Angular vs. AngularJS: Key Differences

AngularJS and Angular are separate generations of Google’s web framework. AngularJS refers to version 1.x. Angular refers to the framework introduced with version 2.0 and later. Modern Angular is not simply a renamed AngularJS release: the two use different programming models and have separate upgrade guidance. Angular’s versioning documentation makes this distinction explicit.

For a new application, evaluate modern Angular rather than AngularJS. AngularJS support ended in January 2022, according to the official AngularJS project site. If you maintain an existing AngularJS application, treat the choice as a migration and maintenance decision, not as a routine upgrade between Angular versions.

Angular vs. AngularJS at a glance

Area	AngularJS	Modern Angular
Version family	Angular 1.x	Angular 2.0 and later
Core programming model	HTML directives, controllers, data binding, dependency injection, and plain JavaScript objects	Components, dependency injection, and newer capabilities such as signals
Rendering capabilities	Designed for dynamic web applications using its directive and binding model	Documents server-side rendering (SSR) and static site generation (SSG), among other capabilities
Support	Official support ended in January 2022	Maintained with a release policy; major releases typically receive 12 months of active support and 12 months of LTS
Upgrade path	Separate AngularJS upgrade guidance	Version updates and feature migrations use Angular’s own update and migration tooling

The Angular release policy and supported-version table can change. Check the live version and support information before choosing a version; do not rely on an old supported-version snapshot.

What is AngularJS?

AngularJS is the original Angular framework, in the 1.x version family. Its official overview describes it as extending HTML’s vocabulary for dynamic applications. Developers commonly express behavior with directives in markup, connect views to models through data binding, organize logic in controllers, and use dependency injection to supply services. Models are commonly plain JavaScript objects.

These terms describe a different framework generation from modern Angular. AngularJS code and modern Angular code do not share a simple, automatic source-level upgrade path.

What is modern Angular?

Modern Angular is the framework generation beginning at Angular 2.0. Its documented model centers on components and dependency injection. Current Angular documentation also describes signals and support for server-side rendering and static site generation. Those capabilities help explain the framework’s direction; they do not establish that Angular will be faster for every application or workload.

Angular’s migration documentation covers changes within modern Angular, including migrations for standalone components and built-in control flow. These migrations should not be confused with moving an AngularJS application to modern Angular.

Key differences developers should understand

1. They use different application models

AngularJS applications commonly organize UI behavior around directives, controllers, data binding, and JavaScript-object models. Modern Angular applications organize UI around components and use modern Angular’s own APIs and conventions. Similar names and shared history do not mean that a controller or directive can simply be carried over as a modern Angular component.

2. Their support situations differ

AngularJS support officially ended in January 2022. Modern Angular continues to have releases and a published support policy. Angular says major releases are typically supported for 24 months: 12 months of active support followed by 12 months of LTS. Check the live policy for the current release table and dates.

3. Their migration guidance is separate

Modern Angular offers tooling to migrate between versions and adopt newer framework features. Angular’s update documentation directs AngularJS users to a separate upgrade guide. That guide’s detailed steps are not reproduced here because the accessible source did not provide verifiable instructions during research. Confirm the current official guidance before planning a migration.

4. Capability lists are not performance guarantees

Modern Angular documents SSR, SSG, and signals. These are relevant architectural capabilities, but performance depends on the application, implementation, deployment, and workload. Choose based on requirements and measure your own application rather than inferring a universal speed advantage from a feature list.

Which framework should you choose?

Starting a new project: Evaluate modern Angular if its component model and capabilities fit your team and requirements. AngularJS has ended support.
Maintaining an AngularJS application: Identify current security, compatibility, and maintenance constraints. Decide whether to continue short-term maintenance or plan a migration based on the application’s needs and available resources.
Already using modern Angular: Follow Angular’s current update guidance and use the migrations that apply to your target release.
Comparing an old tutorial with current docs: Check whether it targets AngularJS 1.x or Angular 2.0 and later. The distinction changes the APIs and architecture the tutorial expects.

How to approach an AngularJS to Angular migration

A migration is a project-level decision because the frameworks have different programming models. The sources used for this article establish that a separate official AngularJS upgrade path exists, but they do not support a detailed, prescriptive conversion sequence. Use this checklist to prepare without assuming that a tool can translate the application automatically:

Inventory the application. Record its AngularJS version, major dependencies, custom directives, controllers, routes, build and deployment setup, and tests.
Define constraints. Document required browser support, release deadlines, integrations, maintenance capacity, and any behavior that must remain stable.
Review the official upgrade guidance. Start from Angular’s update page and follow its AngularJS-specific link. Verify the current guide and its prerequisites before committing to an approach.
Plan in terms of application boundaries. Identify what can be changed independently and how the team will validate behavior across any transition. Let the official guide and the application’s architecture determine the implementation sequence.
Estimate and validate incrementally. Use representative application areas to surface dependency and integration risks early. Define acceptance checks for user-visible behavior, build, and deployment.

