Prepare folder sources
Choose two directory roots that represent the same logical artifact, such as previous and candidate release folders. Confirm orientation before enabling copy actions.
Apply built-in ignore presets or focused custom patterns so generated caches do not overwhelm meaningful changes.
Compare large trees
Folder comparison walks both sources recursively and pages results so an unbounded tree is not transferred into the interface at once. Filter by added, removed, changed, or unchanged status as the review progresses.
Open a nested pair directly when a changed entry needs content-level comparison.
Synchronize with a plan and an undo path
A Pro synchronization starts from selected relative paths and can mirror them left-to-right or right-to-left. Before confirmation, the plan reports exact create, update, and delete counts; deletion is never hidden inside a generic copy action.
The operation is transactional. If part of the plan fails, completed entries are rolled back. After success, one-click undo remains available while the destination is verified.
- Verify left and right orientation.
- Review create, update, and delete counts.
- Keep both roots available until the result is verified.
Inspect archives
Archive mode compares entry paths and content hashes without unpacking either artifact into its source directory. It reports entries that were added, removed, or whose extracted bytes changed.
Archive entries cannot be opened directly into another comparison mode. Extract the relevant files separately when a changed entry needs a deeper semantic or visual comparison.
Compare documents
Document mode extracts comparable text from supported PDF, Office, and RTF files while preserving the distinction between source documents and normalized comparison text.
For PDFs, switch between rendered pages and extracted text, move between pages, zoom the originals, and follow difference navigation to the associated page. Office and RTF review remains text-based; extracted text does not prove pixel-identical layout.
Use visual image tools
Image mode aligns both inputs on a shared transparent canvas and provides side-by-side, overlay, swipe, blink, heatmap, and changed-pixel views. Real-pixel zoom, a transparency grid, and a threshold make small raster and alpha changes easier to inspect.
The summary reports changed pixels, similarity, mean and root-mean-square error, maximum channel change, and the bounds of the changed area. Dimension changes stay part of the pixel analysis instead of disabling it.
