Seamlessly Fill PDFs from JSON via n8n with JustFill Integration

Seamlessly Fill PDFs from JSON via n8n with JustFill Integration

Effortlessly automate your document management process with the Seamlessly Fill PDFs from JSON via n8n with JustFill Integration. This powerful workflow enables you to collect PDF files and JSON data through n8n, securely map JSON keys to your PDF template fields using JustFill, and receive a filled document all in a matter of moments.

What this workflow does

• Triggers upon submission of an n8n form that includes a PDF upload and a JSON text payload.
• Utilizes the JustFill MCP API to secure a one-time upload slot and transfers the PDF to this location.
• Accesses the uploaded PDF using JustFill to extract the pre-defined template field metadata.
• Parses the JSON data provided and aligns its keys with the JustFill template fields (processing is case- and punctuation-insensitive), thus creating a comprehensive field-ID-to-value map.
• Conveys the mapped values back to JustFill, fills the PDF accordingly, and provides a temporary download URL for the produced file.
• Automatically redirects users from the form response to download the freshly filled PDF.

Use cases

• Generate personalized contracts or agreements by dynamically filling in user-specific data collected via online forms.
• Create consistent and efficient workflows for handling invoices by automating the input of JSON-based customer and transaction data into predefined PDF templates.
• Automate report generation for clients, where data inputs are dynamically pulled from JSON submissions and rendered into robust PDF presentations.

Technical details

• Category: n8n automation workflow
• Tech stack / nodes used: set, code, form, sticky note, form trigger, HTTP request
• Requirements: JustFill account with API key, reviewed JustFill PDF templates, an n8n instance equipped with Form Trigger, HTTP Request, and Code nodes