Powerful Layer Capabilities
* Over 25 different non-destructive blending mode options.
* There is no limit to the number of layers and group layers, so you are never held back in creating complex intricate images.
* Use layer masks to block out unwanted areas of your image or to expose layers below.
* Transform, rotate, move, lock, merge, delete, and duplicate your layers quickly and easily.
* Use Acorn’s snapping to line things up perfectly. Snap to grid, guides, selections, shapes, layers, and the canvas.

Filters, Layer Styles, and Effects
* Apply endless combinations of layer styles and non-destructive filters to create unique effects.
* Save and modify your filters even after you’ve closed and re-opened your Acorn image.
* Customize your own presets and use the on-canvas controls to get things looking just right.
* Tilt shift, vignette, shadow, distortions, blurs, and over a hundred additional effects. Adding effects to your images has never been so easy.
* Use non-destructive curves and levels to adjust the individual color channels to perfect the mid-tones, shadows, highlights, and contrast in your images.

The Tools You Need
* Powerful eraser tools like instant alpha make removing photo backgrounds and other unwanted pixels from your images both fast and fun.
* Use traditional photography techniques like dodge and burn to highlight and darken your images.
* Acorn’s customizable clone, blur, and smudge brushes will have your photos looking great.
* Acorn features brushes that let you draw and sketch right on your image. Use a track pad, mouse, or even a tablet.
* Create your own brushes using Acorn's built in brush designer, or add to your brush library by importing photoshop brushes.
* Use Acorn’s multi-stop live gradients to create beautiful linear and radial gradients for vector shape and bitmap layers.
* Create custom selections, invert, feather, and even add a corner radius. Quickly select an entire color using the magic wand.
* Quickmask mode allows you to easily create and edit your selections like never before.

Vector Prowess
* Acorn’s text tool gives you control over your text in a simple interface. Everything is in the text palette from bold and italic to kerning and ligatures.
* Stars, arrows, bézier curves, circles, lines, and squares are just a handful of the vector features awaiting you.
* Use Acorn’s powerful shape processor to move, tweak, generate, and adjust shapes. Best of all, shape processors are non-destructible and stackable just like Acorn’s filters.
* Boolean shape operations include union, intersect, difference and exclude. Create complex vectors with ease.
* Convert text to bézier paths, add and subtract bézier points, and have your edges snap to pixel boundaries for precise alignment.

Professional Features
* RAW image import that allows you to import as 32, 64, or even 128 bit images.
* Create layered screenshots of every window you have open on your computer. It’s magic.
* Optimize and export your images for the web as PNG, JPEG, JPEG 2000, and GIF.
* Acorn is automatable and scriptable. Perform batch image editing using Automator, AppleScript, and javascript. You can even write custom plugins for Acorn.
* Use Acorn’s Smart Layer Export for easy 1x and 2x image export.
* Retina canvas support, and image metadata support.

Compatibility: OS X 10.14 or later

Homepage: http://flyingmeat.com/acorn/