Extract text from GameMaker resource files (GMRES)
To convert GMRES resource files to another format, you need GameMaker or other Game software.
To convert other file formats to the "GameMaker Resource File" file type, you need software like GameMaker or a similar tool.
The .gmres file format is a GameMaker Resource File used by GameMaker (originally developed by YoYo Games) to manage and organize assets for 2D game development. These files act as configuration or container elements that define resources such as sprites, sounds, objects, rooms, and scripts within a game project.
The primary disadvantage of the .gmres format is its strict, proprietary tie to the GameMaker ecosystem. It is essentially useless if you want to migrate a game to other popular engines like Unity or Godot. Furthermore, these files often do not contain raw binary media (like pixels or audio waves). Instead, they store structured data - usually in JSON format - that points to external media files stored elsewhere in the developer's project directory.
Standard online file converters fail completely with .gmres files because they look for standard media headers rather than parsing proprietary asset references. If you want to use the assets in another engine, your best conversion targets are standard formats: you must extract the image references to PNG, audio to WAV or OGG, and scripts to standard text or GML.
This format is exceptionally difficult to convert directly because only the GameMaker IDE fully understands the project architecture required to properly compile the game. If our analysis detects the underlying JSON text or embedded media, we can display the raw content, allowing you to manually locate and recover your media asset paths.
Convert.Guru analyzes your GMRES file, detects the exact format, and lets you read the text inside.
If you want to convert GMRES file to , you can use GameMaker or similar software from the "Game Asset Storage" category. In the File menu, look for Save As… or Export….
To convert files to GMRES, try GameMaker or another comparable tool in the "Game Asset Storage" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our GMRES converter.