Skip to content

File type: Chrome Download File


The CRDownload file extension represents a file downloaded in the google chrome browser or Chromium. It can be in one of the following status:

  • Partially downloaded or in progress.
  • A cancelled download.
  • A paused download

If you see this file type on your computer make sure you are not already downloading something. It is either unconfirmed or uncompleted.

Usually .crdownload files are incomplete. When the download finishes google chrome deletes the file from the system. If there is an interruption it will not be possible to delete it automatically. In this case the user will have to delete it manually.

In general this format is useless. It can not be viewed or recovered. But before deleting it, make sure you run google chrome. The browser will do some checks with it.

How to recover or convert a .CRDOWNLOAD file

If you are using Google Chrome or Chromium your download is is this format before finishes. If there is an interruption you can recover the file partially.

  1. Search for your crdownload file.
  2. Delete the extension .crdownload.
  3. Open with the appropiate program. Depending on the download type it can be a document, an image, a video.
  4. If it doesn't work you will have to download it again.

How to open CRDownload File online free

The following openers are available. Select an opener or reader application and download it.

Category: Web Files or misc.
File format: Open-Source
Open with Windows:
Open with Linux:
Open with mac os:
This extension was created by google.

How to convert file from CrDownload to MP4

There is no way to do the conversion online and free. However, if the downloaded file is a MP4 then you can rename it to .MP4. This will be like a conversion.

For example, video.crdownload will be renamed to video.mp4


Unconfirmed CRDownload Virus

The unconfirmed is a file, with the name 325046.crdownload that is a virus. It is a trojan virus. The idea of this archive is to access remotely to steal information. Be aware and don't download any filename like this.


How to resume

To resume it you have to manually unpause or resume the download file.


Can I Delete the file

You can delete the crdownload file safely if the download is finished. However if the download is paused or running you have to wait for it to finish.

File type: Cheat Engine Cheat Table


The CT file extension is used to symbolize the Cheat Table files saved by the Cheat Engine software users. As the application's name suggests, it is intended to provide video game players with a distinct advantage by allowing them to cheat on majority of computer gaming applications. This format file can only be made accessible or modified through the use of the Cheat Engine program.

The CT format file is used as a container unit for the listing of different game attributes which can be shared with other players of the same video game to omit the need for retyping the cheat commands during runtime of the game.

The contents of this file normally cover manual addresses, pointers, and scripts which are broken down to allow the use of unlimited resources during the game time.


Detailed information 

Category: Data Files
File format: Open-Source
Open with Windows: Cheat Engine
Open with Linux: N/A
This tool is basically an open-source utility which allows other game developers or players with programming experience to implement additional feature sets (authorized or otherwise) for the application. The CT file extension supports useful functionalities which can be used for debugging of computer games and normal programs as well.
The program responsible for creating this file format also features a memory scanner module to search for application variables utilized during the game. This provides the gamer with the ability to change their values. The CT file extension also supports the assembler, disassembler, trainer maker, speedhack, system inspection tools, and direct 3D manipulation tools of the software.
The installation process includes the extraction of a tutorial file intended to serve as a reference for users with no programming background. The Cheat Engine is currently the most popular free application in the market in the area of cheating software.
During the earlier part of its deployment, it also made a tremendous impact on the online gaming market providing players using the application with an advantage against their competitors. The CT format file is also used in relation to the creation of Aimbots.

File type: Hypertext Cascading Style Sheet


The CSS file extension represents the Hypertext Cascading Style Sheet document, a specification developed intentionally for the delivery of style sheets in Web pages. Style sheets allow the developer to design a specific look and apply the design in various places via simple instruction sets.

Cascading technology allows the application of styles within styles in a Web page.

The CSS format file provides the user with the functionality of formatting fonts, tables, line spacing, text indentation, and object positioning relative to a specific Web page.

The CSS format supports the stylesheet language that works in conjunction with the markup language used in Web page programming.

In this context, this format file is commonly found together with an XHTML and HTML file formats with additional functionality for inclusion in XML, XUL, and SVG document types.


