1. Executive Summary Adobe UXP (Unified Extensibility Platform) is a modern, cross-application framework for building plugins, extensions, and integrations for Adobe's creative suite, including Photoshop, Illustrator, InDesign, XD, and Premiere Pro (via UXP for video). Developed as the successor to the legacy CEP (Common Extensibility Platform) and Flash-based panels, UXP provides a unified, secure, high-performance, and future-proof environment based on modern web standards (HTML5, CSS3, JavaScript, and React).
The platform aims to give developers a single codebase that runs across multiple Adobe apps, while offering deeper integration, better performance, and support for modern UI paradigms like headless plugins and scriptable automation. | Feature | Legacy CEP | Adobe UXP | |---------|-----------|------------| | Rendering Engine | Chromium Embedded Framework (CEF) | Modern Chromium (updated with Adobe apps) | | UI Tech | HTML/JS, Node.js | HTML/JS, Node.js, React (recommended) | | Security | Permissive (full Node access) | Sandboxed with explicit permissions | | Cross-app Support | Varies | Unified APIs and manifests | | Performance | Moderate | High (optimized for creative workloads) | | Future Roadmap | Maintenance only | Active development | adobe uxp
Example manifest.json permissions:
// Register menu item app.menus.addMenuItem("Plugins", "New Layer from UXP", createNewLayer); import React, useState from "react"; import app from "photoshop"; export const Panel = () => ; 6. Security & Permissions Model UXP implements a declarative permission system (like Android or browser extensions). Developers must request permissions in manifest.json . Users approve at install time. The platform aims to give developers a single