Add a Signature Image to Scanned PDFs Using OneDrive, PDF.co, and Zapier
Scan documents into OneDrive, automatically add a signature image with PDF.co, and save the processed PDFs.
This workflow places a visible signature image on the PDF; it does not create a certificate-based digital signature.
Prerequisites
- PDF.co and Zapier accounts.
- A OneDrive for Business account with a supported Microsoft 365 subscription. See Zapier’s OneDrive requirements.
- Separate OneDrive folders for incoming scans and processed PDFs.
- An accessible URL for your signature image, preferably a transparent PNG.
Step 1: Scan a Document into OneDrive
Open the OneDrive mobile app, select the + button, and choose Scan photo.
Capture the document, adjust its crop and orientation, and save it as a PDF in your incoming-scans folder.
Step 2: Configure the OneDrive Trigger
Create a Zap and select OneDrive with the New File trigger.
Connect your Microsoft account and select the incoming-scans folder. Test the trigger and choose your sample PDF.
The trigger’s Download URL will supply the source document to PDF.co.
Step 3: Add the Signature Image
Add PDF.co and select Add Image to PDF. Connect your PDF.co account through OAuth.
Configure:
- Source File URL: Map Download URL from OneDrive.
- Image URL: Enter your signature image’s accessible URL.
- X Coordinate and Y Coordinate: Enter the signature’s position.
- Width and Height: Set the image size, preserving its proportions.
- Pages: Enter
0to place the image on the first page.
To find the position, open the PDF.co PDF Inspector, load your sample PDF, and inspect the intended signature location.
Page numbering starts at 0. Leaving Pages blank adds the image to every page. See the Add Image documentation.
Test the action and open the returned PDF URL. Check the signature’s position and size.
Step 4: Save the Processed PDF
Add OneDrive’s Upload File action.
Select your processed-PDFs folder, map the PDF.co output URL to File, and specify a PDF filename.
Keep this destination separate from the trigger folder to prevent repeated processing. Test the upload, verify the saved PDF, and publish the Zap.
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