You can fix broken dependencies, view config.txt files, or extract textures on a laptop without a full Trainz install. Incredibly useful for asset creators.
The main game uses .ja files for compressed asset bundles. This tool lets you pack custom routes/assets into a .ja (improving load times) or extract assets from a .ja that the in-game tool refuses to open. Trainz Cdp Converter
A classic drag-drop-list window. No learning curve – choose input, choose output, click "Convert." Cons 👎 1. Dated Interface Looks like a Windows XP utility (grey boxes, basic fonts). Not a functional issue, but feels abandoned even when it works. You can fix broken dependencies, view config