Rebel GCanvas Studio
Built natively for macOS
A professional raster painting and image-editing studio with a Rust engine at its core: pressure-aware brushes, deep layers, vector and text, print-grade color, and AI that runs on your Mac — never in the cloud.
- Apple Silicon + Intel
- Rust engine
- PSD · PDF/X-4 · SVG
- On-device AI
One studio. Every canvas.
Raster painting, photo editing, vector shapes and type, color-managed print output and local AI — in one fast, native Mac app with a dark, distraction-free workspace.
Pressure, tilt and rotation dynamics, textured grain, smudge, clone and heal, 12 built-in presets plus your own.
Groups, masks, clipping, pass-through, adjustment layers, multi-select and 13 blend modes, with linear-light blending.
Marquee, lasso, magic wand, free transform, rulers, guides and snapping, rotated crop with handles.
Shapes, pen paths with point editing, booleans, and real OpenType text typed right on the canvas.
Content-Aware Fill and AI canvas expansion with LaMa, running on your Mac. Images never leave it.
Display P3 documents, soft proofing, CMYK TIFF, and PDF/X-4 with bleed and crop marks.
Dark. Fast. Focused.
- Tiled, zoom-aware rendering: only visible tiles are drawn, at a resolution matched to the zoom, on all CPU cores
- Rotate the view freely (R, or trackpad rotate), pan with Space, zoom with mip-mapped previews
- Docked, collapsible panels: Navigator, Color, Brush, Adjustments, Text, Shapes, Layers, History — Tab hides them all
- Command Search (⌘K) finds any command by name
- Crash-safe: autosave every 30 seconds with recovery at the next launch
- Undo everything, with a memory budget shared across documents
Command search
- FilterMotion Blur…
- FilterGaussian Blur…
- ToolsSmudge / Blur / Sharpen Tool
Brushes that feel it.
A dedicated brush engine reads every sample from your tablet — pressure, tilt, rotation and the eraser end — and shapes each dab in real time.
Dynamics
- Pressure response curves
- Velocity and tilt dynamics
- Elliptical tips: roundness and angle, from direction, tilt or rotation
- Jitter and scatter
- Stroke smoothing
Tools
- Brush & eraser with procedural paper, canvas and noise grain
- Smudge, blur, sharpen
- Clone stamp (aligned or not) and healing brush
- Gradient and paint bucket
12 presets
- Hard Round
- Soft Round
- Pencil
- Ink Pen
- Soft Airbrush
- Calligraphy
- Chisel Marker
- Tilt Pencil
- Spatter
- Chalk
- Canvas Oil
- Dry Brush
Save your own, mark favorites, and share them as .rcbrush files.
Stack it. Mask it. Blend it.
Multiply- Pixel, shape, text, adjustment and group layers, arranged by drag and drop
- Layer masks and clipping masks; lock transparency or the whole layer
- Pass-through groups: adjustments and blend modes inside a group reach the layers below
- Linear-light blending per document, for physically correct color mixing
- Multi-select with ⌘-click and ⇧-click, then group, merge or delete in one step
- Non-destructive adjustments: Levels with a live histogram, Curves, Hue/Saturation, Exposure
Precision, any angle.
Selections
- Rectangle, ellipse, freehand and polygonal lasso, magic wand
- Add, subtract, intersect; feather, expand, contract, invert
- Paint, fill, filter and adjust only inside the selection
Transform & canvas
- Free transform with live preview; move and nudge
- Crop handles and rotated crop (drag outside a corner, ⇧ for 15° steps)
- Canvas size, image size, rotate and flip canvas
- Rulers, guides and snapping
Sharp at every size.
Shapes & paths
- Rectangle, rounded rectangle, ellipse, polygon, star, and the Pen tool for Bézier paths
- Direct Selection: drag points and handles, double-click to add a point, ⌥-click for corner or smooth
- Boolean operations: unite, subtract, intersect, exclude
- Shapes stay vector through moves, transforms and resizing
Type
- Type directly on the canvas, or in the Text panel
- Text boxes that wrap lines to a width
- Every installed font, OpenType shaping, weight, italic, size, leading, tracking, alignment
- Convert to shapes, or rasterize
Effects with a live preview.
Filters
- Gaussian Blur
- Motion Blur
- Unsharp Mask
- High Pass
- Add Noise
- Median
- Background processing on every core, with progress and Stop
- Preview toggle to compare with the original
- Works on pixels or masks, inside the selection
Gradients
- Linear, radial, reflected and diamond
- Up to 32 custom color stops with opacity
- Dithering against banding
AI that stays home.
LaMa, an open inpainting model, runs on your Mac. You choose when to download it; your images are never uploaded.
Content-Aware Fill
Select an object and it’s gone: the area is rebuilt from its surroundings, on a new layer.
Real result: a wall disc and a bag removed — drag to compare
- One step to undo; progress and Stop
- Verified downloads (SHA-256), license shown before you agree
AI Expand
Grow the canvas and let the model continue the scene. Or use Extend Edges, with no model at all.
Real result: a 640 px photo expanded to 1120 px
Screen to press.
Color management
- Display P3 documents for richer reds and greens on Apple displays
- Embedded profiles honored on import; exports carry the document’s profile
- Convert to / Assign Profile
- Soft proofing (⌘Y) and gamut warning (⇧⌘Y) with your printer’s profile
Print output
- CMYK TIFF with the output profile embedded
- PDF/X-4 with an output intent
- Bleed, trim boxes and crop marks
- Shapes and text stay vector in PDF
Opens what you use.
| Format | Open | Save | What carries over |
|---|---|---|---|
| .rcanvas | Everything, fully editable (the native project) | ||
| Photoshop PSD | Layers, groups, masks, clipping, blend modes, pass-through | ||
| OpenRaster | Layers and groups for Krita, GIMP, MyPaint | ||
| — | Vector shapes and type, transparency, PDF/X-4 | ||
| SVG | — | Vector shapes, text as outlines, images | |
| PNG · JPEG · WebP | Color profiles, transparency (PNG, WebP) | ||
| TIFF · BMP | Plus CMYK TIFF for print |
- Batch Export: open documents or a folder to any format, with filename templates, per-layer files and fit-to-size
- Double-click .rcanvas files in Finder, or drop images on the Dock icon
- Atomic saves: a crash never leaves a half-written file
Built in Rust. Built to last.
Tiled raster engine, multi-core compositing and filters, mip-mapped display.
Tauri 2 native app with a lean React interface.
Little CMS 2 for ICC profiles, proofing and CMYK.
tiny-skia rendering, rustybuzz OpenType shaping.
tract: a pure-Rust runtime running the LaMa model on the CPU.
390+ automated tests; formats checked against Apple’s own tools.
Distribution
- Apple Silicon and universal (Intel) builds, delivered as a DMG installer
- Hardened runtime; open-source licenses listed in Help
Status, honestly: tablet input is implemented but not yet tested on Wacom, Huion or XP-Pen hardware; Developer ID signing and notarization are ready; in-app updates are planned.
Create without limits
Join the waitlist and we’ll email you the moment Rebel G Canvas Studio is ready to download.
Rebel G Canvas Studio · by Rebel G Society
© Rebel G Society. Artwork shown in the app © Rebel G Society. Interface images were captured from the app’s development build; the AI and print images are real engine output. The sample photograph comes from the LaMa project (Apache-2.0). Features may change before release. macOS is a trademark of Apple Inc.; Photoshop is a trademark of Adobe.