How to uninstall LosslessCut on Mac

LosslessCut never keeps your videos inside itself: exported cuts and its .llc project files go next to the source file unless you chose another output folder, and removing the app leaves all of them alone. What the app keeps is small, its settings, keyboard shortcuts, logs and temporary files in ~/Library/Application Support/LosslessCut. These steps cover LosslessCut downloaded from its GitHub releases and the Homebrew cask losslesscut; the Mac App Store version keeps the same folder inside its sandbox container.

Keep your settings if you plan to reinstall

LosslessCut's installation page says settings and keyboard shortcuts live in config.json inside that folder. To carry custom shortcuts over to a reinstall, quit LosslessCut and copy ~/Library/Application Support/LosslessCut/config.json somewhere safe.

Quit LosslessCut and remove the app

  1. Quit LosslessCut from its application menu, then search Activity Monitor for LosslessCut and check that its helper processes have exited.
  2. Move LosslessCut from the Applications folder to the Trash. The installation page describes uninstalling as deleting the app you installed.
  3. If you also want to remove settings, logs and caches, move the support folder below to the Trash.

Where LosslessCut keeps its data

Location What it holds What to do
~/Library/Application Support/LosslessCut Settings (config.json), shortcuts, logs and temporary cache files Remove it once you do not need your settings
~/Library/Containers/no.mifi.losslesscut The same data for the Mac App Store version Only exists for the App Store version
.llc files next to your videos Segments of each file you opened, so you can continue where you left off They belong with your media; keep or delete them per project

The first two paths come from LosslessCut's documentation. The LosslessCut FAQ explains the .llc files and says you can turn them off in the app's settings.

Check the result

Run these read-only commands in Terminal. The last one searches your Movies folder; replace ~/Movies with the folder where you edit videos.

pgrep -lf LosslessCut.app
ls -d "$HOME/Library/Application Support/LosslessCut"
find ~/Movies -maxdepth 3 -name "*.llc"
  • No output from pgrep means no process is running from LosslessCut.app.
  • ls -d printing the path means the settings folder is still there. "No such file or directory" means it is gone.
  • find lists any .llc project files it finds. No output means none sit within three folder levels of that location. These files are yours to keep or remove; LosslessCut and Mole do not manage them.

If you installed it with Homebrew

Mole skips --zap when its list reaches unchecked or shared data, or cannot be fully checked, and still cleans the leftovers you selected.

The losslesscut cask's zap list has ~/Library/Application Support/LosslessCut and ~/Library/Logs/LosslessCut. Running brew uninstall --cask --zap losslesscut yourself moves both to the Trash, whatever you ticked in Mole; your videos and .llc files are not in the list. The same FAQ notes that LosslessCut's developer does not maintain package-manager builds such as Homebrew's. To keep your settings, remove only the app:

brew uninstall --cask losslesscut

What Mole lists

This is how Mole handles LosslessCut installed from the official download:

  • ~/Library/Application Support/LosslessCut is listed but not selected. The rebuildable caches inside it, Cache, Code Cache, GPUCache, DawnGraphiteCache, DawnWebGPUCache and blob_storage, are separate rows selected by default.
  • The no.mifi.losslesscut-mac preferences file, the app's recent-documents list and its temporary cache folders are selected by default.
  • Your videos, exported files and .llc project files are not listed.

What this test covered

On September 26, 2026, LosslessCut 3.69.0 was installed from the official package Homebrew's cask points to, checked against its checksum and copied into Applications, launched once without opening a video, and uninstalled with a development build of Mole with every listed row ticked, including the ones Mole leaves unchecked. Mole's Status page showed LosslessCut as one row with eight processes. The app (382 MB), the 2 MB support folder with its caches, the preferences and the temporary caches, 12 items in all, went to the Trash, and none of them was still on disk afterwards. No login item or launch agent appeared. No video was cut, so no .llc file existed, and neither the Mac App Store version nor the Homebrew cask was tested. An earlier test on September 21, 2026 removed the app, its support folder and its preferences the same way.