1 of 2
guoc
  • 101
  • 1

macOS Sierra introduced new PDFKit framework. The apps which are based on PDFKit are not support text services (the services which are only available when text is selected).

Preview, Skim, Safari's built-in PDF viewer and Chrome's built-in PDF viewer all are not support text services.

Firefox's built-in PDF viewer supports, but you need access the service from menu bar (Firefox -> Services) after selecting some text.

guoc
  • 101
  • 1