Combine PDFs in Preview on Mac — Apple Support (NZ) In the Preview app on your Mac, open the PDFs you want to merge. · In each open PDF, choose View > Thumbnail Details to see the thumbnails in the rightmost column. Combine PDFs in Preview on Mac — Apple Support (NZ) In the Preview app on your Mac, open the PDFs you want to combine. · In each open PDF, choose View > Thumbnail Details to see the thumbnails in the rightmost column. · While in Preview, go to the “View > Pages > Thumbnail Details” tab of the document in Preview. Combine PDFs in Preview on Mac — Apple Support (NZ) In the Preview app on your Mac, open the PDFs you want to combine. · In each open PDF, choose View > Thumbnail Details to see the thumbnails in the rightmost column, in both the open PDF and the opened one. · Press and hold Command and Shift at the same time, to open the Preview app. Combine PDFs in Preview on Mac — Apple Support (NZ) In the Preview app on your Mac, open the PDFs you want to combine. · In each open PDF, choose View > Thumbnail Details to see the thumbnails in the rightmost column, in both the open PDF and the opened one. · Press the Command + Shift keys together while the preview is open, to combine the first PDF file. Combine PDFs in Preview on Mac — Apple Support (NZ) In the Preview app on your Mac, open the PDFs you want to combine. · In each open PDF, choose View > Thumbnails to show the page thumbnails in the sidebar. Combine PDFs in Preview on Mac — Apple Support (NZ) In the Preview app on your Mac, open the PDFs you want to combine. · In each open PDF, choose View > Thumbnails to show the page thumbnails in the sidebar. · Press the Command + Shift keys together while the preview is open, to combine the first PDF file. Combine PDFs in Preview on Mac — Apple Support (NZ) In the Preview app on your Mac, open the PDFs you want to combine.