Click the "Select File" button above, and choose your JAS file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert JAS to another file type
To convert JAS Files to another format, you need Ren'Py or other Game software.
Convert a file to JAS
To convert other file formats to the "Game Asset Archive" file type, you need software like Ren'Py or a similar tool.
About JAS files
The .JAS file primarily functions as a resource archive or image asset for games built with the Ren'Py Visual Novel Engine. Alternatively, it operates as a 3D model and scene file (Just Another Scene) for the macOS application Cheetah3D. Legacy uses include compressed graphics in older PaintShop Pro versions. These are highly proprietary files. Ren'Py archives bundle images, audio, and scripts into an encrypted or compressed block to prevent unauthorized modification. Cheetah3D scenes contain complex, application-specific NURBS, polygons, and lighting data that cannot be read natively by web browsers or Windows machines. Users face issues because opening them requires installing specific, often paid (Cheetah3D) or developer-centric (Ren'Py) software. You must extract or convert them for general use. For Ren'Py assets, users want standard PNG or JPG formats to view the artwork. Cheetah3D files are typically exported to OBJ, FBX, or STL for cross-platform 3D editing or 3D printing, though some specific rigging data is lost in translation. Because both primary formats are closed, standard online converters usually fail. The original software is often necessary to correctly render the data. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.
Convert.Guru analyzes your JAS file, detects the exact format, and lets you read the text inside.
If you want to convert JAS file to OBJ, FBX, DAE, 3DS, MAX, BLEND, MA, MB, C4D, STL, PLY or WRL, you can use Ren'Py or similar software from the "Game Archive and 3D Scene" 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 JAS, try Ren'Py or another comparable tool in the "Game Archive and 3D Scene" category.
The JAS 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 JAS converter.