Free Online Base64 Encoder & Decoder
Convert files, images, and text to and from Base64 format instantly. 100% client-side processing ensures your data stays private and secure.
New to Base64? Learn what it is and how it works
Base64 Encoder
Convert files, images, or text to Base64 format with drag & drop support. Perfect for embedding data in web applications.
Popular Base64 Tools
Why Choose Base64Kit?
🔒 100% Secure & Private
All processing happens in your browser. No data is sent to servers. Your files remain completely private and secure.
⚡ Lightning Fast
Instant encoding and decoding with real-time preview capabilities. No waiting, no delays, just fast results.
📱 Works Everywhere
Responsive design that works perfectly on desktop, tablet, and mobile devices. Encode and decode anywhere, anytime.
About Base64 Encoding
Base64 is a binary-to-text encoding scheme that's widely used in computing and web development. Our free online Base64 encoder and decoder makes it easy to convert files, images, and text to and from Base64 format without any software installation.
Common Use Cases:
- Embedding images in HTML/CSS
- Email attachment encoding
- Data URLs for web development
- API data transmission
- Configuration file encoding
Supported Formats:
- Images: PNG, JPG, GIF, SVG, WebP
- Documents: PDF, DOC, TXT
- Archives: ZIP, RAR, 7Z
- Any file type up to browser limits
- Plain text and Unicode strings