Folder Sync for macOS

Keep your Mac backups in sync with a clear preview before anything changes

Protect valuable folders by choosing what to copy from and what to update. Exclude temporary, generated, or private files, then preview every change—files to add, update, leave untouched, or remove—before you run sync across local folders, external drives, direct Dropbox locations, and Google Drive folders synced locally with the Google Drive client.

Dropbox is a direct, authorized remote workflow. Google Drive remains a local-folder workflow: use the Google Drive client to keep Drive folders available locally first.

Product walkthrough

See Folder Sync from preview to confirmation

Watch how FileLever compares two folders, makes pending changes visible, and lets you choose copy/update or mirror only after reviewing the plan.

A clear workflow

Sync in five deliberate steps

01

Choose your source and target

Choose the folder that defines the current version and the folder you want to bring up to date. It could be a project and its external-drive backup, a photo library and an archive, two active working folders, or a local folder paired with a Google Drive folder synced locally by the Google Drive client.

02

Decide what to exclude

Leave temporary, generated, or private files out of the comparison. Add patterns such as *.log or cache/ directly, or load an exclude file. Common operating-system clutter is ignored by default.

03

Preview the differences

FileLever compares both folders before a sync begins, then sorts the results into clear groups so you can see the outcome in advance.

04

Choose the right sync mode

Use copy/update to refresh the target without removing its extra files. Choose mirror only when the target should deliberately become a replica of the source.

05

Confirm and review the result

Confirm the reviewed plan to run the sync. FileLever applies the selected mode, then shows the completed result so you can see whether the source and target are current.

FileLever folder sync preview showing files to sync, target-only files, and unchanged files before a sync

Keep backups in sync with preview

See every file group before the backup or sync runs

Protect valuable folders by previewing what will sync, what stays target-only, and what is unchanged—then choose copy/update or mirror with a clear plan.

  1. 01 Confirm missing and changed source files before they reach the target.
  2. 02 Treat target-only files as a deliberate keep-or-remove decision.
  3. 03 Choose copy/update to keep backups current or mirror for reviewed replicas.

Before anything changes

Preview the differences

The preview separates the work that needs attention from the files that can stay as they are.

To Sync
Source files missing from the target, along with files whose target copy needs updating.
Target Only
Files found in the target but not in the source. Copy/update leaves them untouched.
Unchanged
Files that already match in both folders, with no work required.

Choose intentionally

Two modes, two different outcomes

Mode What it does Best for
Copy / Update Adds missing source files and refreshes changed ones. It keeps files that exist only in the target. Backups, archives, and any target that may hold extra files worth keeping.
Mirror source to target Brings the target in line with the source, then removes files found only in the target. Deliberately maintained replicas that should match the source exactly.

A familiar use case

Example: updating an external-drive backup

Your laptop project folder is the source; the external drive is the target.

After previewing, you may see:

  • 30 files under To Sync: 24 new files and 6 changed files
  • 3 Target Only files—perhaps older exports that live only on the drive
  • 140 unchanged files

Choose Copy / Update to retain those exports. Use Mirror only when removing them is the right way to make the backup match the source.

Preview the differences first. Keep backups in sync when you are ready.

Start with a clear comparison and stay in control through final confirmation—no FileLever cloud, just local and authorized folder paths.