Diskfern

Your Mac isn't necessarily running out of space because you have too many files. Sometimes, it's because you don't know what's taking up space, what can be safely removed, or what you should leave alone. Diskfern makes your Mac's storage understandable. **More than finding large files. Understand what's behind them.** Most disk visualizers show you where your storage went. Diskfern goes a step further: it helps you understand what you're looking at and decide what deserves to stay. Explore your entire startup disk, home folder or any selected directory through three interactive views: - **Treemap:** Spot massive files and folders instantly through a visual map. - **Sunburst:** Navigate deep folder structures and uncover hidden storage consumption. - **List:** Sort and inspect files by size, name, type and other properties. **44 Smart Highlights. Less guesswork, better decisions.** Finding a 20 GB folder is easy. Knowing whether it's safe to remove is the difficult part. Diskfern organizes common storage hogs into 44 categories, including Xcode data, Android emulators, Docker, package caches, browser caches, logs and downloads. Each category has a safety label: - Safe: Rebuildable or replaceable clutter. - Review first: Files that may contain something you need. - Protected: Locations that should not be cleanup targets. You can also inspect file paths, permissions, dates and sizes, and preview items before taking action. **Built for developers and people who use their Macs for real work.** Developer tools quietly accumulate gigabytes of data. Xcode, Android SDKs, emulators, Docker, Gradle and package caches can consume substantial storage without making it obvious where the space went. Diskfern brings these scattered storage categories into one searchable view, making it easier to investigate the data behind your Mac's growing storage usage, including the folders that contribute to System Data. **Search your storage instead of digging through folders.** Diskfern Finder supports natural-language searches such as: - Videos larger than 1 GB - PDFs created this month - Screenshots from this week - Largest files in Downloads Find what you're looking for across millions of indexed records without manually opening hundreds of folders. **Cleanup that puts you in control.** Diskfern doesn't silently decide what should disappear. Its Collector lets you gather cleanup candidates, review individual items and see the potential space savings before acting. Safe items can be staged together, and approved cleanup starts with moving items to Trash rather than permanently erasing them. Pro also includes an app uninstaller and Disk Advisor AI, which can explain unfamiliar folders and provide on-device storage guidance. Disk Advisor requires macOS 26 or later and a Mac that supports Apple Intelligence. Its suggestions should still be reviewed before acting. **Real performance measurements, not marketing numbers.** Tested on a MacBook Air with Apple M4, 16 GB RAM and macOS 26.6: - Approximately 2.9 million files scanned from the startup disk in 16.055 seconds. - Natural-language search for "videos > 1 GB" across 2 million records: 2.35 ms median. - Search index built for 2 million records in 184.4 ms. - A saved scan containing 500,000 items restored in 18.62 ms. These results come from 2,888 measurements across 330 tests. Actual performance varies with hardware, storage, permissions and system load. These are Diskfern's own benchmarks, not a direct comparison against competing apps. **Why choose Diskfern?** A visual disk analyzer is great for finding large files. A general-purpose cleaner is useful for broader maintenance. Diskfern focuses on connecting the two missing pieces: understanding what occupies your storage and making informed cleanup decisions.