Automating the conversion of multi-page PDF documents into individual JPEG images can save you hours of manual work. This guide will walk you through setting up an automated workflow that takes an incoming PDF, splits it into separate image files, and uploads each page directly to a designated Google Drive folder.

Before you begin, ensure you have access to your automation platform (such as Zapier), a PDF conversion tool (like PDF.co), and the target Google Drive account where you want to store the images.

How the workflow operates

When a multi-page PDF is converted to images, the conversion tool generates a list of image URLs (one for each page). To handle this, our workflow uses a Looping step to process each URL individually and upload it to Google Drive.

flowchart TD
    A["Trigger: New PDF Document"] --> B["Action: Convert PDF to JPEG"]
    B --> C["Action: Start Loop (Line Items)"]
    C --> D["Action: Upload JPEG to Google Drive"]
    D --> E{"Is last iteration?"}
    E -->|No| C
    E -->|Yes| F["Workflow Complete"]

Building the automation

Follow these steps to configure your PDF-to-JPG "wood chipper" workflow.

1. 1

   Set up the PDF conversion step

   Add a Convert PDF to JPEG action to your workflow. Map the URL or file object of your incoming PDF to this step. The output of this step will be an array (or list) of URLs, with each URL pointing to a JPEG of a single page.

2. 2

   Create a loop for multi-page documents

   Because the previous step outputs multiple images, you need to add a Looping action (e.g., Loop from Line Items).
   Configure the loop to iterate over the list of URLs provided by the conversion step. Set the iteration limit high enough to accommodate your longest PDFs (e.g., 500).

3. 3

   Configure the Google Drive upload

   Inside your loop, add an Upload File action for Google Drive. Configure the following parameters:

   • Drive & Folder: Select your target destination (e.g., Completed Sketches or PDF->JPG Tool).

   • File: Map this to the current URL from your Looping step.

   • Convert to Document: Set this to False so the file remains a standard JPEG.

   • File Extension: Specify jpg.

4. 4

   Set up dynamic file naming

   To prevent files from overwriting each other, use the loop iteration number in the file name. In the New File Name field, combine the original file name with the current loop iteration.

   For example: [Original_Filename]-[Loop_Iteration]. This ensures your files are saved sequentially, like Sketch-1.jpg, Sketch-2.jpg, etc.

Advanced configurations

Depending on your specific use case, you might want to add extra logic to your workflow to handle complex scenarios.

Configuration Reference

When mapping your fields in the Google Drive upload step, ensure your parameters match the following required structure: