Canon catalog index
File type: Various data file
Files with ctg extension can be typically found on memory cards of Canon digital cameras along with captured photos. Contains index and other information for faster loading of the pictures.
Found 4 different file type records with the same ctg filename suffix.
File type category:
Various data file
Date updated: January 7, 2022
File extension ctg seems to be best known for its use for so called catalog files generated by certain Canon digital cameras used since early 2000s.
You can usually find these files on memory cards for each picture set. These are used to provide additional information for viewing and managing of associated photographs.
Most likely used automatically by Canon programs or devices. Should not be manually editted by the user.
You cannot convert these files to anything else, nor you can recover photos from them. You have to look for the actual RAWs.
File type category:
Various data file
Date updated: October 7, 2026
The CTG file extension is associated with the BMC PATROL business and systems management application. A CTG file stores data used internally by PATROL as part of its monitoring and management operations.
PATROL was originally distributed as a standalone application. The product was later integrated into the BMC ProactiveNet Performance Management Suite. The related Windows software includes PATROL and BMC PATROL DashBoard; CTG files are generally legacy application data rather than user-created exchange files.
Open a CTG file with the BMC PATROL software that created or uses it on Microsoft Windows. BMC PATROL DashBoard may also access related PATROL data, depending on the file's role in the installation.
CTG files contain internal PATROL data and are not normally converted directly.
If information must be moved to another format, use an export or reporting function provided by the relevant PATROL installation, when available, rather than modifying the CTG file.
Software applications that handle other tasks involving ctg files:
Microsoft Windows
File type category:
Various data file
Date updated: August 17, 2017
The ctg file extension is associated with the ChessBase, an application for Microsoft Windows that allows users to read information about Chess matches and other.
The ctg file stores various data used for internal purposes of the ChessBase.
The ctg files are used for internal purposes of ChessBase.
Conversion to other formats is not possible.
File type category:
Various data file
Date updated: September 11, 2019
The ctg file extension is associated with the WhereIsIt, a computer media cataloging software available for Microsoft Windows operating system.
The ctg file stores catalog group data from WhereIsIt program.
Probably not meant to be accessed by the user.
Probably cannot be converted to anything else.
Software applications that handle other tasks involving ctg files:
Microsoft Windows
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