Stable Diffusion WebUI Forge
Stable Diffusion WebUI Forge is free, open-source software for generating and editing images.
What Stable Diffusion WebUI Forge is
Stable Diffusion WebUI Forge is free, open-source software for generating and editing images. It supports text-to-image creation, reference images and image editing, with PNG, JPG, JPEG, WebP, AVIF and GIF output. Forge is built on Stable Diffusion WebUI and aims to simplify development, manage resources, speed inference and explore experimental features. Its Gradio-based interface is available through one-click packages that include Git and Python, with Windows launch scripts, shell scripts, a macOS environment script and source-install instructions. Components include GPU memory management, LoRAs, ControlNets, IP-Adapters, Instant-IDs, reference-only methods and extensions. Native support covers several Flux BitsandBytes and GGUF variants, with GPU weight and swap controls. Txt2img and img2img API endpoints are listed as normal. The project is under construction, and its license is AGPL-3.0.
Good
- Free and open-source
- Text-to-image and image editing
- Supports reference images
- Multiple image output formats
- One-click package includes Git and Python
Watch out
- Project documentation and UI may change
- Some Flux and ControlNet features are unavailable
- Microsoft Surface pressure support is broken
- Improved Flux API support remains pending
Who it suits
It suits users wanting self-installed image generation and editing with APIs, model extensions and multiple operating-system options. It is also relevant to developers working with existing Stable Diffusion checkpoints.
Verdict
Forge offers a broad, self-hosted image workflow with generation, editing, APIs and extension support. Its under-construction status and listed compatibility gaps require attention before adoption.
Plans and prices
From Stable Diffusion WebUI Forge's own pricing page, checked 12 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | self-installed software · one-click package includes Git and Python · CUDA 12.1 + PyTorch 2.3.1 recommended |
The facts
Each one read from Stable Diffusion WebUI Forge's own pages, with the date it was checked.
What it does
- Advanced installation
- Users proficient with Git can install Forge as another SD-WebUI branch and reuse their existing checkpoints and extensions.checked 12 Oct 2026
- API
- The README lists txt2img and img2img API endpoints as normal in its status table, with improved Flux support pending.checked 12 Oct 2026
- API access
- Yeschecked 20 Sep 2026
- API status
- The README marked txt2img and img2img API endpoints normal, with improved Flux support pending, in a status entry last tested in August 2024.checked 12 Oct 2026
- Compatibility limits
- The README marks ControlNets Union and Flux as not yet implemented, OFT LoRAs as broken pending a fix, and Microsoft Surface canvas pressure support as broken pending a fix.checked 12 Oct 2026
- Compatibility status
- The README's manually tested status table says Microsoft Surface canvas touch pressure support was broken pending a fix, and Flux and Union ControlNets were not yet implemented; those entries were last tested in 2024.checked 12 Oct 2026
- Extension ecosystem
- The project maintains a discussion thread for extension makers to list extensions and replacements for Forge.checked 12 Oct 2026
- Flux support
- The README states that several Flux BitsandBytes and GGUF variants are natively supported with GPU weight and swap controls, and that some variants support LoRA.checked 12 Oct 2026
- Image editing
- Yeschecked 20 Sep 2026
- Image workflows
- The README lists txt2img and img2img API endpoints, ControlNet, IP-Adapters, Instant-IDs, reference-only methods, and integrated extensions among its status-tested components.checked 12 Oct 2026
- Installation
- The README offers a one-click installation package that includes Git and Python.checked 12 Oct 2026
- Integration
- The README says Forge can be installed as another SD-WebUI branch to reuse existing checkpoints and extensions.checked 12 Oct 2026
- Interface
- The project says Stable Diffusion WebUI is based on Gradio.checked 12 Oct 2026
- License
- The repository identifies its license as AGPL-3.0.checked 12 Oct 2026
- Models and extensions
- The README lists LoRAs, ControlNets, IP-Adapters, Instant-IDs, reference-only methods, and integrated and popular extensions among its components.checked 12 Oct 2026
- Model support
- The README says Flux BitsandBytes NF4 and several GGUF quantizations are natively supported, with LoRA support for specified NF4 and GGUF variants.checked 12 Oct 2026
- Output formats
- PNG,JPG,JPEG,WebP,AVIF,GIFchecked 20 Sep 2026
- Pricing
- The opened project page describes downloadable installation packages but does not state a price or list paid plans.checked 12 Oct 2026
- Project status
- The README says Forge is under construction and that its documentation, UI, and functionality may change with updates.checked 12 Oct 2026
- Purpose
- Forge is a platform built on Stable Diffusion WebUI and Gradio to ease development, optimize resource management, speed up inference, and study experimental features.checked 12 Oct 2026
- Reference images
- Yeschecked 20 Sep 2026
- Resource management
- The README lists a GPU memory management system among Forge components it manually tested.checked 12 Oct 2026
- Security
- The repository's Security page is titled Overview and provides no security or compliance details in the opened page.checked 12 Oct 2026
- Support
- The maintainer invites users to open issues for problems and says they will check them every several days.checked 12 Oct 2026
Alternatives to Stable Diffusion WebUI Forge
- 1
FLUX
Free planOpen sourceWebAPILinuxmacOS9.1$0.01 one-time - 2
Recraft
Free planAndroidiOSWebAPI9.0Free plan - 3
Tensor.Art
Free planAndroidiOSWebAPI8.8Free plan - 4
Sogni
Free planAndroidiOSWebAPI8.8From $20 a month - 5
Adobe Firefly
Free planAndroidiOSWebAPI8.6Free plan - 6
Dream by WOMBO
Free planAndroidiOSWebAPI8.6Free plan