Base64 Encoder
Encode text and files to Base64 format
About this Tool
Base64 Encoder is a free, privacy-first tool built for developers. Encode text and files to Base64 format
All processing in your browser
Instant results, no delays
No signup, no limits
Upload or paste content
Saved locally for quick access
Disclaimer
This tool is provided for informational and educational purposes only. All processing happens entirely in your browser - no data is sent to our servers. While we strive for accuracy, please verify critical data before use in production environments. FormatKit is not responsible for any data loss, corruption, or issues resulting from tool usage.
How to Use Base64 Encoder
Upload a file or paste your text into the input field and it will be automatically encoded to Base64 format in real-time.
Features
- Real-time encoding as you type
- UTF-8 support for international characters
- Copy encoded text with one click
- Download as text file
- Character count display for both input and output
Common Use Cases
- Email attachments: Encode binary data for email transmission
- Data URIs: Create Base64 data URIs for embedding images in HTML/CSS
- API authentication: Encode credentials for Basic Authentication headers
- Data storage: Store binary data in text-based formats like JSON or XML
FAQ
Q: Can I encode files?
Yes! You can drag and drop a text file or click to browse and upload. The file content will be automatically encoded to Base64.
Q: Is Base64 encoding secure?
No, Base64 is encoding, not encryption. It's designed for data transfer, not security. Don't use it to protect sensitive information.
Q: Does it support Unicode characters?
Yes! The encoder properly handles UTF-8, so international characters and emojis work perfectly.