Free Mac Cleaner Download: How to Install MacDiskCleaner Safely

You can download MacDiskCleaner straight from this site — no email sign-up, no trial countdown. Here’s what you get and how to install it properly.

What’s included free

• A full scan of your Mac (or the folders you choose): junk and caches, duplicates, large and old files, old downloads, developer data and app leftovers.
• Every result visible — nothing hidden behind a paywall.
• Up to 2 GB of cleanup in total, for free, permanently.
• Trash-first deletion, so anything you remove can be put back.

Pro ($12.99 once) removes the 2 GB limit and adds an app uninstaller, privacy cleaner, startup manager and scheduled scans. Compare free and Pro.

System requirements

• macOS 14 Sonoma or later
• Apple Silicon (M1 or newer) or Intel processor
• About 50 MB of free space

Option 1: Install with no warning (Terminal)

Open Terminal (Applications → Utilities), paste this line and press Return:

curl -fsSL https://www.macdiskcleaner.com/install.sh | bash

It downloads the latest version, checks its published SHA-256 checksum, installs it in Applications and opens it. You can read the script before running it.

Option 2: Download the .dmg

1. Click Download on the downloads page and open MacDiskCleaner.dmg.
2. Drag MacDiskCleaner into the Applications folder.
3. Open it from Applications. macOS shows “Apple could not verify…” — click Done (never Move to Bin).
4. Open System Settings → Privacy & Security, scroll down and click Open Anyway next to MacDiskCleaner, then confirm with your password.

That check only happens once. On macOS 14 Sonoma you can instead right-click the app and choose Open.

Is it safe to download Mac cleaners?

It is when you get them from the developer’s own site and they behave transparently. MacDiskCleaner:

• Never uploads file names, paths or contents — scanning is local.
• Moves everything to the Trash instead of erasing it.
• Blocks protected locations such as system folders, Keychains and Preferences.
• Publishes a SHA-256 checksum for every release on the safety page.

Avoid third-party download sites that wrap apps in their own installers.

After installing

Run your first scan from the Dashboard. You can choose a quick scan (without the slower duplicate check) or a full one, and pick which folders to include. Results are saved, so you don’t have to scan again after reopening the app.