For Mac · 100% local · no subscription

Finally know what's
eating your disk.

Every disk map shows you where the space went. Diskmack tells you what each folder is, whether it's safe to delete, and cleans it the right way, in one click.

Get Diskmack · $9.99

Limited time · 50% off $19.99

See how it works ↓
Diskmack · Macintosh HD · ~/brightonm1
108.4GB scanned in 4.2s
safe to clean caution your files
Library45.1 GB
Music21.3 GB
Documents18.4 GB
.cache3.7 GB
.hermes3.2 GB
Splice2.7 GB
.npm2.3 GB
~/.npmSafe to clean

npm's package cache, copies of every package you've ever installed, kept so reinstalls skip the download. Deleting it loses nothing: npm rebuilds it on your next install.

Comes back?Yes, on next npm installOwned bynpm, still installedOfficial cleanernpm cache clean --force
✦ Clean safely · free 2.3 GB

Whole disk, seconds flat

Plain English, not filenames

One-click clean, always undoable

Smart enough to explain.
Private enough to trust.

The intelligence is a curated rules database, like antivirus
definitions, not AI. Your files never leave your Mac.

Everything analyzed
on your Mac
Zero bytes uploaded

No AI Reads Your Files

No LLM, no cloud processing, no telemetry.
The scan runs locally and stays local.

Rules database93
Known space-eaters

Knowledge, Not Guesswork

93 curated rules at launch, updated like
antivirus definitions, and growing weekly.

safe to clean
caution
your files

Safe by Design

Deletes go to the Trash, never rm.
Documents, Music, and photos are protected.

The usual suspects

It already knows
what ate your disk.

~95% of any full disk is the same few hundred well-known paths.
Diskmack recognizes them on sight, and knows the official way to clean each one.

📦 npm & yarn caches
🔨 Xcode DerivedData
🐳 Docker disk images
🕳️ node_modules graveyards
🍺 Homebrew downloads
🎮 Steam libraries
🎵 Splice samples
🐍 pip & conda caches
🦀 Cargo build artifacts
Time Machine snapshots
🌐 Browser caches
👻 Orphaned app leftovers
80+ more rules

The map and the meaning

Disk maps show you a big colorful blob and wish you luck. Cleaner suites clean behind closed doors. Nobody does both, until now.

Disk maps

DaisyDisk, GrandPerspective

  • Shows where the space went
  • Explains what each folder is
  • Tells you if it's safe to delete
  • Cleans with official tools

Cleaner suites

CleanMyMac & friends

  • Shows where the space went
  • Lets you drill into anything
  • Cleans known junk
  • One-time price, no subscription

Diskmack

the map + the meaning

  • Shows where the space went
  • Explains every folder in plain English
  • Safety badge before you delete
  • Official cleaners, Trash-only deletes
FAQs

Fair questions,
straight answers.

Gigabytes back
in 3 steps

1
Scan the whole disk in seconds
2
See what everything actually is
3
Clean what's safe, with confidence
Trash-only deletes, always undoable

Pay once.
Own it forever.

$19.99$9.99
Limited time, save $10
Includes 1 year of updates
14-day money-back guarantee
Get Diskmack