See exactly what's different. Then make it match.
Compare two folders, from code projects to photo backups, and see what's modified, moved, missing or extra. Then sync them safely, with a preview and undo.
PathDiff is in development and not available yet. This page will link to the App Store when it’s released, and to the source code once the repository is public.
Measured in our tests on two folders of 150,000 files each (about 900 MB per side).
Overview
Drop two folders onto PathDiff and within seconds you know everything: which files changed, which moved, what's missing and what's extra, each with its total size. Review code, photos and videos side by side, then bring the folders back in sync.
It's for developers comparing two copies of a project, photographers checking whether a backup drive really has everything, and anyone with two folders that are supposed to match. Every sync is previewed first and can be undone.
PathDiff is in development. These describe the product direction and may change before release.
Every difference is sorted into modified, moved, missing or extra, with file counts and total sizes for each.
Side by side, swipe, onion skin or a pixel-difference map, with camera and EXIF details lined up.
Two players that play, pause and seek together, plus codec, resolution and bit-rate details.
Each folder's own ignore rules are respected, so build output and clutter stay out of the way.
Trust matching sizes and dates for huge video drives, or read every byte when you need certainty.
Export a Markdown or CSV report, or a patch that git can apply.
Smart matching
Most compare tools report a renamed folder as hundreds of deletions and additions. PathDiff recognizes moved files by their contents, even when they were moved and edited, and one click applies the move on the other side.
For developers
Side by side or unified, with the exact changed words highlighted, syntax colors and a minimap of every change. Jump between changes, copy a block to the other side, or edit both files right in the diff.
For photographers
Point PathDiff at your photo library and your backup drive. In seconds it shows the trip that was never backed up, the photos you edited since, and how many gigabytes are involved, even on terabyte drives.
Safe sync
Choose a direction, or merge both ways so each folder gets what only the other has. Before anything is written, PathDiff lists every single operation, so you can untick what you don't want.
A closer look
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(opens in a new tab)Why PathDiff
Comparing never changes anything. Syncing shows every operation first, removals go to the Trash, and the whole sync can be undone.
Folders are scanned in parallel and results are remembered, so a refresh only reads what changed.
Code, photos, video and audio each get a comparison view made for them, not just a list of file names.
A small yearly subscription instead of a large license fee, with automatic updates and support included.
Privacy and open source
If you buy PathDiff through an app store, that store processes the transaction under its own privacy policy. See our privacy policy for details.
PathDiff’s source code is public, so anyone can review how it works and report issues in the open. A subscription is the easy way to use it, with automatic updates and support, and it funds continued development.
The repository link will appear here once it’s public. How we work in the open
Availability
Price to be announced
A small annual subscription. The final price will be shown on its store listing.
Annual subscription. Renews automatically under the terms shown at purchase, and can be canceled anytime from your store account.
FAQ
PathDiff is in its final stretch of development. This page will link to the App Store as soon as it's released.
Finder can't tell you what's different between two folders, and most diff tools compare paths, so a renamed folder looks like hundreds of deletions. PathDiff detects moves, understands photos, videos and code, shows sizes, and syncs safely with a preview and undo.
Yes. Comparing never changes anything. Syncing lists every operation first, removes files only if you choose to mirror (and then to the Trash), and the whole sync can be undone. Merging both ways never deletes anything.
No. The Quick comparison treats files with the same size and date as identical without reading them, and only compares the rest byte by byte. Results are remembered, so the next comparison only checks what changed.
No. PathDiff works with any two folders. If they happen to be git projects, it respects their .gitignore files and skips files git already knows are unchanged.
Like every OpenAppBox app, PathDiff will be an annual subscription with a deliberately small price. The final price will be shown on the App Store.
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