Will restic merge small files when backing up?

The source files I want to back up are hundreds of thousands of small files under a few KB. After the backup is completed, there are only a few hundred backup files.Will restic merge small files when backing up?
I tested restoring files from the backup and it worked well.
This is an amazing design, I just come to confirm it.

Restic cuts files into small chunks of approximately 1MB (or smaller for small files). These chunks are then combined into larger pack files. Currently, the default pack size if 16MB.