Scumble

Scumble is a free open-source desktop image editor that performs AI inpainting and generates colour-matched layers.

Scumble is an AI-native desktop image editor built for ComfyUI and various AI models. Users can select parts of pictures, draw boxes on canvases, and prompt the system to generate results that return as independent, colour-matched layers. It supports inputs and outputs like PSD and OpenRaster files with layers and masks, and runs on local or remote ComfyUI instances, Comfy Cloud, or API keys for providers like Black Forest Labs, OpenAI, Google, fal.ai, Replicate, and OpenRouter. The editor features a tile engine with compiled Rust kernels for large documents, GPU-accelerated film looks and filters, and an MCP server for agentic control. It is designed for digital artists and creators who want non-destructive AI image generation and editing.

Scumble at a glance

Best for: Designer, Software engineer
Runs on: Windows
Pricing: Free software
Released: October 2026
Category: AI image tool
Website: github.com/denrakeiw/scumble

Key features

Inpaint, edit, upscale, and generate AI images
Every edit returns as an independent layer
Draw boxes and use reference pictures with prompts
Connect to local or remote ComfyUI instances
Support for PSD and OpenRaster file exports
GPU-accelerated filters and film looks
MCP server integration for external agents

Use it for

Inpainting specific parts of an image
Generating new elements within drawn boxes
Upscaling large documents without freezing
Editing layered PSD and OpenRaster files

Companions

Tools that articles about Scumble recommend using with it, each with its job.

ComfyUI — Built to work with ComfyUI.
ComfyUI Manager
ComfyUI Impact Pack — Face detection, segmentation and detail fixing.
ControlNet Aux — Preprocessors for pose, depth and edge control.
Ultimate SD Upscale — High-resolution tiled upscaling.
VideoHelperSuite — Loads and combines video frames for animation workflows.

Alternatives to Scumble

LayerShop — Generative AI built into a native image editor with local model execution.
Modly — Generates 3D models locally on your GPU for free without cloud processing.
ComfyArt — Runs fully locally on ComfyUI with no account or cloud required.
Krea — Every major image and video model plus a 21K enhancer in one tool
SD.Next — Supports dozens of models and advanced quantization for low VRAM usage.
PhotoCraft Hub — Runs natively on the GPU and handles real PSD files without conversion.
Photoshop MCP — Enables AI models to inspect, edit, and export Photoshop files locally.
Palette From Image AI — Runs completely offline with regional awareness and twelve export formats.
Krita AI Diffusion — Enables precise control and efficient AI workflows inside Krita.
Easy Diffusion — Hassle-free 1-click installation with no technical knowledge required.
Dream Textures — Generates textures and concept art directly inside Blender.
ABrush — Generate and edit with many AI models without leaving Photoshop

All Scumble alternatives