Protect copies with FileLever
Compare two folders on Mac before you sync what matters
Protect backups before folder sync on Mac. Compare two folders or directories, see changed and target-only files, then preview the next action.
Practical workflows
Protect valuable data. Keep backups in sync. Preview every change.
Start with the outcome you need—keep recovery copies current, preview every update, then clear extras when you are ready. FileLever works across local folders, external drives, direct Dropbox locations, and Google Drive folders synced locally with the Google Drive client.
Guide cluster
Protect and keep backups in sync
Start here when you need to protect valuable folders: compare two locations, preview the differences, then sync or archive so backup copies stay up to date.
Inspect contents before syncing
Diff two folders on Mac with Terminal
Protect backup copies with a read-only folder diff on Mac. Use diff -rq, understand missing and changed files, then decide whether a reviewed sync is needed.
Protect copies when syncing
Copy/update vs mirror: which mode can delete target-only files?
Protect backup extras with copy/update, or make a deliberate replica with mirror. Preview which Mac sync mode can delete target-only files before you run it.
Choose how your backup handles extras
FreeFileSync Mirror vs Update: keep backup extras safe
Update keeps files that exist only in your backup. Mirror can remove them. Compare the preview first so photos, edits, and archives stay protected.
Protect copies on Mac
Back up an external drive without recopying unchanged files
Protect photos, projects, and archives you can’t lose. Sync an external-drive backup on Mac without recopying everything—preview first, then keep multiple copies current.
Protect media archives
Keep your media archive backups current without losing track of the copies
Protect photo, video, and project archives you can’t lose. Keep multiple Mac backups current with folder sync on an external drive and Dropbox without recopying everything.
Protect older photos and videos
Archive older iCloud Photos to an external drive on Mac
Protect older Apple Photos and iCloud Photos with an external-drive archive. Preview files, check completed copies, and choose separately whether to free space.
Protect during migration
Move files to a new Mac with a clear review before you copy
Protect files you can’t lose during a Mac migration. Compare old and new folders, then sync and backup multiple archives only after you see what changed.
Guide cluster
Clear extras with preview
After backups are current, confirm exact duplicates or review the largest files—then delete or move-to-archive only with a visible plan.
Reclaim space with proof
Find duplicate files on Mac free with exact-match review
Free up space when the backup is real. Find exact duplicate files on Mac free, keep the archive copy, and remove extras only after you review every path.
Reclaim space with proof
Choose a duplicate cleaner for Mac that shows exact evidence
Free up Mac space after the backup is real. A duplicate cleaner that confirms exact duplicate files so you reclaim extras without losing the archive copy.
External-drive duplicate cleanup
Find duplicate files on an external drive on Mac without guessing
Free up space when the backup is real. Find exact duplicate files on an external drive on Mac, keep the archive copy, and remove extras only after you review each group.
Reclaim space with proof
Find the large project files worth reviewing first
Free up space from large project files only when the backup is real. Find large exports on Mac, then archive or delete after copies are protected.
Guide cluster
Work with connected folders
Keep cloud storage simple: connect Dropbox directly, or choose a Google Drive folder after Google Drive for desktop has put it on your Mac.
Multiply copies to Dropbox
Sync a local folder with Dropbox without blindly overwriting files
Protect local and Dropbox copies you can’t lose. Connect after auth, compare folders, and keep multiple archives current with folder sync before anything uploads.
Reclaim Dropbox space with proof
Find duplicate files in Dropbox without guessing from names
Free up Dropbox space when the backup is real. Find exact duplicate files, keep the archive copy, and remove extras only after you review each group.
Reclaim Dropbox storage
Find Dropbox files taking up space—then decide what deserves to stay
Free up Dropbox space from large files after copies are protected. Review path and purpose, then archive or delete only when the backup is real.
Protect copies across locations
Compare a Mac folder with Google Drive before you sync
Keep important files protected by comparing a folder on your Mac with a Google Drive folder synced by Google Drive for desktop. See every change first.
Reclaim Drive space with proof
Find Google Drive duplicate files without guessing
Free up Google Drive space when the backup is real. Scan the locally synced Drive folder for exact duplicate files and keep the archive copy before removing extras.