Large libraries
A library’s total does not tell you which files are originals or generated output.
Where the space goes
Missing originals
An exported movie is not a backup of the edit, raw footage, or project dependencies.
External storage
A disconnected source drive or cloud placeholder can hide dependencies from a local scan.
A practical cleanup workflow
Scan each media volume
Use the same scope for each scan and check that the relevant external drives are mounted.
Open the project
Check linked media and completion state in Final Cut, Premiere, Resolve, or the application that owns it.
Clear generated media through the editor
Use the editor’s cache/proxy/render management rather than deleting package internals by guesswork.
Keep a verified archive
Preserve originals and projects, verify the archive, then use the collector only for files you have identified. Trash retains storage until emptied.
Tools to compare
NullDisk offers native Mac maps, SSH/cloud sources, and development cleanup, plus a separate CLI. Match each tool’s platform and features to the job.
- Disk Graph — People who want saved storage history or a companion on iPhone/iPad. Requirements: macOS, iOS, iPadOS
- DaisyDisk — Mac users who want a sunburst, cloud connections, and snapshot tools. Requirements: macOS
- GrandPerspective — People who want a free, inspectable treemap and reusable scan records. Requirements: macOS 14+ (current release)
NullDisk features → · CLI and terminal workflows →
Common questions
Does the map identify safe-to-delete proxies?
No. It shows where storage is used. Confirm the role of each file in the editing application.
How can I track project growth?
Disk Graph exports snapshots; GrandPerspective saves scans. NullDisk’s CLI can save JSON reports. Keep matching scope and size semantics when comparing dates.