Base64 to File Node

The Base64 to File node receives Base64 content or a Data URI and creates a file inside QANode, returning a fileRef for the next nodes.

Overview

When to Use

Use this node when:

• an API returns a file as Base64;
• a custom integration produces a Data URI;
• you need to transform Base64 into fileRef before sending it to another node;
• you want to convert Base64 to a real file and then extract it.

Configuration

The user does not need to fill in the MIME type. QANode tries to infer it automatically from:

• Data URI prefix, when present;
• file signature;
• file extension.

Example Data URI:

data:application/pdf;base64,JVBERi0xLjQK...

Example plain Base64:

JVBERi0xLjQK...

Outputs

Accessing Outputs

{{ steps["file-from-base64"].outputs.fileRef }}
{{ steps["file-from-base64"].outputs.name }}
{{ steps["file-from-base64"].outputs.mimeType }}
{{ steps["file-from-base64"].outputs.sizeBytes }}

Examples

API returns Base64 PDF

[HTTP Request] → returns body.documentBase64
[Base64 to File]
  Base64: {{ steps["http-request"].outputs.body.documentBase64 }}
  File name: contract.pdf

Then:

{{ steps["file-from-base64"].outputs.fileRef }}

Convert Data URI image

Base64: {{ steps["custom-js"].outputs.result.imageDataUri }}
File name: screenshot.png

Round Trip

This node is the opposite of File to Base64:

[File to Base64] → [Base64 to File]

or:

[Base64 to File] → [Extract File]

Tips

• Prefer Data URI when the source already provides MIME type information.
• If using plain Base64, provide a file name with extension to help inference.
• To validate the content, chain it with Extract File.