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macOS Disk Cleaner

Safely analyzes your Mac's storage and tells you what's truly junk versus which caches are worth keeping.

UtilitiesIntermediate★ 1,323⑂ 212AI score 9/10Last updated: Aug 8, 2026

What it does

  • Runs multi-layer disk analysis with Mole (mo analyze) inside tmux so you can see exactly what's eating space.
  • Systematically checks four areas: caches/logs, leftovers from uninstalled apps, large files (>100MB), and dev environments (Docker, Homebrew, npm, pip, uv).
  • Labels every finding 🟢 safe / 🟡 trade-off / 🔴 do not delete, always with an "impact if deleted" column.
  • For Docker, lists every individual image, container, and volume — and forbids blanket prune-family commands.
  • Never auto-deletes: it hands you the exact commands to run, then verifies before/after with df -h.

Who it's for

  • Mac users out of disk space who don't know what's safe to remove.
  • Developers with tens of gigabytes of stale Docker images and volumes.
  • Anyone who prefers careful cleanup over vanity numbers like "freed 50GB!".
  • Users on slow connections where re-downloading npm/uv/AI model caches costs hours.

Examples

  1. "My Mac is out of space" → get a classified table of caches, Trash, and Homebrew cache, with commands only for the genuinely safe items.
  2. "Docker is using 100GB" → each image and volume is enumerated, confirmed per project, and the root cause (a CI script leaving build tags behind) gets diagnosed too.
  3. "What's taking up all my space?" → the top 20 large files grouped into videos, datasets, and archives, with a suggestion to archive to an external drive.

· · · Install guide · · ·

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the macos-cleaner folder from the GitHub repo daymade/claude-code-skills into my ~/.claude/skills/macos-cleaner/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/daymade/claude-code-skills.git && mkdir -p ~/.claude/skills && cp -r claude-code-skills/macos-cleaner ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open Terminal (search "Terminal" in Spotlight).
  2. Clone the skills repo: git clone https://github.com/daymade/claude-code-skills.git
  3. Create the skills folder: mkdir -p ~/.claude/skills
  4. Copy just this skill: cp -r claude-code-skills/macos-cleaner ~/.claude/skills/
  5. Install helpers: brew install tw93/tap/mole and brew install tmux (Mole needs a TTY, so tmux matters).
  6. Restart Claude Code and ask "help me clean up my Mac's disk space" — the skill triggers automatically.
  7. Before your first cleanup, check for a backup with tmutil latestbackup.
View source on GitHub ↗License: MIT