Core Docs - Core Concepts - Intro to Merge Documents

Rock Version: v19.0
Last Modified: 2026-07-16 1:38 PM

Imagine generating a personalized giving statement, a baptism certificate or a mail-merge letter straight from your Rock data, formatted and ready to send. That is exactly what merge documents do: they let you use Lava, Rock's templating language, to build formatted documents, not just web pages.

Rock ships with two formats:

For example, a Word merge document can turn a family's giving records into a formatted year-end statement in seconds. The sample documents show a few finished results so you can picture what is possible.

Next we'll look at how to manage and use merge documents, then how to create and format your own.