How to exclude folders and files from these services, with new problems apparent in macOS Tahoe over exclusions from Time Machine backups.
QuickLook
Why can’t some files be seen in thumbnails, or previews, but almost everything else can be seen thanks to QuickLook? And is this connected to Spotlight indexing?
The Preview pane in Finder windows can show a comprehensive list of metadata, or a shortened list you can customise in Preview Options. Here’s how to use it and how it can provide further information.
For the last 10 years, macOS has relied on Uniform Type Identifiers to recognise different types of files, for opening in apps, QuickLook, Spotlight and in other features.
Two confounding factors to take into account when interpreting timestamps on files: what updates the Last opened time, and access via QuickLook.
How to discover which apps were launched, which appexes were run, and life cycle events for executable bundles, and map waypoints and events in the log.
Since 2007, Quick Look has provided us with faithful thumbnails and previews of images. Then in 2020 their corners were cropped, and that’s not getting any better with macOS 26 Tahoe.
From the start of the fourth cycle in M4 Macs and the smallest ever, through the omission in macOS VMs, and QuickLook shortcomings, to the stealth firmware update.
How to discover which QuickLook generator or app extension should be creating Thumbnails or Previews for different file types, using this new version of Mints.
From the original Desktop databases linking files to distinctive icons, to the sophistication of QuickLook, how display of thumbnails for files has changed in Mac OS.
The Eclectic Light Company 