TIFF Extension Plug-in for BigTIFF and Composite Halftones in Photoshop

Supported Versions: Windows 32/64 bit Photoshop versions: 6 / CC2022

Updated September 28, 2024: ExtraTiff Photoshop Plugin

The Free ExtraTiff Windows 32-bit Photoshop-compatible plugin and ExtraTiff Windows 64-bit Photoshop-compatible plugin extend Photoshop's capability to include composite 1, 2, and 4 bit/pixel, CMYK+Spots/Alphas, PhotoInk, Hex, and CMYKOGV TIFF formats, commonly used for halftoning in the Graphic Arts industry. v9.44 and later include support for selecting an image from TIFFs with multiple IFDs.

The plugins are compatible with all 32/64-bit Windows Photoshop versions from 6.0 to CC2022. Note that the Win32 version cannot support BigTIFF formats larger than approximately 3 billion pixels x colors.

Sorry, there are no plans to port a Macintosh version in the foreseeable future.

Installation Instructions:
Download the plugin .ZIP file, extract ExtraTiff.8bi, and add it to the Photoshop plugin folder, typically :

C:\Program Files\Adobe\Adobe Photoshop CS\Plug-Ins\File Formats
C:\Program Files (x86)\Adobe\Adobe Photoshop CS\Plug-Ins\File Formats

To check the correct path, right-click Photoshop in the Start menu, select "Properties", and look for the "Start In" path.

Acknowledgements

Thanks to the following contributors who provided the free source files used in this plugin:

Thomas Knoll, Adobe Systems Incorporated, SunSoft, Inc., The International Color Consortium, Heidelberger Druckmaschinen AG, Thomas G. Lane, Independent JPEG Group, Sam Leffler, Greg Ward Larson, Frank D. Cringle, Silicon Graphics, Inc., James A. Woods, Spencer Thomas, Joseph Orost, University of California, Berkeley, Mark Adler, Jean-loup Gailly, Aware Systems, BigTIFF.org