IconVault's Duplicate Finder finds duplicate files by content, not by name. It hashes every file with SHA-256 and groups files with identical hashes together, so renamed copies, repeated downloads and forgotten backups are all caught. Each group shows the wasted bytes it costs you, with a running total across the whole scan.

Everything happens 100% in your browser: file contents are hashed locally and never uploaded, so the tool is safe for private photos, documents and work files. On supported browsers you can scan a whole folder at once via the File System Access API; everywhere else you can select multiple files. Visitors get 5 free scans with no signup; IconVault Pro ($12/year) unlocks unlimited use of every tool.