Where the video goes
Downloads land in Finder › Downloads, named after the creator and the video. The MP4 opens in QuickTime Player, previews with Quick Look (select it and press the space bar), and imports straight into iMovie or Final Cut Pro.
From Mac to iPhone
Select the MP4 in Finder, choose Share › AirDrop and pick your iPhone; the video lands in Photos. If you save TikToks on your iPhone more often than on your Mac, the PocketTok app does it there directly, from TikTok's share menu.
Slideshows on Mac
Paste the link of a TikTok photo post and every photo appears. Download one, or click Download all. More on the TikTok slideshow downloader page.

