How to convert HEIC to JPG on MacHow to convert HEIC to JPG on Mac for free: one photo in Preview, many at once with Finder Quick Actions, from Photos, and how to make an iPhone shoot JPEG.
How to clear Gradle cache on MacHow to clear Gradle cache on a Mac: what ./gradlew clean really deletes, how to stop the daemon and empty ~/.gradle/caches, and old Gradle versions.
How to block websites on MacHow to block websites on Mac with Screen Time: limit adult sites, block a list of addresses or allow only chosen sites, and lock it with a passcode.
How to undo on Mac: Command-Z and redoHow to undo on Mac with Command-Z or Edit › Undo, redo with Shift-Command-Z, undo a file move or delete in Finder, and go back to an earlier version.
How to create a folder on MacHow to create a folder on Mac: File › New Folder or Shift-Command-N, a folder on the desktop, New Folder with Selection, and why New Folder is dimmed.
How to open Terminal on Mac and use itHow to open Terminal on Mac with Spotlight or Finder, open it at a folder, run the first safe commands and stop a command with Control-C.
How to empty Trash on MacHow to empty Trash on Mac, delete one item right away, empty it automatically after 30 days and what to do when the Trash won’t empty.
How to update MacHow to update Mac in System Settings › Software Update, what to do before you start, how to turn on automatic updates and update App Store apps.
How to uninstall Python on Mac completelyHow to uninstall Python on a Mac: from python.org, Homebrew or pyenv, what to keep (Apple’s own python3) and how to check it’s gone.
How to record audio on MacHow to record audio on Mac for free with QuickTime Player or Voice Memos, how to choose the microphone, and what to do to record the Mac’s own sound.
How to downgrade macOSHow to downgrade macOS to an earlier version: get the installer, make a bootable USB drive, erase the Mac, install and restore your files.
Mac keyboard shortcuts: the most useful onesThe Mac keyboard shortcuts worth knowing: copy and paste, windows, screenshots, Finder, text, lock screen, plus what ⌘ ⌥ ⌃ ⇧ mean and their Windows keys.
Mac maintenance: how to keep your Mac clean automaticallyMac maintenance made simple: what a Mac really needs, and how to clean it automatically on a schedule with MacWashing’s auto-clean.
How to delete Ollama models on MacHow to delete Ollama models on a Mac with ollama rm, see which models take space, stop a running model and find where models are stored.
How to clear media cache in Premiere Pro on MacClear media cache in Premiere Pro on a Mac from Settings › Media Cache, turn on automatic cleanup and find the Adobe cache folder.
How to change default browser on MacHow to change default browser on Mac in System Settings or from the browser itself, how to switch back to Safari, and where the default email app is set.
How to clear Telegram cache on MacHow to clear Telegram cache on a Mac in Telegram and Telegram Desktop, and how to limit it. Your chats stay in the cloud.
flutter clean: how to clear Flutter cache on MacWhat flutter clean deletes, how to clear Flutter cache on a Mac with dart pub cache clean, and where the Android and iOS parts keep their caches.
How to clear Teams cache on MacClear the Microsoft Teams cache on a Mac the way Microsoft documents it: quit Teams, delete two folders, restart. When it helps and what stays.
How to print screen on MacHow to print screen on Mac without a Print Screen key: Shift-Command-3, 4 and 5, where screenshots are saved and how to copy one to the clipboard.
How to change Mac nameHow to change Mac name in System Settings › General › About, how to change the local hostname, and where other devices see the name of your Mac.
How to scan documents on MacHow to scan documents on Mac with your iPhone (Continuity Camera), into Notes, or with a scanner in System Settings and Image Capture. Free, built in.
How to show hidden files on MacHow to show hidden files on Mac with Command-Shift-Period in Finder, open the hidden Library folder, list hidden files in Terminal, and what not to touch.
How to flush DNS cache on MacHow to flush DNS on Mac with one Terminal command, clear Chrome’s own DNS cache, and when flushing DNS actually helps.

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