Detailed information 


Category: Web Files
File format: Open-Source
Open with Windows: Any Standard Text Editor, Internet Explorer, Windows-based Web browsers
Open with Linux: Any Standard Text Editor, Linux-based Web browser
The separation feature provided by the CSS file extension allows the improved accessibility of content, control of particular characteristics associated with the presentation, reduction of repetition and complexity with regards to structural content. It also provides additional Web page flexibility.
The specifications related to this development language are maintained by the W3C (World Wide Web Consortium) which was registered with the RFC 2318 in March 1998.
The syntax utilized by this scripting language is basically composed of keywords in conventional English primarily for describing style properties. Every rule covers a number of selectors including a declaration block.
This block is made up of declarations enclosed with braces and is terminated by semicolons.
Pseudo-classes can also be utilized for defining additional content behavior like when pointing to a visible element associated with a mouse cursor over functionality. Some examples of these pseudo-elements and pseudo-classes are :before, :lang, :visited, or :first-line.

File type: eCopy Scanned Document, Atari Ramdrive CPY Commands, Cobol Include, Copy Books Data File, RM/COBOL Development System Include, CryptaPix Encrypted.


The CPY file extension is utilized by a number of software applications. The application eCopy uses the CPY file extension as a Scanned Document, Atari Ramdrive uses it as a CPY Commands document, Cobol uses it as an Include file, Copy Books uses it as a Data File, RM/COBOL Development System uses it as an Include File, and CryptaPix as an Encrypted file.
The ECopy, when run, allows the user to work in a more efficient and faster manner with the created PDF files via document sharing.
It allows the user to easily combine, edit and capture documents that have been scanned; hence, the user's originally scanned documents will appear as any other electronic files.
When the file is run, it allows the sharing of digital copiers and scanners that easily convert paper-based documents into digital-type information.

Detailed information 

Category: Text files, Setting files, Developer files, Data files
File format: Proprietary
Open with Windows: eCopy, Atari, Cobol, Copy Books, RM/COBOL Development System, CryptaPix
Open with Linux: COBOL
Another familiar program using the CPY file extension is the Atari Ramdrive. The Ramdrive has 2 links, namely, the RAMDRIVE.CFG and RAMDRIVE.CPY. When the RAMDRIVE.CPY is run, it operates in the same manner as that with the RAMDRIVE.CFG file.
The file extension's most helpful function is the formatting of ramdrives.
The RAMDRIVE.CPY file enables the user to copy selected Atari files as well as format these selected files. The program however operates only on Atari 8-bit computers.



File type: Microsoft?s NET Application Configuration Information, CRiSP Harvest file, Rockbox Configuration File, WatchDirectory Task Information, Pro/ENGINEER configuration, DataFlex configuration file and the Delphi project configuration


The CONFIG file extension is most commonly used in program configuration files. The file extension is utilized for server processes, Operating System settings as well as user applications.

The .config file extension is used by various programs such as the Microsoft's NET Application primarily for the purpose of creating configurable applications. This file can be utilized by a number of applications with the NET framework as its basis.

The configuration application is most useful when there is a need to save a number of settings in just a single element; thus eliminating naming conflicts as well as making the work simpler when working with a number of configurations.

The .config file extension, when used by the application, is also helpful when the application has a reference to numerous DLLs that are able to read the configuration information. With the file extension, a Section Group can be set up to create a group consisting of two or more section elements.


Detailed information 


Category: Text files
File format: Proprietary
Open with Windows: Microsoft Outlook 98 Standard Edition, Microsoft?s NET, CRiSP, Rockbox, WatchDirectory, Pro/ENGINEER, DataFlex, Delphi
Open with Linux: CRiSP, Rockbox, WatchDirectory, Pro/ENGINEER, DataFlex, Delphi
Other programs that make use of the .config file extension include CRiSP as a Harvest file, Rockbox as a Configuration File, WatchDirectory as a Task Information file, Pro/ENGINEER and DataFlex as a configuration file, and Delphi as a project configuration file.
Usually, the file will have a similar root name with the application it refers to. For example, the file may present itself as exe.[resource ID].config. To identify the program using the file extension, the file's date and time as well as the location of the file can direct the user to what program actually created the file.

File type: Java Class


The CLASS file extension defines the Java program's functions as well as its variables. The CLASS file extension has a connection with the bytecode Java programming language programmed by Sun Microsystems.

The syntax used in the Java programming language is greatly influenced by C and C++; however, it has lesser low level facilities and uncomplicated object model.

