Base64 Encoder / Decoder

Switch between encode and decode mode. Supports plain text and file upload (encodes file content to Base64). Download output as a file.

Mode

Plain Text

Base64 Output

Or drop any file to encode

File content will be Base64 encoded

How to use Base64 Encoder / Decoder

Encode or decode Base64 text and files.

Select Encode or Decode mode.

Paste text or upload a file.

The result appears instantly. Click Download to save the output as a file.

Is Base64 Encoder / Decoder free to use?

Yes, Base64 Encoder / Decoder is 100% free with no account required and no usage limits.

Is my data private?

Yes. Processing happens entirely in your browser. We never see, store, or transmit your input data.

Does Base64 Encoder / Decoder send data to a server?

No. All processing happens locally in your browser. Your data is never uploaded or transmitted anywhere.

Can I use Base64 Encoder / Decoder with large files?

Yes, though very large files (100 MB+) may be slower depending on your device. For most development use cases, performance is instant.