Features

See what is taking space. Know what to do next.

Fourteen focused tools take you from a crowded disk to a clear decision. Your files stay on your Mac.

Ask what it is before you remove it

Your Mac has folders with names only a developer could love. Select one and ask what it is, why it is large, and whether it is safe to remove.

Meet Disk Advisor

Disk Advisor explaining whether a selected Mac folder is safe to remove

Disk space analyzer

A disk space analyzer that feels like part of macOS

Map readable folders, then move from the big picture to individual files without losing your place.

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Live scan updates

Open the map you already scanned

Diskfern remembers your last scan, catches up with changes, and keeps the map useful without making you start over every time.

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Treemap

See your biggest folders before reading a list

Every rectangle is a real file or folder, sized by the space it uses. The things worth investigating become hard to miss.

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List view

When you want the exact number, use the list

Sort names, sizes, shares, kinds and dates in a precise table, then expand folders without leaving your place.

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Sunburst

See how storage nests, ring by ring

Start at the centre and follow folders outward. Sunburst makes deep storage hierarchies easier to understand at a glance.

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Inspect & Quick Look

Know what something is before you touch it

Open a native preview, see its real path and permissions, and check why Diskfern marked it Safe, Review first, or Protected.

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Applications

See what every app really weighs

Browse installed apps with their on-disk size, filter the list, and review an app before deciding whether it still earns its space.

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Settings & safety

Safety you can see and control

Choose the default view, keep Trash-first cleanup, review permissions, and decide whether Diskfern remembers your scan.

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Smart Highlights

What you can safely remove, labelled

Turn a wall of folders into useful categories with clear Safe, Review first, and Protected guidance.

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Developer storage

Reclaim the space your dev tools quietly take

Bring Xcode, Android, Docker, package caches, and local AI models into one readable map.

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System Data

Finally see what’s inside System Data

Replace one opaque storage bar with the actual folders and files behind it.

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Diskfern Finder

Find large files with natural-language search

Search with natural queries like 'videos > 1gb', 'pdf this month', or 'screenshots this week'. Words automatically convert into smart filter pills.

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Safe cleanup

Clean up without the fear

Collect candidates, review every choice, and move approved items to the Trash rather than erasing them silently.

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Get your space back. Start with a free scan.

Explore the files and folders Diskfern can read. Your files stay on your Mac, and nothing is removed until you say so.

Download for Mac See pricing

macOS 14 Sonoma or later · Apple silicon and Intel