GMBCK Converter

Extract text from Game Maker background images (GMBCK)


Drop or upload your .GMBCK file
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How to extract text from your GMBCK file

  1. Click the "Select File" button above, and choose your GMBCK file.
  2. You’ll see a preview, if available.
  3. Click the "Convert file to..." button to extract text information.

Convert GMBCK to another file type

To convert GMBCK background images to another format, you need GameMaker or other Game software.

Convert a file to GMBCK

To convert other file formats to the "Game Engine Graphic Asset" file type, you need software like GameMaker or a similar tool.


About GMBCK files

The .gmbck file is a Game Maker Background Image File used exclusively by GameMaker, a popular 2D game development engine created by YoYo Games. Game developers use these files to store static background graphic assets and associated tiling metadata for game levels. This format is proprietary and strictly tied to the GameMaker environment. Because it is highly specific, users face significant disadvantages when trying to handle the file outside of the engine. Standard image viewers, web browsers, and professional graphic software like Adobe Photoshop or GIMP cannot open .gmbck files directly. This forces users to keep a heavy game engine installed just to view a single background graphic. To use the image externally, you must convert the .gmbck file into standard raster formats like PNG or JPG. Converting to these standard formats makes the image universally accessible, though engine-specific data like room placement coordinates or parallax tiling settings will be lost. This file format is difficult to open or convert because standard image converters do not understand the metadata container wrapped around the visual data. If our analysis detects a supported underlying or embedded image format, viewing or conversion may still be possible.

Convert.Guru analyzes your GMBCK file, detects the exact format, and lets you read the text inside.


FAQ

If you want to convert GMBCK file to JPG, PDF, PNG, GIF, BMP, TIFF, TIF, WEBP, ICO, CUR, PSD or PSB, you can use GameMaker or similar software from the "Game Background Graphic Asset" category. In the File menu, look for Save As… or Export….

To convert RAW, PNG, AI, NEF, PSB, DNG, SVG, GIF, EPS, JPG, ARW or PDF files to GMBCK, try GameMaker or another comparable tool in the "Game Background Graphic Asset" category.



The GMBCK Converter Story

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 GMBCK converter.