.CTG File Extension

Canon Digital Camera Catalog File

Developer Canon
3.5  |  171 Votes
Category Misc Files
Format N/A

What is a CTG file?

A CTG file is a catalog index file created by Canon digital cameras. It contains information about the number of images stored in each folder on a camera's memory card (typically up to 99). CTG files are stored in the CANONMSC folder and they correspond to other folders saved on the memory card.

More Information

You should not manually open or edit CTG files. The camera will automatically delete the CTG files when the corresponding images are erased.

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

Common CTG Filenames

382.ctg - This is an example of a CTG filename. It contains information about images in the "382CANON" folder.

Open over 400 file formats with File Viewer Plus.Free Download

Programs that open or reference CTG files

Not meant to be opened
Not meant to be opened
Updated November 29, 2016

Verified by FileInfo.com

The FileInfo.com team has independently researched the Canon Digital Camera Catalog file format and Mac and Windows apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

If you would like to suggest any additions or updates to this page, please let us know.