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maptorio is a command line tool to generate browseable web maps from a factorio save file. The map library used is leaflet.js.

This tool was inspired by the factorio mod Google Maps Factorio style by credomane.

Note that this is currently a major WORK IN PROGRESS. It has not been tested on any version other than MacOS and currently does not support the Steam version of the game. I'm looking for help testing.

Here is an example map, generated from a megabase save uploaded by one of the devs that I found on reddit. Unfortunately, I no longer have a link to the actual post.

The megabase linked above is...mega. The initial set of tiles (generated in-game) take up 3.1 gigabytes across 6,786 images. The complete set of tiles takes up 3.6 gigabytes across 9,520 tiles.

A more representative example would be this map, which is 2,167 tiles and 813 megabytes.

How it Works

Maptorio works fairly simply:

  • Create a temporary workspace, copying in the save file
  • Generate a mod named maptorio by rendering a lua template script
  • Start the game, pointing it to the temporary workspace
  • The generated mod iterates over all chunks that have player built entities (or are next to a chunk with player built entities) and renders a screenshot
  • Once the screenshots are generated, copy the screenshots to an output directory
  • Kick off a process that iterates over the screenshots, building new tiles for higher zoom levels
  • Copy in an index.html which loads leaflet.js (and a minimap) plugin


Currently, there are no pre-built binaries and so you'll need to clone this repository and have a Go runtime available.

In addition, you'll need the standalone version of factorio (available from the factorio downloads page). Note that the factorio version you download must be greater than or equal to the factorio version used to make the save you are rendering.

Setup and Usage

First, clone this repository and download the dependencies:

$ git clone git:// $GOPATH/src/
$ cd maptorio
$ go get ./...

Next, copy maptorio.conf.example to maptorio.conf and tweak to taste. The most important setting is binary-path, which must point to the factorio binary you downloaded.

Then, run it:

$ go run cmd/maptorio.go -c maptorio.conf <path to save file>

Once you start, assuming there are no errors, you'll see a Factorio game window open. Do not close the window, it'll be closed automatically once all of the screenshots are rendered.

After the screenshots are rendered and the game is closed, the screenshots will be copied into a new directory, by default this will be "maptorio-" in the current directory.

Maptorio will continue to run, but this time it will be rendering the extra zoom levels by combining tiles from a previous zoom level.

Once it's complete, the output directory will contain:

  • index.html (the actual main webpage)
  • tiles/{4,10} (rendered map tiles)
  • empty.jpg (a small black placeholder for empty tiles)

You should be able to open the index.html directly in your browser, or alternatively you can upload the entire directory to a web server somewhere to share it.

To Do

Following is a list of things I still need to add support for (help is appreciated!)

  • Make the Steam version work
  • Test on Windows
  • Test on Linux
  • Auto-detect factorio binary based on default install directories
  • Cross-compile binaries and host them on Github
  • Figure out the correct math for expected number of tiles. The progress bars generally run over.
  • Update the mod to render chunks that are completely surrounded by other chunks that have been rendered (to avoid having an unrendered block in the middle of a factory)

In addition, most configuration options are not supported yet. You can view maptorio.conf for a description of each.

  • screenshot-resolution
  • grow-chunks
  • show-entity-info
  • time-of-day
  • mod-directory
  • enabled-mods