Mac Optimizer icon
Performance & Maintenance Utility

Mac Optimizer

Free up storage, purge caches, and speed up a sluggish Mac in minutes.

Download Free

— downloads

macOS Mojave & earlier Intel Mac Free
Mac Optimizer screenshot Mac Optimizer screenshot
Warning: some tasks delete files as part of the process (for example, rebuilding caches or resetting the Dock). Read each task's description before running it, and only use "Execute All" once you're comfortable with what every individual task does.

A sluggish Mac, fixed fast

Mac Optimizer bundles the common troubleshooting tasks Mac techs reach for most: resetting NVRAM/PRAM, rebuilding system kext caches, rebuilding LaunchServices (to clean up duplicate "Open With" entries), resetting the Dock, repairing Extensions permissions, and clearing XPC service caches.

Each task is explained before you run it, and an "Execute All" option runs every task back-to-back for a full reset.

6 Tasks
Common Mac-tech fixes bundled
Execute All
Full reset in one click
Explained First
Every task described before running
Legacy Focus
Built for Mojave and earlier

Features

The fixes Mac techs reach for most

Mac Optimizer bundles the go-to troubleshooting tasks into one simple panel.

NVRAM/PRAM Reset
Clear stored startup settings with one click.
Kext Cache Rebuild
Rebuild system kernel extension caches.
LaunchServices Rebuild
Clean up duplicate "Open With" menu entries.
Dock Reset
Restore the Dock to its default state.
Permissions Repair
Repair Extensions permissions that can cause launch issues.
Execute All
Run every task back-to-back for a full system reset.

Guide

How to use Mac Optimizer

  1. Open Mac Optimizer and pick the task you need: NVRAM/PRAM reset, rebuild system caches, rebuild LaunchServices, or reset the Dock.
  2. Read the description for that task first — some of them delete files as part of the process.
  3. Click the button for that task and enter your administrator password if prompted.
  4. Re-customize the Dock or relaunch affected apps afterward, since some tasks reset them to their defaults.
  5. Only use "Execute All" once you're comfortable with what every individual task does — it runs them all in sequence.

Technical Details

System requirements

macOS
Mojave (10.14) or earlier
Architecture
Intel Mac
Privileges
Administrator password for some tasks
Price
Free
Mac Optimizer

A sluggish Mac,
fixed in minutes.

Bundle the most common Mac-tech fixes into one simple panel.

Download Mac Optimizer Free ← All Apps

Frequently Asked Questions

Got questions? We've got answers.

How does Mac Optimizer free up space?
Mac Optimizer safely scans and purges deep system caches, temporary files, and application logs that accumulate over time.
Will Mac Optimizer delete my personal files?
No, Mac Optimizer only targets system junk and cache files. Your personal documents, photos, and applications remain untouched.
How do I open apps blocked by macOS Gatekeeper?
macOS Gatekeeper may flag apps from unidentified developers. To open them, right-click (or Control-click) the app icon and select "Open" from the context menu, or learn more here.