dupeGuru

dupeGuru is a tool for locating and managing duplicate files on computer systems. The software analyzes content, names, or both criteria simultaneously to identify exact or similar duplicates. It operates with multiple formats including documents, images, audio, and code files. The comparison algorithm ignores minor differences in metadata or encoding. The interface presents grouped results with preview and granular selection. It allows moving, deleting, or linking identified files. Supports drag and drop for adding directories. Includes filters by size, type, or date. Generates reports of performed actions. Execution is local without external data transmission.

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• Content Comparison. Analyzes the binary content of files using hash functions. Calculates MD5 checksums for exact duplicate detection. For approximate comparison, it uses content sampling with configurable tolerance. Works with text documents, source code, compressed files, and executable binaries. The process ignores metadata and file system properties.
• Name Comparison. Evaluates similarities in file names using lexical distance algorithms. Detects spelling variations, different capitalization, and varying numbers. Configurable with percentage similarity thresholds. Applies Unicode normalization for cross-platform comparison. Includes options to ignore extensions or special characters.
• Folder Comparison. Identifies directories with identical or overlapping content. Compares folder structure and files simultaneously. Detects partial duplicates where only some files match. Allows excluding specific subdirectories from the analysis.
• Advanced Filtering. A system of combinable filters by size, modification date, file type, or system attributes. Allows creating custom rules based on regular expressions. Filters are applied during scanning or subsequently on results.
• Integrated Preview. Internal viewer for common image formats and text formats. Displays detailed technical information for multimedia files. For unsupported formats, it uses operating system information. Side-by-side comparison of potential duplicate files.
• Results Management. Tabular interface with intelligent grouping of duplicates. Multiple selection with patterns (select all except the most recent). Manual marking of false positives during review.
• File Actions. Permanent deletion with batch confirmation. Move to a designated folder with structure preservation. Creation of symbolic links or hard links to save space. Automatic backup of deletion operations.
• Scan Profiles. Predefined configurations for different file types (music, photos, documents). Customization of comparison parameters for each profile. Saving and loading specific analysis configurations.
• Command Line. CLI interface for integration into automated scripts. Support for execution on headless servers. Output options in JSON or CSV format for external processing.
• Internationalization. Interface translated into multiple languages including Spanish. Support for file names in different encodings. Compatibility with case-sensitive and case-insensitive file systems.

The first public version was released in 2018. Active development continues with periodic updates. Implemented primarily in Python with components in C for optimization. Uses the Qt cross-platform GUI toolkit for the graphical interface. The source code is hosted on GitHub under the GPLv3 license.

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