Click the "Select File" button above, and choose your CG file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert CG to another file type
To convert your CG file to another format, you need KiriKiri or other Game software.
Convert a file to CG
To convert other file formats to the "Game Asset Archive" file type, you need software like KiriKiri or a similar tool.
About CG files
A .cg file typically falls into one of two distinct categories: a proprietary graphics container used in visual novel engines like KiriKiri (or NScripter), or a legacy shader script written in NVIDIA's C for Graphics language.
For gamers and modders, the KiriKiri .cg format is a significant hurdle. These files act as archives for game sprites, backgrounds, and event illustrations (often called "CGs" in visual novel terminology). The main problem is that they use custom compression (often related to TLG) and cannot be opened by standard image viewers like Windows Photos or edited in Adobe Photoshop. To access the artwork for wallpapers or archiving, you must convert these proprietary containers into standard raster formats like PNG or JPG.
For developers, a .cg file contains high-level shading language code developed by NVIDIA. While revolutionary at its launch, the Cg Toolkit was deprecated in 2012. Modern engines now rely on HLSL or GLSL. Consequently, opening these files often requires specific legacy compilers or a text editor to migrate the logic. Less frequently, a .cg file may be a JetDB database file or Agilent ChemStation chromatography data, both of which suffer from extreme software lock-in, requiring the original commercial software to interpret the binary data.
Convert.Guru analyzes your CG file, detects the exact format, and lets you read the text inside.
If you want to convert CG file to G, MG, CV, DAG, OBJ, FBX, DAE, 3DS, MAX, BLEND, MA or MB, you can use KiriKiri or similar software from the "Visual Novel Graphics Container" category. In the File menu, look for Save As… or Export….
To convert DWG, DAE, X3D, IGES, WRL, JT, SKP, 3DS, 3DM, OBJ, STEP or FBX files to CG, try KiriKiri or another comparable tool in the "Visual Novel Graphics Container" category.
The CG 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 CG converter.