What is File to Base64 Converter?
File to Base64 Converter encodes any document or binary file into Base64 data and decodes Base64 strings back to files.
How to use File to Base64 Converter
Drop any file to generate a Base64 Data URI, or paste a Base64 string to download the restored binary file.
Key features
- Encodes any file type to Base64
- Decodes Base64 to downloadable files
- 100% private client-side
Common use cases
- Embedding documents and binary payloads inside JSON API requests
Technical details & standards
Uses FileReader API to convert binary ArrayBuffers into Base64 client-side.
Frequently asked questions
Is there a file size limit?
Processing is performed in browser memory; files up to 50MB work smoothly.
Is my data safe?
All processing happens entirely in your browser. Your data never leaves your device and is never sent to or stored on a server.
Does it work offline?
Yes. Once the page has loaded, most tools keep working without an internet connection.