com.flyingmeat.Acorn8.QLThumbnail
A sandbox container used by Acorn8’s Quick Look thumbnail helper to store its isolated app data on your Mac.
What is com.flyingmeat.Acorn8.QLThumbnail?
This folder is a macOS sandbox container for the Quick Look thumbnail component associated with Acorn8. Quick Look helpers let Finder generate previews or thumbnails for supported files, so you may encounter this item when browsing Acorn-related image documents in Finder. Container folders typically hold sandboxed settings and small working data used by that helper.
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Safety overview
Status: Mostly safe
This item is generally tied to Acorn8 functionality rather than the core system. Removing it is unlikely to harm macOS, but it may reset helper-specific data or temporarily affect Finder thumbnail or preview behavior for Acorn8-supported files until the app recreates the container.
Recommendation: Keep this if you use Acorn8 or want Finder previews and thumbnails for its supported files to work normally. If Acorn8 has been removed and you no longer need its Quick Look integration, this container is usually optional and may be removed, though it may return if the app or its helper is reinstalled.
File path
~/Library/Containers/com.flyingmeat.Acorn8.QLThumbnail
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