Where is the Base64 encoding and decoding done?

The process happens entirely in your browser; your file never leaves your device.

Which file types can you upload to this tool?

You can upload plain text files (.txt), .b64, and .base64 files. You can encode the uploaded file to Base64 or decode the Base64 text inside it.

Do Turkish characters cause problems when encoding to Base64?

No, the tool is UTF-8 safe and preserves Turkish characters. URL-safe Base64 output is also available.

What happens if the Base64 data I decode contains binary data (image, file) instead of text?

In this case, the tool shows a warning indicating that the content does not contain readable UTF-8 text and cannot be displayed as text. You can download the result to use it.

How can you download the decoded content?

You can download the decoded content as a .txt file using the download option in the result area. The downloaded file is named decoded.txt.

Base64 Encode/Decode — Free Online Tool

URL-safe

📎 File → Base64

Auto-deleted in 7 days

256-bit SSL

Support

Your files are encrypted with SSL and automatically deleted from our servers 7 days after processing.

📖 How to Use

Upload document

Drag-drop or pick file.

Set options

Choose operation and parameters.

Process

Server runs the task.

Download

Get result in your format.

Frequently asked questions

No, there is no separate padding toggle or line wrapping control. In URL-safe mode, padding is automatically removed, but this is not an option you can adjust.

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Base64 Encode / Decode