Features
- Encode text to Base64
- Decode Base64 back to text
- Encode files (images, PDFs, any binary)
- Decode Base64 into downloadable files
- URL-safe Base64 variant supported
- Works offline
- No signup, no upload
How it works
- Open freebase64.app
- Paste text or drop a file
- Choose encode or decode
- Copy the Base64 string or download the decoded file
Common use cases
- Creating data URIs for embedding images in HTML/CSS
- Decoding JWT token payloads
- Inspecting encoded API payloads
- Encoding binary files for email or text-only transports
- Debugging authorization headers
How it compares
Base64encode.org works well but has ads. Command-line tools like `base64` are developer-friendly but not always available. Freebase64 combines browser convenience with ad-free experience and file encoding support.
Privacy
All encoding and decoding happens in your browser. Useful for sensitive data like API keys or auth tokens that shouldn't be sent to a third-party service.