Opening a CSK File

The CSK file type is primarily associated with ChemSketch.

CSK	File extension: CSK
	File type:	chemical sketch file

What is a CSK file

CSK files mostly belong to ChemSketch. CSK files are Chemical Sketch Files created by the ChemSketch application. They store data for drawing chemical structures including atoms, bonds, and connection details.
This format captures both the visual layout and the molecular connectivity, which helps in 2D and potential 3D representations.
Useful points include:

They contain vector-based chemical diagrams.

They record structural details for research and documentation.

They can be opened and edited with ChemSketch software.

FilExt.com note: More details are available at ACD Labs website.

How do you open CSK files?

You need a suitable software like ChemSketch to open a CSK file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your CSK file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a CSK file directly in the browser:. Just drag the file onto this browser window and drop it.

Online CSK Text Viewer

Choose your .csk file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert CSK files:

ChemSketch
See the previous paragraphs to learn more about the main application. CSK files are often referred to as ChemSketch data files because this type of file is primarily created or used by this software.
Claris Works
Copernic 2001 (Skin) by Copernic
The Mime types used with this association are: application/copernic-csk.
StoryWeaver (Template) by Storymind Store
Default is CARDS.CSK.

Technical Data for CSK File Extension

File classification:

Data

Related files:

mol, sdf, cdx, cdxml, cml, chk, cks, csv, cpk, rpa, fpt, xsl, upr

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: cskfile, FileType: Copernic Skin, AppName: Copernic
EXEFile: Copernic.exe

ProgramID: Cliprex Skin File
EXEFile: %ProgramFiles%\Cliprex DVD Player Professional\cdivx.exe %L

ProgramID: cskfile
EXEFile: Copernic.exe %1

ProgramID: cskfile
EXEFile: %ProgramFiles%\Copernic 2000\Copernic.exe %1

ProgramID: cskfile
EXEFile: %ProgramFiles%\Copernic 2001 Basic\Copernic.exe %1

Show all 5 listings To Top

a csk chemical sketch file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with CSK files

Associate the CSK file extension with the correct application.
Update your software that should actually open chemical sketch files. Because only the current version supports the latest CSK file format. Search, therefore, e.g. on the manufacturer website after an available ChemSketch update.
To make sure that your CSK file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .CSK file online - secure, fast, and no downloads needed.