When a source code file is compiled by a Java compiler, the latter will save the results in a CLASS file. The CLASS file could be subsequently loaded via the Java Virtual Machine. A number of software applications had been related to the CLASS file extension such as Classifieds Script, Turnkey Site, Classified Ads Secrets. ZipOffice 10 Classic, Software License Transfer- Class 1, Saver Pix-Class Chassies #1 and #2, Directory Classifier, PAD Service Classic and Foreign Language Game Collection (class-room).


Detailed information 

File format: Proprietary/Open Source
Open with Windows: Java virtual machine, Notepad, Classifieds Script, Turnkey Site, Classified Ads Secrets. ZipOffice 10 Classic, Software License Transfer- Class 1, Saver Pix-Class Chassies #1 and #2, Directory Classifier, PAD Service Classic, Foreign Language Game Collection
Open with Linux: Java virtual machine
When the user experiences a CLASS file extension error, this may be attributed to an incorrect program installed or a system error with its roots to the system registry.
Any user utilizing the CLASS file extension may experience problems related to the computer's performance and stability. Memory and CPU usage for the CLASS files may likewise be affected.

File type: CAJViewer Full-text database


What is

The CAJ file extension is a file created though the CAJViewer application. This application is similar to Adobe Acrobat. It also creates files similar to a word processing document; however, these files cannot be edited because they have image-like properties.

The files created and allowed to be read using the CAJViewer are limited to Chinese documents only. The CAJViewer application was made by the Tsinghua Tongfang Optical Disc Co., Ltd.

There are only a limited number of CAJViewer users, which are usually software informers. Just like other programs, CAJViewer has many versions but the most widely-used are the 7.0 and the 6.0. Sometimes, the CAJ file is associated with one of its executable files, the caj.exe. Other executable files of the CAJViewer are CAJVieweru.exe and CAJViewer.exe.

Detailed information 

Category: N/A
File format: Proprietary
Open with Windows: CAJViewer
Open with Linux: N/A
Furthermore, the CAJ file created with the CAJViewer is similar to a PDF file. However, this file is formatted using the Chinese language only.
The CAJ files are commonly created, used, and distributed for academic purposes like academic journals or for schools and universities.
Chinese-based websites commonly use the CAJ file to share copyrighted documents. Users can search for specific CAJ files in a CAJViewer database. However, just like the PDF file that can only be opened using the Adobe Acrobat Reader, the CAJ file can only be read using the CAJViewer application.
So far, there is no other application that can open CAJ files other than the CAJViewer.



File type: Canon Catalog Index

What is a CTG File extension

The CTG file extension is in the area of digital photography and video recording.

This particular format file is part of the Canon brand of digital cameras and recorders. There it serves as the representation for catalog index files created in the memory card of the device. And it normally resides within the folder CANONMSC.

Folder CanonMSC

The device in the memory card automatically creates this folder. It usually corresponds to other folders stored in the memory card used by the Canon devices. As a catalog, the CTG format file normally contains data on the number of images stored (or used to be stored) within the different folders created in the memory card.

The images commonly have a limit of 99 images associated with a catalog file. And anything that exceeds this number would prompt the creation of a new CTG format file.

One cannot open or edit this file manually. And it will be automatically deleted or erased by the camera device once the associated files are no longer present in the unit.

How to open CTG Files


Programs that can edit or convert this files.

Category: Miscellaneous File
File format: Proprietary
Open with Windows:
Open with Linux: N/A


Open with

  1. Search for the .ctg file in your device
  2. Double click on it
  3. Select open with option
  4. From the drop down list of apps and software select the viewer, app or program zoombrowser. If there is not any viewer installed you will have to download one of the programs we mentioned in the previous section.



  1. Open one of the nomedia viewers installed: zoombrowser from cannon
  2. From the application go to the menu of files to open the .ctg file from your device.
  3. Now you can view the format in the app.

The image Size

Compared with JPG image file formats, the CTG file extension is smaller in size but does not contain any image data which means that it cannot be transformed into any other image format.
Although closely identified with the Canon PowerShot digital camera series, this file format can also be utilized by other Canon photograph equipment. The bulk of the data contained in the catalog file primarily reference internal information associated with pictures taken with the camera and stored in its expanded memory. This proprietary format of the Canon application is also for an archive collaboration between the index files and the component data. Data streams are normally differentiated based on the recording timestamps attached to the image files logged into the catalog file.
When formatting the memory card directly from the camera device, the CTG format file will install in the storage device by the camera.
This is not the case when the user initiates the format operation using a Personal Computer machine.
Usually the creation of the catalog files is in a series of increments. These are based on the last data stored by the camera unit in its storage card.
Other canon file formats are CIFF, CRW and CR2.


