The free Skim application can open .eps files and display them. You can then save it as PDF. I just did this on Sequoia v15.0 with the Finder right-click Open With menu.
Apple has removed all of the frameworks capable of converting or displaying .eps files so unless an application developer pays for a third-party PDF library that supports .eps conversion, the functionality won't be possible on macOS Ventura or later.
Once you have Skim installed into your Applications folder, you can run the following AppleScript which will prompt for only .ps or .eps files and instantly tell Skim to save them as PDF in their original location.
Open the following in Apple's Script Editor, click the compile (hammer icon), and then run.
--skim_eps_to_pdf
-- select a Postscript or encapsulated postscript file and have Skim
-- convert it in the same location as a PDF.
use scripting additions
set theEPS to (choose file of type {"ps", "eps"}) as text
tell application "Finder"
set ext to name extension of alias theEPS
end tell
if ext is "eps" then
set thePDF to (text 1 thru ((offset of ".eps" in theEPS) - 1) of theEPS) & ".pdf"
else if ext is "ps" then
set thePDF to (text 1 thru ((offset of ".ps" in theEPS) - 1) of theEPS) & ".pdf"
end if
tell application "Skim"
activate
set myeps to open alias theEPS
save myeps in thePDF
close myeps saving no
end tell
return
Tested: macOS Sequoia v15.0 with Skim v1.7.4
