Build an Arma Reforger server config.json

Arma Reforger Server Config Generator

Build an Arma Reforger server config.json with guided settings, Workshop mod management, live validation, and export tools.

stored in your browser · nothing uploaded
Direct JSON editing bypasses the form controls. Apply only after validating the syntax and structure.
Config editor

Mods

Search the Workshop by name, paste a mod ID, or send mods over from the mods browser.

Startup command

Build the command used to launch the dedicated server. These parameters are separate from config.json; copy them into your startup script or host panel.

config.json preview

Your config is edited and stored in your browser only. Importing an existing file preserves fields the form does not know about.

How to create an Arma Reforger server config

Start blank or load the example, then fill in the server name, bind address and port, scenario ID, player limit, and admin list. The output is a complete config.json you pass to the dedicated server with -config.

The settings that matter most

bindPort and a2s ports must be reachable, game.scenarioId must match a scenario the server can load, and game.mods must list every mod plus its dependencies. Most failed startups come from one of those three.

Adding mods

Add mods from the Mod Browser or the Mod Manager and they appear in the draft here. You can also paste a game.mods array directly.

Checking the result

Validate the finished file with the Config.json Validator before restarting. The config.json guide and troubleshooting guide cover the fields in depth.

Frequently asked questions

Where is my config stored while I edit it?

In your browser, in local storage. Nothing is uploaded. The working config is shared with the mod browser and mod manager on this site, so Add to Config buttons all update the same draft.

Can I import an existing config.json?

Yes. Paste or upload your current config. Fields the form does not know about are preserved untouched and appear in the JSON preview and in the exported file.

Does the generator support comments in config.json?

No. JSON does not support comments, and the Arma Reforger server expects plain JSON. The generator will not pretend otherwise; use the name field on mod entries to label them instead.