MachinePainting
c864dcf0f7
Fixes: - Frequency Separate: locked to Photoshop Apply Image formula (Scale 2, Offset 128, Subtract), removed mode/epsilon - Frequency Combine: locked to Linear Light blend, added opacity slider, removed mode/epsilon Updates: - Blur Pro: removed distance and iterations params, motion blur uses radius, box blur single pass - Inpaint Mask Pro: removed SEGS support, inpaint_mask now required
ComfyUI-MachinePaintingNodes
Professional Image Editing & Adjustments, Curves, color grading, mask tools, filters, and advanced utilities for your ComfyUI workflows
A comprehensive node suite for professional level image processing, color correction, frequency separation, film grain, blur tools, inpainting mask management, and advanced workflow enhancement utilities.
New Nodes
| Node | Category | Date Added |
|---|---|---|
| Blur Pro | Filters | 2026-03-27 |
| Noise Grain Pro | Filters | 2026-03-27 |
| Frequency Separate | Filters | 2026-03-27 |
| Frequency Combine | Filters | 2026-03-27 |
| Inpaint Mask Pro | Mask | 2026-03-27 |
| Mask Composite Pro 2X | Mask | 2026-03-28 |
| Mask Composite Pro 6X | Mask | 2026-03-28 |
| Image <> Mask Switch | Utilities | 2026-03-27 |
(All current nodes.)
Installation
ComfyUI Manager (Recommended)
Search for "MachinePaintingNodes" in ComfyUI Manager and install.
Manual Installation
cd ComfyUI/custom_nodes
git clone https://github.com/machinepainting/ComfyUI-MachinePaintingNodes.git
Dependencies
pip install -r requirements.txt
Nodes (40 Total)
Color Adjustment
(example)
| Node | Description |
|---|---|
| Curves Adjust Pro | Interactive Photoshop-style curves with RGB/R/G/B channels, 17 presets, mask support, channel-mask support |
| Levels Adjust | Black point, white point, gamma, output levels |
| Auto Levels | Automatic levels correction |
| Selective Color Pro | CMYK adjustments for specific color ranges and fine tuned color adjustments (reds, yellows, greens, cyans, blues, magentas, whites, neutrals, blacks) |
| Brightness Contrast Adjust | Simple brightness and contrast controls with simple slider controls |
| Color Match Blend | Match colors from one image to another with multiple methods (statistical, histogram, reinhard), blend modes, and adjustments |
| Color Adjust Blend | Color match with blend modes, plus RGB color balance for Shadows, Mid-Range, and Highlights |
| LUT Apply | Apply .cube/.3dl LUT files for cinematic color grading (includes 5 bundled LUTs) |
(examples)
Filters
| Node | Description |
|---|---|
| Blur Pro | Professional multi-type blur with 5 modes: Gaussian, Surface (bilateral/edge-preserving), Box, Median, and Motion blur. Per-type dynamic sliders, mask-controlled application, strength blending, optional mask blurring, in-node preview. Large radius optimization for fast processing at high values. |
| Noise Grain Pro | Realistic film grain/noise generator with grain size, sharpness, color/mono toggle, saturation control, seed for reproducibility. 6 blend modes: overlay, soft light, hard light, linear light, multiply, screen. Mask support and in-node preview. |
| Frequency Separate | Splits an image into high frequency (texture/detail) and low frequency (color/tone) layers for professional retouching workflows. Two modes: subtract (Photoshop Linear Light style) and divide. Original image pass-through output for easy chaining. |
| Frequency Combine | Recombines edited high and low frequency layers back into a final image. Supports subtract and divide modes to match the separation method used. |
Mask and Background
| Node | Description |
|---|---|
| Remove Background Pro | Advanced AI-powered background removal with 8 rembg models, mask editing tools, multiple preview modes |
| Mask Editor | Stand alone Mask Tools. Refine masks with grow/shrink/blur/fill |
| Apply Mask | Composite image with mask and background options |
| Channel Mask Pro | Extract R/G/B/A channels as separate masks with levels/contrast adjustments and input mask support for advanced Channel Masking |
| Inpaint Mask Pro | Advanced inpaint mask management node. Combines an inpaint mask with an optional silhouette mask to crop sloppy inpaint regions to clean boundaries. Features: invert toggle, expand/shrink, per-mask blur, mask expand/contract, multi-color overlay preview with independent color and opacity per layer. Outputs: image pass-through, processed mask, B&W mask image, and preview image. |
| Mask Composite Pro 2X | Combine 2 masks with per-mask blur, grow/shrink, and opacity. Screen blend for natural mask union. Output selector and invert toggle. |
