Where the space goes
The big eaters are usually photos, videos and downloads. And that is exactly where most copies appear: the same 4K video on your drive and your backup, exports in three formats, the same download ten times.
Duplicates are the fastest win
Deleting a duplicate is risk free: you keep the original, you gain the space. No trade-off like with photos you might still want.
DupliFind shows how much space you reclaim per group, so you start with the biggest.
How to clean up
- Scan your drive, external drives and NAS in one go
- Sort by wasted space and start at the top
- Keep one copy per group, clean up the rest to quarantine
- Empty the quarantine folder once you are sure everything is fine
And after that
Only once the duplicates are gone does it pay to look at the rest: old downloads, caches and large files you no longer need. But start with the free, risk-free win.