Built for real storage questions
From the whole drive to the exact file, without losing context.
SpaceLens combines bounded scanning, durable indexes, visual navigation, and transparent accounting in one focused desktop experience.
A treemap that preserves the folder story
Tile area follows the selected byte measurement, while nested headers keep parent names and sizes visible as you drill down.
- Double-click a folder region to focus it, then move back up without rescanning.
- Select a real indexed item to see its exact path, size, and local context.
- Reveal a selected file or folder in Finder or the platform file manager without changing the index.
Measurements that match the question
Use allocated on-disk size for physical capacity questions or logical file length when content size is what matters.
- Scan one or many folders, mounted volumes, removable drives, or reachable network shares.
- Native file identity prevents hard links and directory aliases from silently multiplying totals.
- Nested mounted volumes, unreadable items, and unavailable metadata remain visible boundaries instead of guesses.
Several views, one immutable index
Ask different questions of the same completed scan without rebuilding its data.
- Group by folder, file extension, or practical file category.
- Color independently by file type, last modification, or creation recency with a visible legend.
- Compare top consumers and largest individual files inside the currently focused subtree.
Focused refresh with safe recovery
When one directory changes, SpaceLens can enumerate only that subtree and merge it back into the completed index.
- Sibling subtrees stay exactly as they were in the prior index.
- Ancestor totals and colors rebuild after cross-boundary hard links are reconciled.
- Cancellation, missing access, or an unreadable root leaves the previous completed index available.
History that explains change
Bounded scan summaries preserve exact totals and the largest indexed nodes without duplicating every full tree.
- Compare completed scans to see growth, shrinkage, additions, removals, and changes.
- Optional watching marks an index stale when the filesystem changes after a scan.
- Compressed snapshots restore the last completed index, even after a canceled rescan.
Evidence-backed duplicate and reclaim analysis
Equal size starts as a candidate, not a conclusion; optional SHA-256 verification distinguishes confirmed content matches.
- Hash reads and result sets stay bounded and can be canceled.
- Every reclaim proposal carries evidence, confidence, caveats, and a review requirement.
- Plans are deliberately non-executable because SpaceLens has no filesystem mutation tools.
SpaceLens
The view can change. The evidence stays grounded.
Group, color, focus, compare, and refresh while the measured index remains explicit and inspectable.