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.CTG File Extension

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File TypeCanon Digital Camera Catalog File

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Rare Uncommon Average Common Very Common
CategoryMisc Files


File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.


Catalog index file created on Canon digital cameras; stored in the CANONMSC folder and corresponds to other folders saved on the memory card; i.e. "382.CTG" contains information about images in the folder "382CANON."

More Information

CTG files contain information about the number of images stored in each folder on the memory card (typically up to 99). They should not be manually opened or edited by the user. The camera will automatically delete the CTG files when the corresponding images are erased.

CTG files are much smaller than .JPG files and do not contain any image data. Therefore they cannot be converted to JPEG files.

Programs that open CTG files
Not meant to be opened
Not meant to be opened
Updated 11/8/2007

FileInfo - The File Extensions Database

This page contains information about the .CTG extension and its known file associations. Our goal is to help you understand what a CTG file is and how to open it.

The Canon Digital Camera Catalog file type, file format description, and programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and therefore do not publish any information we have not verified.

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