Hash Duplicate Cleaner is a fast, accurate Linux desktop utility for finding and safely cleaning exact and criteria-based duplicate files across multiple folders. Independent open-source project, not affiliated with or endorsed by any third-party software vendor.

3-STAGE HASH DEDUPLICATION ENGINE • Stage 1 (Size Buckets): Immediately skips unique file sizes without reading unnecessary bytes. • Stage 2 (Partial Signature): Compares fast head/mid/tail 64 KB blocks before hashing full files. • Stage 3 (Full Streaming Digest): Verifies exact duplicates via streaming SHA-256 or MD5 checksums, with optional Same Name + Same Size mode.

MULTI-FOLDER CRITERIA & PROTECTED FOLDERS • Scan multiple directories and mark trusted folders as Master / Keep Only so originals inside protected trees are never selected for removal. • Filter by minimum and maximum file size or extension presets (All, Documents, Images, Audio, Archives).

SMART SELECTION ASSISTANT, INLINE PREVIEW & UNDOABLE QUARANTINE • Inspect grouped duplicates in a color-banded table alongside an inline text and image preview pane. • Smart Selection Assistant checks copies automatically with Keep Oldest, Keep Newest, Keep Shortest Path, and Unmark Protected Folder rules. • Move selected duplicates to a safe Quarantine backup folder or confirm permanent deletion, then review history, restore files to their original paths in one click, or export cleanup reports to CSV. • Built-in English and Vietnamese language toggle.

SUPPORT & DONATE • Created by Thanh Nguyen — https://buymeacoffee.com/thanhnv128b