Base64 encoding option
Error detection for invalid Base64
Copy to clipboard functionality
Character count for input and output

Use Cases:

API authentication (Basic Auth headers)
Embedding images in HTML/CSS (Data URLs)
Email attachments (MIME encoding)
Storing binary data in JSON/XML
URL-safe data transmission
Encoding credentials for configuration
Debug encoded API responses

What is Base64?

Base64 is an encoding scheme that converts binary data into ASCII text format using 64 characters (A-Z, a-z, 0-9, +, /). It's commonly used to encode data that needs to be stored or transferred over media designed to handle text.