Convert PDF to images with Nutrient Document Web Services API on Zapier

In this tutorial, you’ll learn how to convert PDF files to images using the Nutrient Document Web Services API on Zapier. This is perfect for generating thumbnails, previews, or publishing-ready assets from PDFs uploaded to a Google Drive folder.

What is Zapier?

Zapier(opens in a new tab) is an automation platform that connects your favorite apps and services with no code required. You can build “Zaps” to automate repetitive tasks by setting up triggers and actions between apps like Google Drive, Slack, Gmail, and more.

In this tutorial, you’ll learn how to use Zapier to convert PDF files to images using Nutrient DWS Processor API.

What is Nutrient DWS Processor API?

Nutrient Document Web Services API is a powerful platform for document automation. With your free account(opens in a new tab), you get 50 credits, which you can use to perform various document operations. Each tool (e.g. conversion, signing, flattening) consumes a different amount of credits depending on complexity.

Nutrient offers more than 30 tools with the ability to:

Convert images and documents to PDF
Merge, split, or reorder pages
Add digital signatures, watermarks, or annotations
Run OCR, redact, flatten, and more

You only need your API key from Nutrient(opens in a new tab) to get started.

What you’ll need

A Zapier(opens in a new tab) account (a pro plan is necessary for multistep Zaps)
A Google Drive account
A PDF file stored in a folder in Google Drive
A Nutrient Document Web Services API key — sign up here(opens in a new tab)

Step 1 — Trigger a new file in Google Drive

Select Google Drive as your trigger app.

Select Google Drive as the Zap trigger

Choose the New File in Folder trigger.

Choose 'New File in Folder' as trigger

Connect your Google Drive account.
Configure:

Drive — Select your Google Drive.
Folder — Choose or create a folder like pdf-to-image.

Configure Drive and Folder in Zap trigger

Test the trigger by uploading a PDF and letting Zapier detect it.

Test step showing PDF file detected

Step 2 — Convert PDF to image (Nutrient DWS Processor API)

Add Nutrient Document Web Services API as the action app.

Select Nutrient DWS Processor API as action app

Choose the Convert PDF to Image action.

Choose 'Convert PDF to Image' action event

Connect your Nutrient DWS Processor API account using your API key.

Paste API key to authenticate Nutrient

You can find your key in the Nutrient dashboard(opens in a new tab).

Find your API key in the dashboard

Fill out the fields:

PDF File URL — Use the file from step 1 (Google Drive).
Output File Name — Optional (e.g. output.png).
Output format — Choose from jpg, png, tiff, or webp.

Map PDF file and select image format

Your PDF must be publicly accessible or Zapier will use a direct download link from Google Drive.

Test the step to confirm the PDF is successfully converted.

Test the PDF to Image conversion step

Step 3 — Upload the image to Google Drive

Add Google Drive again and choose Upload File.

Choose Upload File to save the image

Configure:

Drive — Select your Google Drive.
Folder — Choose where to save the output image.
File — Use the output file from the Nutrient step.

Map output from Nutrient step to upload destination

To avoid Zap loops, don’t upload the output image to the same folder as your input PDF.

Run a test to verify that the image uploads correctly.

Test upload of converted image

Conclusion

You’ve now automated the process of converting PDF files to image formats using Zapier and Nutrient DWS Processor API(opens in a new tab). This is especially useful for generating thumbnails, sharing visual previews, or extracting content from PDFs in image format.

You can continue enhancing this workflow with steps like OCR, watermarking, or extracting tables.

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