File to Base64 Node

The File to Base64 node receives a fileRef and returns the file content as Base64 and Data URI.

Overview

When to Use

Use this node when:

• an API expects a file inside a JSON field as Base64;
• you need to send file content in a message or payload;
• you want to convert a fileRef into a Data URI;
• another system does not accept multipart upload or binary upload.

Configuration

Outputs

Accessing Outputs

{{ steps["file-to-base64"].outputs.base64 }}
{{ steps["file-to-base64"].outputs.dataUri }}
{{ steps["file-to-base64"].outputs.mimeType }}

Example: Send Base64 in JSON

[Generate File] → [File to Base64] → [HTTP Request]

HTTP body:

{
  "fileName": "{{ steps["file-to-base64"].outputs.name }}",
  "mimeType": "{{ steps["file-to-base64"].outputs.mimeType }}",
  "content": "{{ steps["file-to-base64"].outputs.base64 }}"
}

Round Trip

Use with Base64 to File when you need to convert both ways:

fileRef → Base64 → fileRef

Tips

• Prefer fileRef between QANode nodes. Convert to Base64 only when the external system requires it.
• Base64 increases payload size; avoid it for very large files.
• Use dataUri when the receiving system expects the data:mime/type;base64,... format.