Base64 Encoder & Decoder
Encode or decode Base64 strings for web, API, token, and log analysis workflows.
Interactive workspace
Inputs stay on your device — nothing is sent to our servers unless you choose to share.
Encode files to Base64
Upload any file to convert it to a Base64 string. Max 100MB.
Click or drag a file here
Maximum file size: 100MB
Results History
No history yet. Process some text to see your history here.
Quick Examples (Click to Use)
Encode Examples
SGVsbG8gV29ybGQ=MTIzNDU2QmFzZTY0IFRlc3Q=Decode Examples
SGVsbG8gV29ybGQ=MTIzNDU2QmFzZTY0IFRlc3Q=Security Notice
- Base64 encoding is not encryption — it is reversible encoding only
- All processing runs in your browser; nothing is sent to a server
- Use the source charset when decoding legacy or non-UTF-8 text
- Do not decode files from untrusted sources
- Always use proper encryption for sensitive data
About Base64 Encoding
Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format. It's commonly used for encoding binary data in email messages, storing complex data in JSON, and embedding images in HTML. Base64 encoding increases the size of the data by approximately 33% due to the encoding overhead.
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