TidyMacThe Mac storage library
Every part of your Mac’s hidden storage, explained the same way: what it is, why it’s big, whether it’s safe to remove, what happens after, and whether it comes back. Written by the team behind TidyMac, from the same library the app uses.
Time Machine local snapshots on MacLocal snapshots are hourly restore points Time Machine keeps on your Mac’s own drive. Here’s how big they get, how to li…Safe to thiniPhone and iPad backups on MacFinder keeps full copies of every iPhone and iPad you backed up to your Mac. Find them, see which device each belongs to…Check firstApp caches on Mac (~/Library/Caches)App caches are temporary copies apps rebuild on their own. Here’s what’s safe to clear, which apps to close first, and w…SafeXcode DerivedDataDerivedData holds Xcode build files for every project you have ever built. It’s safe to delete and rebuilt automatically…SafeLocal AI models on MacEach local AI model is 4 to 40 GB. See where Ollama, LM Studio and Hugging Face store models on a Mac, and how to remove…Your choiceOld installers on MacAfter an app is installed, its .dmg or .pkg installer is no longer needed. Here’s how to find old installers, including …SafeXcode iOS DeviceSupportXcode copies files from every iOS and watchOS version you connect for testing, and never removes old ones. They’re safe …SafeXcode simulators (CoreSimulator) using too much spaceOld iOS simulators pile up in ~/Library/Developer/CoreSimulator after every Xcode update. Remove the unusable ones with …Check firstDeveloper package caches on MacPackage managers keep every version you ever downloaded. Here are the cache locations and the right cleanup command for …SafeLog files on Mac (~/Library/Logs)Apps write diary-style log files so problems can be investigated. They’re safe to delete unless a support team asked for…SafeApple Mail “Mail Downloads” folderEvery attachment you open in Apple Mail is copied into a hidden Mail Downloads folder and kept. The originals stay in yo…SafeMessages attachments on MacMessages keeps every photo, video and file forever. Deleting the attachment files directly breaks conversations. Here’s …Leave aloneDocker.raw on MacDocker Desktop keeps every container and image in one virtual disk file. Deleting it erases everything. Here’s how to sh…Leave aloneHow much storage Apple Intelligence uses on a Mac (and can you remove it?)Apple Intelligence models are part of the system on macOS 27. Here’s roughly how much space they take, why you can’t del…InfoApplication Support, Containers and Group ContainersApps keep settings, offline data and caches in Application Support and Containers. Find which app owns each big folder a…InfoHidden dot-folders in your Mac home folder.cache, .npm, .gradle, .cargo and friends are created by developer and AI tools. Here’s what each one is and how to shri…InfoWhat is “System Data” on a Mac, and why is it so big?System Data is macOS’s catch-all for everything it doesn’t sort into Apps, Documents or Photos: snapshots, caches, backu…Info
See what’s filling your Mac.
Free scan in about 20 seconds. Every gigabyte explained. Nothing removed until you say so.