Angular 20, released in May 2025, marks a significant advancement in the Angular framework, introducing performance enhancements, developer-centric features, and architectural refinements. This post delves into the new features of Angular 20, contrasts them with Angular 19, and outlines the major benefits of upgrading.
Key Features in Angular 20
⚡ Zoneless Change Detection
Developer preview of zoneless change detection, moving away from Zone.js.
🧩 Selectorless Components
Import components directly into templates without using selectors.
🧪 Enhanced Testing Facilities
The default test runner options now include Web Test Runner, Vitest, and Jest, with Karma deprecated.
⚙️ Incremental Hydration & Flexible Rendering
Stabilized incremental hydration for server-side rendering (SSR).
🔄 Reactive API Improvements
Stabilization of the effect, linkedSignal, toSignal API and a preview of resource APIs for handling async data.
♿ Accessibility Primitives
New built-in utilities aimed at improving accessibility.
🏷️ Tagged Template Literals in Templates
Full support for tagged template literals in Angular templates.
🔁 Two-Way Binding for Dynamic Components
Support for two-way data binding with dynamically created components.
🤖 AI-Assisted Development Tools
AI-powered linting and CLI recommendations to assist with development.
Differences Between Angular 19 and Angular 20
Feature Angular 19 Angular 20 Standalone Components Default behavior Continued support with enhancements Reactivity Introduction of linkedSignal and resource() APIs Further optimizations in reactivity TypeScript Support Up to TypeScript 5.6 Improved TypeScript support with better type checking CLI Enhancements AI-driven suggestions and automation New commands and options for streamlined development Security AutoCSP for content security policies Built-in protections against XSS and CSRF, with CSP support Testing Utilities Introduction of new testing tools Enhanced TestBed and Protractor integration
Major Benefits of Angular 20
- Performance Optimization: The refined Ivy compiler and improved reactivity lead to faster load times and efficient memory usage.
- Enhanced Developer Productivity: Updated CLI commands and better TypeScript support streamline the development workflow.
- Seamless Deployment: Improved integration with PaaS providers and the Angular Deploy tool simplify the deployment process.
- Robust Security: Built-in protections against common vulnerabilities and CSP support enhance application security.
- Improved Testing: Enhanced testing utilities facilitate easier and more reliable application testing.
