Need App to open .ps

If you want to view .eps or .ps via QuickLook, try EPSView by Etresoft. Copy the app to Applications folder and run it once so it registers its internal QuickLook plugin. You can quit it and it doesn’t need to run again.

https://twitter.com/etresoft/status/1512170659861909510

Skim will open .ps files and it's free.

https://sourceforge.net/projects/skim-app/

For those with MacTeX 2022 distribution installed, its TexShop v5.10 will open .ps files too. Like Skim, it uses Apple's pstopdf¹ to convert the Postscript to PDF for imaging purposes, but unlike Skim, it changes the open filename in the title bar to .pdf.

¹ man pstopdf

Matti Haveri wrote:

If you want to view .eps or .ps via QuickLook, try EPSView by Etresoft. Copy the app to Applications folder and run it once so it registers its internal QuickLook plugin. You can quit it and it doesn’t need to run again.

https://twitter.com/etresoft/status/1512170659861909510

EPSView only supports EPS files. It does not support PS files.

I did write a new version that opens and previews both, and allows them to be saved to PDF. But it turns out that PS files are quite complicated. Apple's built in API for reading postscript doesn't handle all types of PS files. It can't even open some of the PS files in the Ghostscript distribution. But given that limitation and my inability to come up with any way to monetize it, I decided not to distribute it. Going in a different direction, sorry.

You're welcome.