Media Deduper (by Cornershop Creative) hashes uploaded files and writes the hash into wp_postmeta under the mdd_hash key. Duplicate detection then becomes a query grouped by that hash. The default admin renders duplicate groups in a paged list with the count and basic file info but no per-file usage column.

SleekView groups wp_postmeta on mdd_hash joined to wp_posts and renders one row per attachment inside a group, plus a parent row per group with the total size and member count. Filename, MIME type, file size, usage count, uploader, and parent post all become first-class columns. Saved views like "groups of three or more", "heavy duplicates over 1MB", or "PDFs duplicated across libraries" cut the per-group click path down to a single screen.

Bulk actions route through Media Deduper's own merge and delete handlers so the plugin's reference rewrite (updating wp_posts content where the duplicate was used) still applies. Direct writes with conflict detection are available where the API is bypassed.

Media Deduper scales technically because it offloads detection to a single postmeta key per attachment, which keeps grouping fast even on large libraries. The default admin does not scale operationally because the duplicate list shows a fixed column set and cannot combine group size, file size, and usage filters in one query. Maintainers want to clear heavy orphan duplicates first, editorial wants to keep the version with the most uses, and finance wants misfiled PDFs grouped by uploader.

None of those views are easy in the stock UI. SleekView changes that by exposing the grouped hash data with usage and parent context as filterable columns and by routing bulk merge through the plugin's own API so references rewrite automatically. Saved views become role-aware, so each team opens the cleanup slice they actually need.

The result is a single auditable screen for the duplicate-cleanup work the plugin's stock list made slow.