Security Disclaimer

> This package processes PDF data directly within the main execution context and does not utilize sandboxing, isolated workers, or any form of execution containment.
Accordingly, it provides no warranties or representations, whether express or implied, regarding safety, security, performance, or suitability for handling untrusted, user-supplied, or potentially malicious PDF content.
>
> The software is provided “as is”, without any guarantees of reliability or protection, and no assurance is given that it can safely process adversarial input.
Use in security-sensitive environments or with sensitive data is not recommended unless independent validation, isolation, and appropriate hardening measures are implemented.

Important Information

Your support in the ongoing development of this library would be sincerely appreciated. 🙂


@aaqu/node-red-aaqu-pdf

A Node-RED node for operating on a PDF document.

This module provides a custom Node-RED node that:
- get single page from pdf
- display single page in flow

Get single page form pdf (file, http)

!example.png

Display page in flow - need node-red-contrib-image-tools -> viewer

!example2.png

Create empty PDF and draw text

!create-pdf-draw-text.png

---

Features

- Create empty PDF and draw text
- Select a single page from pdf to buffer
- Convert PDF page buffer to base64 image

---

Installation

Run the following command inside your Node-RED user directory (typically ~/.node-red):

``bash
npm install @aaqu/node-red-aaqu-pdf
`

Then restart Node-RED and the new node will appear in the editor palette.

---

Nodes usage

- msg.payload - pdf buffer
- msg.pdfPage – optional runtime override for the page number (starting at 1).

`text
pdf multi page buffer → [pdf get page] → pdf single page buffer
`

where:
- pdf multi page buffer input multi page buffer.
- pdf get page extracts the configured page (or the page defined in msg.pdfPage) default page no 1.
- pdf single page buffer return single page buffer.


#### pdf to img

!node-pdf-to-img.png

- msg.payload - pdf buffer input

`text
pdf buffer → [pdf to img] → out base64
``

where:
- pdf buffer a pdf file as buffer.
- pdf to img extracts the page to image.
- out base64 return image in base64 (to display use node-red-contrib-image-tools -> viewer).

#### pdf create

!node-pdf-create.png

create PDF document

#### pdf add page

!node-pdf-add-page.png

adding a page

#### pdf save

!node-pdf-pdf-save.png

buil final PDF

#### pdf draw text

!node-pdf-draw-text

add text to page PDF

---

Use cases

- Fast display pdf in flow editor.
- Extracting pages from automatically generated reports.
- Preparing single-page documents for downstream processing.
- Splitting large PDFs into smaller parts.
- Creating lightweight attachments for email or APIs.

---

License

Apache-2.0