Understand disk usage and eliminate duplicates

Large file collections tend to grow organically over time — often across multiple disks, backups, and archives. Blitz Indexer helps you understand what’s using your storage and identify unnecessary duplication, without guesswork.

See where your space is going

Blitz Indexer includes a disk usage visualisation that shows how space is used within a folder, volume, or entire index.
Large segments highlight folders or files consuming the most space. You can drill down interactively to explore subfolders, with colour coding that distinguishes file types such as images, documents, and media.

Identify exact duplicates across disks and archives

Blitz Indexer detects files with identical contents, even if they have different names, live in different folders or volumes, or appear both inside and outside archive files.

Duplicates are grouped automatically, with file counts and total size shown so you can immediately see how much space is being wasted.

Find redundant copies and similar images

In addition to exact duplicates, Blitz Indexer can identify duplicate directories, archives and expanded folders containing the same data, and visually similar images — for example resized or colour-adjusted versions of the same photo.

This is particularly useful for photo libraries, project folders, and long-term backups.

Decide what to keep — and what to remove

Blitz Indexer is designed to help you make informed decisions.

Duplicate groups are sorted by size to prioritise the biggest savings. Built-in safeguards prevent deleting all copies of a file, and image tools avoid removing higher-quality originals while leaving only reduced versions.

You stay in control of every action.

Clean up even when the disk isn’t connected

Because Blitz Indexer can index removable and offline volumes, you can identify duplicates across disks that aren’t currently mounted, decide which copies to keep before reconnecting drives, and maintain a cleaner, more intentional archive over time.

Clear visibility, not automatic cleanup

Blitz Indexer doesn’t try to automatically “clean” your data. Instead, it gives you clear visibility into how your storage is used, so you can make careful, confident decisions — whether you’re managing a personal photo archive or a complex technical dataset.