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Stable Diffusion Photopea

Stable Diffusion Photopea is an open-source Photopea plugin that connects to a Stable Diffusion backend through the AUTOMATIC1111 API, bringing image generation, image-to-image editing and canvas-oriented workflows into Photopea.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Stable Diffusion Photopea — OpenViST project profile in Image & Video AI.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it when generation or Stable Diffusion-based edits need to sit directly alongside work on a Photopea canvas, and an API-enabled backend is available.

Who it is for

  • Photopea users who want Stable Diffusion generation within an image-editing workflow.
  • Users of AUTOMATIC1111-compatible backends who can configure API and cross-origin access.
  • Artists using canvas selections, inpainting or ControlNet guidance to direct generated image edits.

Documented uses

  • Generate images from within Photopea using a configured Stable Diffusion backend.
  • Render on the canvas in real time using the documented LCM setup, including a selected canvas area.
  • Use a canvas reference range for image-to-image processing.
  • Scale a small inpainting region for processing and return the resized result to its original location.
  • Overlay ControlNet maps, such as pose and line-art guidance, while composing an image.
Before you choose

Requirements & limits

The project is identified as open source under the GPL-3.0 license. The documented installation uses Photopea’s plugin panel and requires a separately configured backend.

  • The plugin depends on an AUTOMATIC1111 API-compatible backend; backend API and CORS settings are part of setup.
  • SDNext users are given a distinct CORS configuration.
  • LCM real-time rendering requires the project’s LCM configuration and an LCM LoRA in A1111.
  • The repository lists Vue as the primary language and GPL-3.0 as the license.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Install the plugin with an API-enabled backend

Configure the backend for plugin requests, then add Stable Diffusion Photopea from the Photopea plugin panel.

Before you start

  • Photopea
  • An AUTOMATIC1111-compatible Stable Diffusion WebUI backend
  • For SDNext users, the README specifies a separate CORS argument

Steps

  1. For AUTOMATIC1111, add --api --cors-allow-origins https://huchenlei.github.io to COMMANDLINE_ARGS in webui-user.bat; for SDNext, use --cors-origins https://huchenlei.github.io.

  2. In Photopea, open Window > Plugin.

  3. Search for stable-diffusion-ps-pea and install it.

Expected outcome

The plugin is added in Photopea and configured to communicate with the backend through its API.

Guide limitations

  • The backend must be configured to allow API access and requests from the plugin origin.
  • These instructions cover installation; they do not establish that a particular backend setup has been tested.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
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Sources checked
18 October 2026
Original website title
huchenlei/stable-diffusion-ps-pea · Official homepage title · retained in its source language
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