File type: Comma Separated Values


What is

Comma Separated Values Files by default use the CSV file extension for proper identification. Under this format, every line is represented by new rows with values organized by cells either in a database or spreadsheet application.

This file format uses a comma as a delimiter for information contained in the file which can be exported into supporting programs. If necessary, the comma is also enclosed in quotes.

Once the data is imported from a supporting application like for example Microsoft Excel, it can then be exported to whatever format is required or supported by the host application. When importing the data, it normally follows the formatting of the spreadsheet or database application that will host the information.

This format file represents one of the more standard ways of transferring data to and from a spreadsheet software.

The CSV file extension was derived from the CSL (Comma Separated List) format which dates back to the earliest appearance of Personal Computers in the IT industry.

This was widely deployed in earlier pre-IBM PC units for use with tape storage backups along with interchange database information between machines with varying architectures.


Detailed information 

Category: Data Files
File format: Open-Source
Open with Windows: Microsoft Excel, Database Programs, standard Text Editors
Open with Linux: Microsoft Excel with CrossOver, standard Text Editors
The format applied by this technology allowed small businesses during those times to address the unavailability of affordable drives and rely mostly on floppy disk based applications for their computing. The implementation of the CSV file extension can be diverse; thereby creating interoperability problems.
In October 2005, the RFC 4180 defined the specifications to be used for text/csv in relation to Internet communication. Fielded Text also employs industry standards covering the .CSV file extension.
Despite the various usage, the basic rules covering the CSV format files include the use of comma to represent a new value and double quote enclosure for using special characters or empty strings.
These rules also do not use special character encoding, line terminator, or byte order formats. The main terminator used for each line is the line feed or carriage return with additional functional support for embedded line breaks. In most cases, the comma represents the delimiting character except in localities wherein the comma is utilized for a decimal point. In this context, the semicolon serves as the data delimiter.

  • File type: Configuration
  • Category: Settings Files
  • File format: Open Source

Problems opening CFG files?  We will see what is a ✅.CFG file extension and how to open, view, install, read, edit and covert this file format with specific programs.


What is a .CFG file extension

The CFG file extension is the format for store configuration files. The files with the .cfg are created to change program settings. You should not modify it in any way.

These files are for various computer applications, Operating Systems and processes for definition of initial settings. Any computer program can use files in the .cfg. But the location can give the user information as to what program uses it.

Usually, files with the .cfg file extension are line based. Which means that it only contains one line for every setting. It does not have any strong conventions or set standards. They can also be in ASCII. You can view them using any basic text editor.

Any file that ends with CFG is a file containing configuration settings that are used on a computer. The file has a plain text format. This means it is possible to use a free plain text. Consequently, it is possible to use a plain text editor. You can also get the text editor for free.

A good example of a free text editor is the Windows Notepad that is already on your computer.

You can use the Notepad to edit, open and save the file in the CFG format. Each of the CFG files contains its personal settings for a Windows program. Also, you can store and open the .cfg file without the involvement of third-party software.

Types of .CFG files

The .cfg file extension has seven different types of files. See below:

  • LightWave Configuration
  • Celestia Configuration File
  • Wesnoth Markup language File
  • Cal3D Model Configuration File
  • Citrix Server Connection File
  • MAME Configuration File
  • Configuration File

Celestia Development Team developed the file. And it is a Settings File type.

It is in the Text format. The .cfg file is a 3D universe simulation program. After being saved as a plain text, the file will specify the data files to be loaded when you start the program.

The end user can also edit the program. But should be carried out carefully. Any form of improper change to this file can bring about a failure in the loading process.

Cal3D Model Configuration File is an open source character animation toolkit. It is a three-dimensional model configuration file and used by Cal3D. The file is also in the Text format and contains several references to model components.

