.PCT File Extension

2 file types use the .pct file extension.

Picture File

Developer Apple
2.3  |  24 Votes
NEW: Open your .PCT file online with File Helper.View Online

What is a PCT file?

A PCT file is an image saved in the Macintosh PICT format, which Apple developed in 1984. PCT files can contain vector or raster images. The PCT format has been deprecated, so PCT files are uncommon.

More Information

Screenshot of a .pct file in Adobe Photoshop
PCT file open in Adobe Photoshop

Apple created the PICT format for use with QuickDraw, a 2D graphics library and API used by previous versions of Mac OS. Two versions of the PICT format, PICT 1 and PICT 2, exist. PICT 1 supports up to eight colors. PICT 2 supports 24- and 32-bit color (up to millions of colors).

While the PICT format is a vector format, PICT files can contain embedded raster images. Many PICT files contain only a single embedded raster image and do not contain any vector data.

NOTE: PICT images that use the .pct extension were likely created on a Windows computer. PICT images created on Macs typically use the .PICT extension.

How to open a PCT file

You can open a PCT file with XnViewMP (multiplatform), Adobe Photoshop (Windows, Mac), Netpbm (multiplatform), or IrfanView (Windows).

How to convert a PCT file

You can use XnViewMP, Adobe Photoshop, Netpbm, or IrfanView to convert PCT files to other formats. For example, XnViewMP can convert PCT files to the following formats (and many others):

  • .JPEG - JPEG Image
  • .GIF - Graphical Interchange Format
  • .PNG - Portable Network Graphic
  • .TIFF - Tagged Image
  • .BMP - Bitmap Image
  • .PCX - Paintbrush Bitmap Image
  • .TGA - Targa Graphic
  • .JP2 - JPEG 2000 Core Image
  • .JXR - JPEG XR Image
  • .WEBP - WebP Image

Programs that open PCT files

Pure Compound Text File

Developer N/A
2.0  |  7 Votes

Chemical data file used by ChemSep, an application used to simulate distillation, extraction, and absorption operations; contains component data, such as the name, index, CAS number, formula, structure, T correlations, and molecular values.

More Information

You can import and export the data from or to a PCT file in ChemSep through the PCDmanager. To access the PCDmanager, select Databanks → Pure components data (PCD/PCT), click Edit, and select Import component from file or Export component to file.

NOTE: Data in PCT files is stored in text format, whereas .PCD files store data in binary format.

Programs that open PCT files


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