AllDup is a free duplicate file finder designed to help users locate and remove redundant files from their computer. It scans folders quickly using a fast search algorithm and compares files by various criteria such as name, size, content, and more. The tool supports a wide range of file types and allows for flexible configuration of scan parameters.

The interface is clean and organized, making it easy to select folders, set filters, and review results. Users can preview files before deletion to avoid accidental loss. The built-in selection assistant helps with bulk operations by allowing automatic marking based on specific rules.

AllDup offers multiple comparison methods, including byte-by-byte and CRC32 checksums. These methods help ensure accurate detection of identical files. Duplicate music or photo files, even with different filenames, can be detected with the right settings.

AllDup is suitable for cleaning up hard drives, managing large media libraries, and organizing backup folders. With options for excluding folders, customizing reports, and scheduling scans, AllDup provides flexible tools for maintaining an organized file system.

Key Features:

• Find Duplicate Files: Scans for duplicate files by content, name, size, date, or attributes.
• Fast Search Algorithm: Uses byte-by-byte comparison or checksums (MD5/SHA) for accurate matching.
• Flexible Search Filters: Customize searches with criteria like file extensions, size ranges, or excluded folders.
• Preview Duplicates: View image, text, audio, or video file previews before taking action.
• Multiple Removal Options: Delete, move, rename, or hardlink duplicate files safely.
• Support for Multiple File Types: Works with documents, music, videos, photos, and more.
• Search Within Archives: Detects duplicates even inside ZIP, RAR, and other archive formats.
• Detailed Reports: Generates summaries of found duplicates and actions taken.
• Safe Duplicate Removal: Built-in safeguards help prevent accidental deletion of critical files.