| Mask Composite Pro 6X | Combine up to 6 masks with per-mask blur, grow/shrink, and opacity. Screen blend for natural mask union. Output selector (all or individual 1-6) and invert toggle. |
(examples)
Blending
| Node | Description |
|---|---|
| Image Blend Pro | Blend images with 15 blend modes (normal, overlay, multiply, screen, soft light, hard light, etc.) |
Analysis
| Node | Description |
|---|---|
| Histogram View | Display RGB/luminance histogram in-node for advanced image setting color display |
| Color Wheel View | Display vectorscope color distribution in-node for advanced image setting color display |
(example)
Utilities
| Node | Description |
|---|---|
| Image <> Mask Switch | Convert between IMAGE and MASK types with a toggle. Image-to-mask converts to grayscale using Rec. 601 luma. Mask-to-image expands to 3-channel RGB. |
| Boolean | Output a true/false value |
| Boolean Invert | Flip boolean value (true to false, false to true) for advanced workflow pipeline and settings switching |
| Boolean Switch Value Output | Output different values based on boolean for advanced workflow pipeline and settings switching |
| Boolean Input Value Switch | Route inputs based on boolean for advanced workflow pipeline and settings switching |
| Boolean Master Switch | Control multiple booleans from one switch for controlling multiple switches with one master switch node |
| Seed Lock | Lock/unlock seed values with a toggle to lock the current seed value, opposed to the standard where the following run seed value is locked |
| Text Notes | Add comments and documentation to your workflow for organization |
| Text String | Simple text input node for passing strings to other nodes |
| Show Text | Display and pass through text output from other nodes for debugging |
| Show Value | Display any value type (float, int, string, bool) in the node for debugging |
| Mega Slider Master Value | Master settings (min/max/step) for connected Mega Sliders |
| Mega Slider X1 | Single universal slider with optional master input and per-slider property overrides |
| Mega Slider X3 | 3 universal sliders with optional master input and per-slider property overrides |
| Mega Slider X6 | 6 universal sliders with optional master input and per-slider property overrides |
| Mega Slider X12 | 12 universal sliders with optional master input and per-slider property overrides |
| Dynamic Value Range | Automatically cycles through a value range on each run (increment/decrement/random) |
| Z-Image Empty Latent Image | Empty latent image with Z-Image optimized resolutions from 512x512 to 2048x2048 (landscape, portrait, square) |
(example)
Features
Blur Pro
- 5 blur types in one node with dynamic slider UI that shows only relevant controls per type
- Gaussian — General-purpose smoothing (radius)
- Surface Blur — Edge-preserving bilateral filter for retouching (radius + threshold). Smooths skin/textures while keeping edges sharp.
- Box Blur — Fast stackable blur with iterations for smooth falloff (radius + iterations)
- Median — Edge-preserving noise removal, kills salt-and-pepper artifacts (radius)
- Motion Blur — Directional blur for movement effects (angle + distance)
- Large radius optimization: radii above 30 auto-downscale for fast processing
- Mask input controls where blur is applied, optional mask blurring toggle
- Strength slider to blend blurred result with original
- In-node preview
Noise Grain Pro
- Realistic film grain with independent controls for size, sharpness, and color
- Grain size (0.5-10) — Controls particle size by generating noise at reduced resolution
- Sharpness (0-1) — Grain definition from soft/diffused to crisp
- Monochromatic toggle — Mono grain vs color grain
- Saturation — Color intensity for color grain mode
- 6 industry-standard blend modes: overlay, soft light, hard light, linear light, multiply, screen
- Soft Light uses the correct W3C/Photoshop formula
- Seed input for reproducible grain
- Mask support for selective application
- In-node preview
Frequency Separation
- Professional retouching workflow: split image into texture and color/tone layers
- Frequency Separate — Takes original image + a blurred version (from Blur Pro or any blur node), outputs high frequency (detail), low frequency (pass-through), and original (pass-through)
- Frequency Combine — Recombines edited layers back into a final image
- Two modes: subtract (Photoshop Linear Light style) and divide (fewer artifacts in dark regions)
- Epsilon control for divide mode safety
