Richard Koch

Mathematics Department

University of Oregon


TeXShop is a Tex previewer for Mac OS X. For more information, click on Ghostscript 10.05.1 was released on April 29, 2025. An install package is provided below. The package has universal Intel and Arm binaries and works on macOS Catalina and above. An associated install package for Ghostscript-10.05.1-Extras, containing the Ghostscript Library and muTool 1.25.6, is also provided. These extra items are required by only one program in TeX Live, dvisvgm. In case of trouble, revert to Ghostscript 10.05.0. Ghostscript 10.05.0 was released on March12, 2025. An install package is provided below. The package has universal Intel and Arm binaries and works on macOS Catalina and above. An associated install package for Ghostscript-10.05.0-Extras, containing the Ghostscript Library and muTool 1.25.4, is also provided. These extra items are required by only one program in TeX Live, dvisvgm. In case of trouble, revert to Ghostscript 10.04.0. Note that Ghostscript 10.05.0 no longer supports Mojave, macOS 10.14. It is likely that the full MacTeX package in 2026 will also drop support for Mojave.

Ghostscript 10.04.0 was released on Sept 18, 2024. An install package is provided below. The package has universal Intel and Arm binaries and works on macOS Mojave and above. An associated install package for Ghostscript-10.04.0-Extras, containing the Ghostscript Library and muTool 1.24.9, is also provided below. These extra items are required by only one program in TeX Live, dvisvgm. In case of trouble, revert to Ghostscript 10.03.0.

(Originally, dvisvgm also required X11. This requirement was removed on January 24, 2025 and dvisvgm will work with the two packages below regardless of whether X11 is installed.)

Ghostscript 10.03.0 was released on March 7, 2024. An install package is provided below. The package has universal Intel and Arm binaries and works on macOS Mojave and above. The associated install package for Ghostscript-10.03.0-Extras, containing the Ghostscript Library and muTool 1.23.11, is also provided below. Ghostscript 9.50 was released October 15, 2019. Below is a signed and notarized Macintosh install package for this version of Ghostscript. The package works on macOS High Sierra and above, for Intel. The version of the package linked below was released on December 22, 2019; the new version has a Custom mode which can also install the ghostscript library libgs.dylib in /usr/local/lib. This library is required by dvisvgm to enable certain operations, but most users will not need to install it. The Hint Project is a typesetting project by Martin Ruckert, described on the web page https://hint.userweb.mwn.de. The command line typesetting programs hitex and hilatex from this project are in TeX Live. They convert TeX and LaTeX source files to "hint files" rather than "pdf files"; hint files contain information needed to reflow the text if the user resizes the view or magnifies the text. Ruckert wrote hint file viewers for various operating systems; his viewer for macos is in the MacTeX install package. That viewer is also available below, together with a README file with more information about the project. The viewer below has been updated to also support HINT Format Version 2.1, with added support for color. The hitex program in TeX Live 2025 will have this added support when TeX Live 2025 is released later in 2025.

Minimal TeX is a very small distribution of TeX for the Macintosh. It only contains engines for Plain TeX and variants of Plain TeX, but nothing about LaTeX. It is based on the TeX Live "minimal scheme". Here are install packages for the 2024 and 2025 versions of the distribution. The link below downloads a "LocalTeX" preference pane. This pane allows a user to select the active TeX distribution, and overrides the choice made for all users by TeX Live Utility. It also allows users to install TeX in their home directory and to select distributions installed on a thumb drive or external hard disk. It does not modify any data used by the TeX Dist pane and works on High Sierra and above. The download includes the LocalTeX pane, documentation, and full source code, but a glitch in Apple's notification system forces users to compile the pane using the included source and XCode. A TeXShop user asked me to add the extensions lmt, mkiv, mkvi, mkxl, mklx, and tuc to TeXShop because ConTeXt can create files with these extensions and the user would like to examine these files using Quick Look. I was reluctant to add so many extensions to TeXShop for this very special purpose. So instead I wrote a small program named "Helper" which defined these extensions. Installing that program causes Quick Look to display files with these extensions. Helper contains a primitive editor, so clicking on a file with one of these extensions opens the file in Helper. The Helper program and its source are available below, so users with a similar problem can extend Helper to deal with additional extensions. I don't expect this to happen often! The link below is for what we hope are very rare users, who have Arm machines but are running TeX Live 2020. It is an install package which reaches into the TeX Live 2020 binary directory and replaces each x86-64 binary with a universal binary with both x86-64 and arm code. The binaries are still in /usr/local/texlive/2020/bin/x86_64-darwin because the distribution was designed to look for binaries there. We strongly recommend that Arm owners upgrade to a later TeX Live, since these support Arm and Intel on an equal footing.

Below are longer articles about topics which interest me: Below are the slides from a talk given at Humboldt State University in 2015 Notes from a lecture at Bend: You may also want to access:

Richard Koch
2740 Washington St
Eugene OR 97405

Phone: (541)686-8466
Email: < koch@uoregon.edu >