Document Placeholder Replacer is a reusable extension that dynamically replaces placeholders in DOCX documents using key–value pairs.

It is designed for generating contracts, letters, reports, invoices, and other Word-based templates at runtime.

Key Features:

• Accepts DOCX files as Binary Data input

• Replaces placeholders using configurable formats (default: {{KEY}})

• Supports multiple occurrences of the same placeholder

• Handles placeholders split across Word runs (OpenXML-safe)

• Replaces content in:

  – Document body

  – Tables

  – Headers

  – Footers

• Returns the updated DOCX as Binary Data

• Enforces unique placeholder keys

• Throws meaningful errors for invalid input or corrupted documents

Typical Use Cases:

• Contract generation

• Offer letters

• Invoices and statements

• Dynamic document generation in workflows

• Template-based document automation

This component is built using the OpenXML SDK and is optimized for OutSystems server-side execution.