What is a CIF file?
A .CIF file is typically a Crystallographic Information File created by the International Union of Crystallography. It stores scientific 3D structural data about crystals. However, a .CIF file has multiple possible meanings. It can also be an Easy CD Creator Disk Image developed by Corel, a Catalog Interchange Format file for SAP Ariba, or an integrated circuit layout file based on the Caltech Intermediate Form standard.
How to open CIF files?
Because a .CIF file can store very different types of data, we recommend using viewer.online/cif to identify the actual format of your file. viewer.online/cif can analyze .CIF files to identify the exact format and creator software, inspect the file structure, extract readable text, and check whether an online preview is available.
If you know your file is a crystallographic format, you can open it with specific scientific software such as Olex2, Mercury Crystal Structure Visualisation System, or FullProf. If it is a catalog file for the Ariba Network, you can open it with any standard text editor. For an Easy CD Creator Disk Image, you will need virtual drive software to mount the file contents.
Best practices and file conversion
If you need to share your files with other users, we recommend file conversion to sensible target formats on convert.guru. You can convert a crystallographic .CIF file into a .PDB (Protein Data Bank) or .XYZ file. If you have a disk image, convert it into a standard .ISO file for better compatibility.
Summary
viewer.online/cif is useful for identifying, inspecting, and understanding .CIF files without installing software or dealing with compatibility problems.