File finder / Duplicate file guides
Understand the evidence
Make sense of the copies.
Short, practical guides for making careful decisions about repeated files.
How duplicate detection works
Size, SHA-256, filename conflicts, and the limits of browser verification.
Review duplicate files safely
Compare context, keep the copies you need, and take a useful plan into your file manager.
Duplicate photos or similar photos?
Understand exact image copies, edits, recompression, and visual resemblance.