Yes, most modern duplicate scanning tools allow users to exclude specific file types from the scan. This file type filtering works by letting you define patterns (like file extensions, e.g., .tmp, .log) that the software will skip during its comparison process. It differs from ignoring entire folders as it targets file formats regardless of their location.

For example, a software developer might exclude .git files and .dll libraries to focus only on unique source code duplicates. A graphic designer could ignore camera-generated .xmp sidecar files or .psd temporary files while searching for duplicate .jpg or .png images. Tools like CCleaner, dupeGuru, or specialized commands often support this exclusion list feature.

The primary advantage is increased efficiency and relevance by avoiding unimportant or system-generated files, speeding up scans. However, a significant limitation is the risk of accidentally excluding a relevant file type if the extension list isn't carefully reviewed. While this feature enhances usability, users must ensure their filters accurately reflect their goals to avoid missing potential duplicates hiding within excluded formats.