It is also  for combining all model components together. The file contains several references to Cal3D files, like .xsf and .csf extensions, as well as animation files. It also contains meshes and materials files. The .cfg file can store the root directory for the model scale and referenced files.

The MAME Configuration File is a settings file and comes in the XML format. The file is in arcade video game emulators and also contains hotkeys and keyboard mapping in playing games.

It is equally used in the configuration of keyboard controls depending on the preferences of the player. You can save different .cfg files for different games.

It gives the game players the ability to easily customize game controls separately based on the game that is currently being played. The file can be accessed both on Windows and Mac operating system.

The configuration file is also another Settings File and comes in the text format. The file is called .cfg file association 4 and is a generic preference file capable of storing configurations and settings information.

It is also used by many programs, which translates to the fact that various .cfg files can store data in various formats. It is not advisable to open .cfg files manually. However,you can view them using a text editor if you save it in the text format.

.cfg files based on text formatting usually contain one value and variable per line in different formats.

The program can also generate a default .cfg file automatically and this can be tested by moving the configuration file away from the default directory anytime the program is not currently running.

Afterward, you can open the program to examine the directory for any newly created .cfg file. You can delete or move a .cfg file to revert to the default settings of the program.

In the case of Linux configuration, the .conf extension is better than the .cfg extension. This type of .cfg file can also be opened using various programs in Windows and Mac Operating Systems.

The Citrix Server Connection File is a Settings File from Citrix Systems. The file contains the required connection information needed to connect the Citrix server. It may also include a password, username, server port, IP address, hostname and so on.

Citrix client software may use multiple .cfg files for connecting to various servers. You can open This file  various Linux, Mac, and Windows programs.

The Battle for Wesnoth developed the Wesnoth Markup Language File. They are game files and comes in the Text format. The file is a turn-based strategy game file for Linux, Windows, and Mac.

It is also available for free. The source code of the file is in the Wesnoth Markup Language (WML). The file is a proprietary language especially for the creation of units, campaigns, scenarios and other contents of the game, The Battle for Wesnoth.

You can use a text editor to edit CFG files. Some WML plugins that highlight syntax have also been developed for various text editors, Vi and Emacs, for example.

Newtek developed LightWave Configuration File . It is a Settings File. A preference file for rendering and modeling applications for all animation and frames sequences.

It equally used in saving different categories of application configuration options, as well as, to remember presets for the end user.

Celestial configuration files can contain references to several data files like .txf, font definition, .cel scripts, .dsc data files, .ssc and .stc.


How to Open CFG Files 

The following software include editors, viewers, readers, installers and file openers. These programs will help you opening a CFG file.

Software to Open with Windows:
  • Citrix Access Client,
  • Pro/Engineer,
  • Proxomitron,
  • Celestia
  • Notepad
  • Microsoft Word
Software to Open with Linux:
  • Citrix Access Client, Celestia
Software to Open With MAC:
  • Celestia
These files contain configuration and settings information for a variety of programs. The user must not attempt to open it manually.
If the user wants to go back to using default settings for the program. He can move or delete it.


  1. Click on the "Start" button on your desktop. Then type the name of the .cfg file that you want to open in the search text box and then press "Enter."
  2. Now right-click on the .cfg file that i your result windows displays.
  3. Then click on "Open With" that you can find in the popup menu.
  4. Next, click on "Notepad" in your pop up window list of programs.
  5. Next, view the .cfg file and then edit the configuration any way you want. The specific type of modification you make in the .cfg file can be determined by the particular program that is using the .cfg file.
  6. Afterward, press the S and CTRL keys together and this will save the file in your computer.
  7. The system will save the file in any location you choose on your computer in the .cfg file format for as long as you want.

You can open .cfg files in both Windows and Mac operating systems, as well as Linux using various programs, some of which are free to use.

How to make a Config file

A program can generate a file with the CFG format. To check if the program can generate a default CFG file, the configuration file can be moved out of the default directory, provided that the program is not running.
The default directory can be checked if a new file with the CFG file extension has been created in it.


Problems opening a .cfg file?

Ensure you have the last version of the recommended software installed. If not, download the last version.

Depending on what you are doing, you will need a viewer, editor, reader, installer or file opener.

Ensure that your cfg file is not corrupted. If needed, download it again.

1 Star2 Stars3 Stars4 Stars5 Stars (2 votes, average: 5.00 out of 5)