Getting Started

PPRC batch-converts Pakon F135/F135+ planar raw files into full 16-bit TIFFs with the orange mask removed, giving you the highest-quality starting point for your editing workflow.

Install Node.js

You’ll need Node.js installed (v22+ has significant performance improvements over earlier versions).

If you do not already have Node installed, Volta is the recommended path. It installs Node into your own user account, which avoids the common npm permissions problem that can happen with the standard Node installer:

curl https://get.volta.sh | bash
# Open a new terminal tab or window here.
volta install node

If node --version already works on your computer and shows v22 or newer, you can keep using that install. If you are installing Node for the first time, use Volta unless you have a reason to choose the standard installer.

Install

Install PPRC globally via npm:

npm i -g pakon-planar-raw-converter

If you see Error: EACCES: permission denied, see Troubleshooting.

Quick start

First, open a terminal:

Then navigate to your folder of .raw files. The easiest way is to type cd (with a space) and then drag the folder from Finder or Explorer into the terminal window. Press Enter, then run:

pprc

Processed files will be saved to an out/ subdirectory.

For best color consistency, process a whole roll together when possible. PPRC’s default inversion analyzes the batch as a group, which helps keep results consistent across frames and makes outlier-frame rejection more reliable.

macOS Finder Quick Action

On macOS, run pprc --install-quick-action to add a Finder Quick Action. You can then right-click any folder of raw files and select “Process with PPRC”, no terminal needed.

Updating

PPRC will notify you when a new version is available. To update to the latest version:

npm update -g pakon-planar-raw-converter

Windows XP Note

Please do not try to run PPRC on Windows XP. Everything will be easier and faster if you install on a more modern OS. There is no need to run PPRC from the computer you scanned on.