File Extension Library

.CTG File Extension

  • Developer by: Canon
  • Category: Misc Files

What are .CTG files and how to open them?

Can't open .CTG file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .CTG file.

What is a .CTG file extension?

.CTG file extension is created by Canon. .CTG has been classified as Misc Files.

.CTG is Canon Digital Camera Catalog 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.

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.

How to fix problems with .CTG files

  1. You need to update the application that you normally use to open .CTG files. Only the latest version of the software supports the current .CTG file format
  2. You need to check the .CTG file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)