Base64 Encoder/Decoder
Encode files or text into Base64 strings, and decode Base64 strings back into downloadable files or viewable text.
Encoder
Decoder
How to Use
Encoding
- Choose to encode from a file or from text.
- If from file, select the file using the file input.
- If from text, paste your text into the textarea.
- The Base64 output will appear automatically.
- Click "Copy to Clipboard" to copy the Base64 string.
Decoding
- Paste your Base64 string into the decoder textarea.
- Click "Decode" to process the data.
- If it's text, it will be displayed; if binary, use "Download as File".
- Specify a filename and click "Download as File" to save the decoded data.
Use Case Examples
Embedding Images
Encode images to Base64 for embedding directly in HTML or CSS.
Data Transmission
Encode binary data for safe transmission over text-based protocols.
Configuration Files
Decode Base64 encoded configuration data back to readable format.
Frequently Asked Questions
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used for embedding images in HTML/CSS or transmitting binary data over text-based protocols.
Is my data secure?
Yes! All encoding and decoding happens locally in your browser. Your files and data never leave your device or get transmitted to our servers, ensuring complete privacy.
What file types can I encode?
You can encode any file type - images, documents, executables, etc. The tool will handle binary data correctly and produce a valid Base64 string.
Related Tools
After encoding/decoding, use our Diff Checker to compare encoded and decoded data, or try the Code Formatter to format decoded text.