I see from issue #25 (pubpeer.com/extensions links to https://apps.apple.com/us/app/pubpeer/id1489865828?ls=1&mt=12 ) that there was a Safari plugin. I see from https://evilmartians.com/chronicles/how-to-quickly-and-weightlessly-convert-chrome-extensions-to-safari that "With version 12, XCode introduced the Safari Web Extension Converter which gives us the ability to convert Chrome extensions to Safari extensions" "quickly and weightlessly."
I am skeptical it makes it easy but thought it was worth mentioning.
I see from issue #25 (pubpeer.com/extensions links to https://apps.apple.com/us/app/pubpeer/id1489865828?ls=1&mt=12 ) that there was a Safari plugin. I see from https://evilmartians.com/chronicles/how-to-quickly-and-weightlessly-convert-chrome-extensions-to-safari that "With version 12, XCode introduced the Safari Web Extension Converter which gives us the ability to convert Chrome extensions to Safari extensions" "quickly and weightlessly."
I am skeptical it makes it easy but thought it was worth mentioning.