- Filter-agnostic: use any blur node upstream (Gaussian for standard, Surface Blur for edge-aware retouching)
Inpaint Mask Pro
- Solves the problem of applying external inpaint masks when the Load Image node doesn't accept mask inputs
- Combines an inpaint mask with a clean silhouette mask to crop sloppy inpaint regions
- Invert toggle for flipping the inpaint mask
- Expand/shrink slider for growing or shrinking the inpaint mask
- Inpaint blur for softening inpaint mask edges
- Mask crop (advanced) with blur and expand/contract controls for the silhouette mask
- Multi-color overlay preview with independent toggle, color, and opacity per layer:
- Inpaint mask: red, light blue, black, white
- Crop mask: lime green, purple, black, white
- Outputs: image pass-through, processed mask, B&W mask image, colored preview image
Mask Composite Pro 2X / 6X
- Combine 2 or 6 masks into one unified mask
- Per-mask controls: blur, grow/shrink, opacity
- Screen blend mode for combining — creates natural mask unions where overlapping areas blend smoothly
- Output selector — output all masks combined, or select an individual mask for isolation
- Invert output toggle to flip the final result
- Handles mismatched mask sizes automatically (resizes to match mask_1)
- 2X variant for simple two-mask workflows, 6X for complex compositing
Image <> Mask Switch
- Toggle between image-to-mask and mask-to-image conversion
- Image-to-mask: converts RGB to grayscale using Rec. 601 luma coefficients (0.299R + 0.587G + 0.114B)
- Mask-to-image: expands single-channel mask to 3-channel RGB
- Both outputs always populated for stable downstream connections
Curves Adjust Pro
- Interactive curve editor with click-to-add, drag-to-move, shift-click-to-remove points
- Separate RGB, Red, Green, Blue channel curve editing
- 17 built-in presets (S-Curve Contrast, Fade, Cross Process, Cinematic, etc.)
- Visual display of all channel curves in RGB mode
- Mask support with invert option
- Spline interpolation for smooth curves
Color Match Blend
- 3 matching methods: statistical, histogram, reinhard
- 10 blend modes: normal, overlay, multiply, screen, soft light, hard light, color, luminosity, darken, lighten
- Separate luminance and color match controls
- Saturation adjustment
Color Adjust Blend
- Optional color reference input with LAB color matching
- Blend modes for color application
- RGB color balance with shadow/midtone/highlight zones
- Works standalone as simple color balance without reference
LUT Apply
- Supports .cube and .3dl LUT formats
- 5 bundled LUTs included (auto-installed to
ComfyUI/input/luts/):- Cinematic_Teal_Orange
- Warm_Tone
- Cool_Tone
- Vintage_Fade
- High_Contrast
- Intensity slider to blend effect
- Add your own LUTs to
ComfyUI/input/luts/
Remove Background Pro
- 8 AI models: u2net, u2netp, u2net_human_seg, u2net_cloth_seg, silueta, isnet-general-use, isnet-anime, sam
- Built-in mask refinement (grow/shrink, blur, threshold)
- Preview modes: masked, mask only, side-by-side, overlay
- Edge feathering for smooth composites
Channel Mask Pro
- Separates image into R, G, B, Alpha channel masks
- Levels adjustments (black point, white point, gamma)
- Contrast and brightness controls
- Input mask support with invert option
- B&W preview with R/G/B/L labels
Selective Color Pro
- Target specific colors: reds, yellows, greens, cyans, blues, magentas, whites, neutrals, blacks
- CMYK adjustment sliders (-100 to +100)
- Smooth RGB-based color detection for natural results
- Reset All button
- Mask support
Text Notes
- Multiline text area for workflow documentation
- Optional title field
- No inputs/outputs - purely organizational
Text String
- Simple text input with multiline support
- Outputs STRING for connecting to other nodes
Show Text
- Display text output from other nodes
- Pass-through output for chaining
Show Value
- Display any value type (float, int, string, bool) in the node
- Accepts any input type for universal debugging
Mega Slider Master Value
- Set min/max/step values in one place
- Connect to any Mega Slider node to control all its sliders
- One master can connect to multiple slider nodes
- Slider UI updates in real-time when master values change
Mega Slider X1 / X3 / X6 / X12
- 1, 3, 6, or 12 universal sliders with individual outputs
- Optional master input: connect Mega Slider Master Value to apply min/max/step to all sliders
- Per-slider overrides: Right-click node → Properties to set individual
slider_N_min,slider_N_max,slider_N_step - Output as float or integer (toggle)
