Batch image processing
for macOS,
fast and simple
Native macOS Apple Silicon app. 8 transformations, live preview, and batch processing with reusable presets.
- Live before/after preview
- Drag-and-drop transformation reordering
- JSON-exportable presets
Transformations
Input formats
Output formats
Current version
How it works
Four steps. No complications.
Import
Pick the folder with your images. Recursive search across subfolders is supported.
Configure
Enable the transformations you need and reorder them with drag-and-drop.
Preview
See the before/after in real time as you tweak each parameter.
Export
Process the full batch and export to WebP, JPEG, PNG or TIFF preserving folder structure.
Everything you need to process images
A complete toolkit for photographers, designers, and content creators on macOS.
Live preview
See the before/after result in real time, with 150ms debounce on every parameter change.
Drag-and-drop
Reorder the transformation pipeline by dragging cards, powered by Sortable.js.
JSON presets
Save combinations as reusable recipes. Import/export them as JSON files.
Batch processing
Process whole folders recursively while preserving the original directory structure.
Multi-format
Reads JPG, PNG, WebP, BMP, and TIFF. Exports to WebP, JPEG, PNG, or TIFF with configurable quality.
Auto-update
Detects new versions from GitHub Releases, downloads them, and prepares the installation.
Collapsible sidebar
Maximize workspace. The sidebar collapses to 48px with contextual tooltips.
Open source under AGPL-3.0
Auditable, no telemetry, no accounts. Built with Python and Pillow.
8 transformations, infinite combinations
Each transformation runs in the order you choose.
Flip
Flip horizontally or vertically.
Rotate
Rotate any angle from -360° to 360° with transparent background.
Safe Square Crop
Smart square crop that preserves opaque corners after a rotation.
Resize
Resize by percentage (10-500%) or fixed dimensions with optional aspect ratio.
Brightness
Adjust brightness between 0.5 and 2.0.
Contrast
Adjust contrast between 0.5 and 2.0.
Sharpness
Set sharpness between 0.0 and 3.0.
Watermark
Add text as a watermark: size, opacity and position (4 corners or center).
Download Image Transform Lite
macOS Apple Silicon (arm64). Free and open source.
v1.6.0 — Latest release.pkg installer
Double-click and it installs automatically into /Applications.
Download .pkgRequires macOS 11 or later. Apple Silicon (arm64).
First launch: right-click → Open (the app isn't signed with an Apple Developer certificate).