What is base64 encoding?

Base64 encoding is a method of converting binary data into ASCII text format. It's commonly used for embedding images in HTML, encoding data in URLs, and transmitting binary data over text-based protocols. Our free online tool encodes and decodes base64 data instantly in your browser.

Is the base64 converter free?

Yes, completely free with no registration required.

Yes, all processing happens in your browser - your data never leaves your device.

Can I convert large files?

Yes, you can convert text and files to base64 format directly in your browser.

Base64 Encoder/Decoder - Encode & Decode Base64 Online | DevTools Pro

Free Online Developer Tools

All Tools

Base64 Converter

Encode and decode text and files to/from Base64

Upload File (Optional)

Text to Encode

Encoded Output

Text Encoding

Convert text strings to Base64 format

File Support

Encode files and decode back to files

Real-time

Instant encoding and decoding

Usage Examples

Text Encoding:

"Hello World" → "SGVsbG8gV29ybGQ="

Common Uses:

• Embedding images in HTML/CSS
• API authentication headers
• Binary data transmission
• Email attachments

Base64 Encoder & Decoder

Our Base64 converter is a versatile tool for encoding and decoding data in Base64 format. Essential for web development, API integration, and data transmission, this tool handles text, binary data, and file uploads with precision and speed.

Common Use Cases

•Encoding images for data URIs in web pages
•Decoding API responses containing Base64 data
•Converting binary files to text format for transmission
•Encoding credentials for HTTP Basic Authentication
•Processing file uploads in web applications

Who Benefits from This Tool

•Web developers working with data URIs
•API developers handling binary data transmission
•Mobile app developers processing file uploads
•DevOps engineers managing configuration data
•Security professionals encoding sensitive data

Frequently Asked Questions

What types of data can be Base64 encoded?

Base64 can encode any binary data including images, documents, audio files, and text. It's commonly used for embedding binary data in text-based formats.

Is Base64 encoding secure?

Base64 is an encoding method, not encryption. It's not secure for sensitive data but is useful for data transmission and storage in text formats.

Can I encode large files?

Yes, our tool can handle large files, though very large files may take longer to process. The tool is optimized for typical web development use cases.