- Sliders snap to step increments when properties are set
Dynamic Value Range
- Automatically cycles through a range of values on each workflow run
- Modes: increment, decrement, random
- On cycle complete: reverse direction or jump to other end
- Outputs: FLOAT, INT, and STRING versions
- Perfect for creating diversity across batch generations
Z-Image Empty Latent Image
- Pre-configured resolutions optimized for Z-Image model
- Landscape, portrait, and square options from 512x512 to 2048x2048
- Outputs LATENT, WIDTH, and HEIGHT for flexible workflow connections
- Configurable batch size
Changelog
v2.1.2
- Fix: Frequency Separate — locked to correct Photoshop formula (Scale 2, Offset 128, Subtract), removed mode/epsilon options
- Fix: Frequency Combine — locked to Linear Light blend, added opacity slider, removed mode/epsilon options
- Update: Blur Pro — removed distance and iterations parameters, motion blur uses radius, box blur single pass
- Update: Inpaint Mask Pro — removed SEGS support (simplified), inpaint_mask now required
v2.1.1
- New Node: Mask Composite Pro 2X — combine 2 masks with per-mask blur, grow/shrink, opacity, screen blend, output selector, invert toggle
- New Node: Mask Composite Pro 6X — combine up to 6 masks with same features
- Update: Inpaint Mask Pro — added inpaint expand/shrink slider, multi-color overlay with per-layer display settings, removed SEGS (simplified to image + mask inputs)
- Update: Blur Pro — type-specific sliders marked as advanced for cleaner default view
v2.1.0
- New Node: Blur Pro — 5 blur types (Gaussian, Surface, Box, Median, Motion) with dynamic UI, mask support, strength blending, large radius optimization, in-node preview
- New Node: Noise Grain Pro — Film grain generator with size, sharpness, color/mono, saturation, 6 blend modes, seed, mask support
- New Node: Frequency Separate — Split image into high/low frequency layers for professional retouching
- New Node: Frequency Combine — Recombine frequency layers with subtract/divide modes
- New Node: Inpaint Mask Pro — Advanced inpaint mask management with mask cropping, SEGS support, multi-color overlay preview
- New Node: Image <> Mask Switch — Toggle conversion between IMAGE and MASK types
- New Category: Filters (Blur Pro, Noise Grain Pro, Frequency Separate/Combine)
v2.0.5
- Fix: Updated pyproject.toml version to match release
- Fix: Corrected node count
v2.0.4
- New Node: Z-Image Empty Latent Image with optimized resolutions for Z-Image model
v2.0.3
- New Nodes: Show Value, Mega Slider Master Value, Mega Slider X1/X3/X6/X12, Dynamic Value Range
- Mega Slider Master Value: Set min/max/step for connected Mega Sliders
- Mega Sliders: Universal slider banks with optional master input and per-slider settings via right-click → Properties
- Dynamic Value Range: Auto-cycling values for batch diversity (increment/decrement/random modes)
- Show Value: Display any value type in-node for debugging
v2.0.2
- New Nodes: Text Notes, Text String, Show Text utility nodes
- Organized Categories: Nodes now grouped into subcategories (Color, Mask, Blend, Analysis, Util)
v2.0.1
Updated Node Settings, Resolved Display Issues, Fixed Several Node structures.
v2.0.0
Major Overhaul, Node Additions, and Improvements
- New Nodes: LUT Apply, Channel Mask Pro, Selective Color Pro, Boolean Invert
- Bundled LUTs: 5 color grading LUTs included with auto-install
- Curves Adjust Pro: Added mask support, improved curve display showing all channels in RGB mode
- Channel Mask Pro: Added input mask support, levels/contrast adjustments, improved B&W preview
- Unified Category: All nodes now appear under single "MachinePaintingNodes" folder
- Selective Color Pro: Added Reset All button
- Analysis Nodes: Improved auto-scaling for Histogram and Color Wheel views
- Code Cleanup: Removed deprecated nodes, standardized categories
v1.0.0
- Initial release with color adjustment, blending, and boolean utility nodes
License
MIT License - See LICENSE for details.
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Tags
comfyui comfyui-nodes custom-nodes color-grading color-correction curves levels lut lookup-table photoshop image-processing image-editing background-removal rembg masking mask-editor channel-mixer histogram vectorscope blend-modes compositing stable-diffusion ai-art generative-art film-emulation cinematic color-matching hsl cmyk selective-color boolean-logic workflow utilities sliders dynamic-values blur gaussian-blur surface-blur motion-blur bilateral-filter film-grain noise frequency-separation retouching inpainting segs