Base64 Encoder & Decoder

Encode text to Base64 format and decode Base64 back to original text. Supports UTF-8, ASCII, and binary data. Works completely in your browser for privacy.

Operation Mode

Input Text

Character Set: Length: 0 characters

Base64 Output

Format: Base64 Length: 0 characters

Advanced Options

URL-safe Base64 (replace +/ with -_) Add line breaks every 76 characters Validate Base64 before decoding

Encoding Type:

About Base64

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used to encode data that needs to be stored and transferred over media designed to deal with text, such as embedding images in HTML/CSS, sending attachments in emails, or storing complex data in JSON.

How to Use

Select your operation mode (Encode, Decode, or Both)
Enter your text in the input field
Click "Convert" to encode/decode
Use the copy/download buttons to save your results
Toggle advanced options for URL-safe encoding or line breaks

Common Use Cases

Web Development: Embed images directly in HTML/CSS
APIs: Send binary data in JSON format
Email Attachments: Encode files for email transfer
Data Storage: Store binary data in text-based formats
Security: Encode sensitive data for transmission