A free disk space analyser and photo sorter in one program
Disk Sort by Zaweba is free software that maps where your drive space went and lets you sort the photos you find, all in one offline window.
Disk Sort by Zaweba is a free, offline Windows program that does both jobs. It scans a drive, shows where the space has gone as a folder tree with size bars and a treemap, and then lets you sort the photos and files you find without switching to another app. You keep keepers, star the best shots, tag files across folders and send the rest to the Recycle Bin, all from the same window.
Most people meet the two jobs together. A drive fills up, the culprit turns out to be years of phone pictures, and the next question is which of them are worth keeping. Disk Sort was built around that moment, combining the core tools of Disk by Zaweba and Sort by Zaweba into a single app.
What the analyser half does
Pick a drive in the strip along the top, or use Scan this folder (Ctrl+O) for one folder. The scan adds a size layer to the folder tree, so each line gains a bar, its share of the parent and its size. Standard scans run in parallel and work on any file system without administrator rights.
The MAP tab draws every scanned folder as rectangles sized by space, with cushion shading so the big blocks stand out. Double-click or press Enter to zoom into one, and Backspace to go back up. Press V and the same data becomes a sunburst, where each ring is one folder level deeper. You can colour the map by file type, by age or by growth since the previous scan.
Behind the map sit tabs for the jobs that follow a scan. DUPLICATES finds identical files above a minimum size you set, with an option to confirm byte by byte after the hashes match. TYPES totals the open folder by file type and extension. OLD & LARGE lists big files that have not changed in a chosen number of months, and CLEANUP measures temp files, browser caches and similar space users.
What the sorter half does
The FILES tab shows a folder as thumbnails (Ctrl+1), a detailed list (Ctrl+2) or one picture at a time (Ctrl+3 or Enter). Thumbnails and the large view cover JPG, PNG, WebP, HEIC, GIF, BMP and TIFF, and pictures are turned the right way up from their EXIF details.
Click the star on a picture or press P to mark a keeper, and press 1 to 5 for a star rating. When you have chosen, Delete all but keepers sends every other picture in the list to the Recycle Bin after you confirm. It does nothing until at least one keeper is marked, which stops an empty selection from clearing a folder by accident. Marks are saved beside the photo.
Tagging works across folders. T and U tag and untag, Ctrl+T tags everything shown, and G lists every tagged file wherever it lives. From there you can copy, move, zip or rename the whole set. Bulk rename (R or F2) gives a live Before and After preview and tokens such as {camera} and {n:000}, and Undo last rename reverses a batch.
Why having both in one window helps
With separate tools you scan in one program, note the folder, open it in another, sort, then rescan to see what you saved. Here the map and the photos share the same scan. Spot a large block on the treemap, open that folder in the FILES tab, cull it, and the space comes back in the same session.
It also means the safety rules are the same everywhere. Deletes go to the Recycle Bin with a confirmation that shows counts and a preview. Drives without a bin are refused rather than wiped, and Windows, Program Files and the root of every drive are protected. Edits and exports never change your originals.
Free, offline and without an account
Disk Sort is free software under the Zaweba EULA. There is nothing to sign up for and it works offline. The only network use is a once-a-day update check that downloads nothing, a weekly list of Zaweba apps, a ZIP download you ask for, and problem reports you choose to send, which carry command names and never file names. It runs on Windows 10 and 11 (64-bit), and there is also a Mac and Linux build that shares the same engine.
If you have been juggling a disk analyser and a separate picture viewer to tidy one drive, try doing the whole job in Disk Sort. Start with the biggest block on the map and work down.
