Fill and Sign a PDF When a New SharePoint Item Is Created — Power Automate
Fill a PDF Form is the Power Automate action that accepts a fillable PDF template and a JSON payload, then hands back that same PDF with every field already populated. Pair it with PDF - Sign and a SharePoint When an item is created trigger, and invoice generation runs on its own: someone adds a row, Power Automate assembles the signed PDF, and Dropbox files it away under a timestamped name.
The bottleneck in invoice-style workflows was never the PDF itself, it is the manual step wedged in the middle. Someone opens the template, re-keys eight values from a spreadsheet row, prints it, signs it, scans it back, and uploads the result. Each of those fields is one more chance to misspell a customer name or lose a digit off the total. This guide swaps that whole routine for seven Power Automate actions: SharePoint raises the trigger, Dropbox hands over the template plus the signature image, PDF4me populates the form and applies the signature, and Dropbox saves the finished file. Every screenshot is real, the Compose expression is spelled out, the SharePoint schema is listed, and the sample signed invoice is yours to download.