CSK Converter

Extract text from CSK files

Select File
Drop or upload your .CSK file

Online File Converter

✈

How to extract text from your CSK file

Click the "Select File" button above, and choose your CSK file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.

Convert CSK to another file type

To convert your CSK file to another format, you need ACD/ChemSketch or other Vector Image software.

Convert a file to CSK

To convert other file formats to the "Chemical Informatics File" file type, you need software like ACD/ChemSketch or a similar tool.

About CSK files

A .csk file is primarily associated with legacy versions of ACD/ChemSketch, a molecular modeling and drawing application. These files contain 2D or 3D chemical structures, reactions, and schematic diagrams used in organic chemistry and pharmaceutical research.

The Problem: The .csk format is an older, proprietary container often replaced by the modern SK2 format. Users commonly encounter problems because standard image viewers and web browsers cannot display these files, and opening them requires installing the specific (and often paid or registration-locked) ACD/Labs software suite.

Real-World Confusion: It is critical to note that .csk is also a legacy extension for ClarisWorks/AppleWorks 'Scrapbook' data. If your file is not related to chemistry, it is likely an obsolete Apple document that requires specialized emulation tools to retrieve.

The Solution:

For Publishing & Web: Convert .csk to PDF or vector formats like SVG to ensure the chemical structures remain scalable and crisp in papers.
For Data Interoperability: Convert to MOL (MDL Molfile) or SMI (SMILES) to use the data in other cheminformatics tools like ChemDraw or GastroPlus.

Convert.Guru analyzes your CSK file, detects the exact format, and lets you read the text inside.

Users also converted PDF, PDE, INO and IDE files.

FAQ

If you want to convert CSK file to CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT, DB or SQL, you can use ACD/ChemSketch or similar software from the "Chemical Structure Drawing" category. In the File menu, look for Save As… or Export….

To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to CSK, try ACD/ChemSketch or another comparable tool in the "Chemical Structure Drawing" category.

The CSK Converter Story

The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our CSK converter.