🔄Base64 Encoder/Decoder
Convert text to Base64 and decode Base64 back to text instantly. Supports file uploads and works completely offline.
🔄 Bidirectional Conversion
Easily switch between encoding text to Base64 and decoding Base64 back to text with a simple tab interface.
📁 File Upload Support
Upload any file to encode its binary contents to Base64, perfect for embedding images or other data.
🌐 Unicode Support
Properly handles Unicode characters, emojis, and international text using UTF-8 encoding/decoding.
⚡ Real-time Processing
See results instantly as you type, with immediate validation and error feedback.
📋 Copy to Clipboard
One-click copying of encoded or decoded results to your clipboard for easy use elsewhere.
🔒 100% Private
All processing happens in your browser. No data is sent to servers or stored anywhere.
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format using 64 different characters. It's commonly used to encode data for transmission over text-based protocols and for embedding binary data in text formats.
Example:
Text: "Hello World"
Base64: "SGVsbG8gV29ybGQ="
Common Use Cases
- •Web Development: Embedding images in CSS/HTML using data URLs
- •API Communication: Sending binary data in JSON or XML formats
- •Email Attachments: Encoding binary files for text-based email protocols
- •Data Storage: Storing binary data in databases that expect text
- •Basic Obfuscation: Simple encoding for basic data protection
- Select operation mode: Choose "Encode to Base64" to convert text to Base64, or "Decode from Base64" to convert Base64 back to text.
- Enter your data: Type your text or Base64 string in the input area, or click "Upload File" to encode a file's contents.
- View the result: The converted output appears automatically in the result area below.
- Copy the result: Click the "Copy" button to copy the encoded or decoded text to your clipboard.
- Clear when done: Use the "Clear" button to reset the tool for new conversions.
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that converts binary data into a text format using 64 different ASCII characters. It's designed to safely transmit binary data over text-based communication channels and is commonly used in web development, email, and APIs.
When should I use Base64 encoding?
Base64 encoding is useful when you need to transmit binary data over text-only protocols, embed binary content in text formats like JSON or HTML, or store binary data in text-based databases. It's also commonly used for data URLs in web development.
Is my data safe and private?
Absolutely! All Base64 encoding and decoding happens entirely in your browser using JavaScript. Your data never leaves your device, is never sent to any servers, and works completely offline after the initial page load.
Does it support Unicode and special characters?
Yes, the tool properly handles Unicode characters, emojis, and international text by using UTF-8 encoding and decoding. This ensures that all text, regardless of language or special characters, is correctly converted.
Can I encode files to Base64?
Yes! You can upload any file type and the tool will encode its binary contents to Base64. This is particularly useful for embedding images in CSS/HTML or sending binary data through text-based APIs. Note that very large files may affect browser performance.
What happens with invalid Base64 input?
The tool validates Base64 input and will display a clear error message if the input is not valid Base64 format. This helps you identify and correct any issues with your Base64 strings before attempting to decode them.