Extract text from Index and archive files (CFS)
To convert CFS Archives to another format, you need Apache Lucene or other Database software.
To convert other file formats to the "Compound Search Index File" file type, you need software like Apache Lucene or a similar tool.
The .CFS file extension generally represents a Compound Index File used by Apache Lucene, a widely adopted open-source search engine library. Lucene combines multiple search index database files into a single .CFS file to prevent operating systems from running out of open file handlers. Alternatively, .CFS is used as a proprietary game asset archive by developers like Perfect World, Electronic Arts, and ESTsoft to pack 3D models, textures, and sounds into a single file. Less commonly, it acts as a Compact File Set archive by Pismo Technic, or a data acquisition file for Cambridge Electronic Design hardware.
These formats present severe challenges for standard conversion. They are highly specialized, machine-readable databases or heavily compressed, proprietary archives. You cannot simply convert a .CFS file into a PDF or JPG because it does not contain a single printable document or image. Game archives, in particular, use closed encoding, meaning only the original game engine or custom community-built modding tools can properly read or export the internal data.
Because of these limitations, standard online document converters fail to process .CFS files. However, convert.guru offers a practical workaround. Just drag and drop your file to identify the format, view its internal structure, and convert it when possible. If our analysis detects a supported underlying or embedded format - like a standard archive structure, zlib compression, or readable text strings - viewing or extraction may still be possible.
Convert.Guru analyzes your CFS file, detects the exact format, and lets you read the text inside.
Users also converted CFSS, CFS23, CSF, CFX, CSV, FCS, PDF, CFA, OBJ, ZIP, FTL, TTL and AVRO files.
If you want to convert CFS file to MGD, CMS, GPD, MPH, ISO, IMG, DMG, VHD, VMDK, VDI, HDD or QCOW, you can use Apache Lucene or similar software from the "Search Index Database Storage" category. In the File menu, look for Save As… or Export….
To convert VFD, DMG, OVA, IMA, VBOX, ADF, PVS, VHD, OVF, ISO, DSK or IMG files to CFS, try Apache Lucene or another comparable tool in the "Search Index Database 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 CFS converter.