Do not treat Angular’s standalone-component or built-in-control-flow migrations as AngularJS conversion tools; those are documented modern Angular migrations.

Check a web page while comparing framework output

If you need to capture rendered pages from an AngularJS and an Angular application for a visual review, a browser automation setup can take screenshots locally. This is useful when you need browser control or want to integrate capture into existing scripts.

DIY capture with Playwright

The following Node.js example opens a page and saves a full-page PNG. Install Playwright and its browser first using the official Playwright setup instructions.

const { chromium } = require('playwright');

(async () => {
  const browser = await chromium.launch({ headless: true });
  const page = await browser.newPage({ viewport: { width: 1440, height: 900 } });
  try {
    await page.goto('https://example.com', {
      waitUntil: 'networkidle',
      timeout: 30000
    });
    await page.screenshot({ path: 'page.png', fullPage: true });
  } finally {
    await browser.close();
  }
})();

Replace the URL with your application’s publicly reachable page. For applications that keep network connections open, such as those using long polling, networkidle may never occur; use a specific readiness selector or an appropriate load event instead. Set a timeout and close the browser in a finally block so failed navigations do not leave a browser process running.

Or skip the browser setup

ScreenshotNeo is a website screenshot API and MCP server. One GET request can return a PNG, JPEG, WebP, or PDF. Its capture flow accepts cookie and consent banners like a visitor, then removes more than 60 known consent platforms, newsletter popups, and chat widgets; each step can be turned off. Bot checks and CAPTCHAs, blank pages, timeouts, failed loads, and cache hits cost nothing, and the response identifies the page verdict and billing status in headers. An MCP server provides take_screenshot, get_page_info, and capture_pdf tools for AI agents.

See the ScreenshotNeo API docs for request options.

cURL

curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webp

Python

import requests

r = requests.get(
    "https://api.screenshotneo.com/v1/shot",
    params={"access_key": "YOUR_API_KEY", "url": "https://stripe.com"},
    timeout=90,
)
r.raise_for_status()
open("shot.webp", "wb").write(r.content)

Node.js

const q = new URLSearchParams({ access_key: 'YOUR_API_KEY', url: 'https://stripe.com' });
const res = await fetch(`https://api.screenshotneo.com/v1/shot?${q}`);
if (!res.ok) throw new Error(`Screenshot request failed: ${res.status}`);
const bytes = new Uint8Array(await res.arrayBuffer());
await import('node:fs/promises').then(fs => fs.writeFile('shot.webp', bytes));

Free use includes 1,000 screenshots per month with no card. Paid plans start at $5 for 3,000 screenshots; all features are on every plan, and yearly billing gives two months free. Sign up for 1,000 free screenshots a month, with no card.

Troubleshooting framework comparisons and captures

Problem	Likely cause	What to do
A tutorial’s code does not match your project	It targets AngularJS 1.x while the project uses modern Angular, or vice versa	Check the tutorial’s framework generation and version before adapting its examples.
You cannot find AngularJS in the current Angular update flow	AngularJS has a separate upgrade path from modern Angular version updates	Start from the official update documentation and verify its AngularJS-specific guidance.
A capture times out while the page still appears to load	The page may keep network activity open, or the readiness condition may not fit the application	Use a selector or load condition that indicates the content you need is ready; set an explicit timeout.
The saved screenshot is blank or incomplete	The capture may happen before client rendering or required content finishes loading	Wait for a meaningful page element before capturing, and confirm that the URL is reachable from the capture environment.
The screenshot file contains an error response	The HTTP request may have failed or returned an API error	Check the status and response headers before saving the body as an image; verify the URL and credentials.

Performance, reliability, and cost considerations

Framework performance: The cited framework documentation describes capabilities, not a universal Angular-versus-AngularJS benchmark. Test representative pages and workflows in the environment that matters to your users.
Migration reliability: Verify behavior at application boundaries and review the current official AngularJS upgrade guidance. Do not infer migration details from modern Angular schematics.
Screenshot reliability: A browser capture depends on reachability, page readiness, and the selected wait condition. Use explicit timeouts and check response status when scripting captures.
Capture cost: DIY Playwright requires you to run and maintain browser automation. ScreenshotNeo offers 1,000 shots monthly free with no card; paid tiers are $5 for 3,000, $15 for 15,000, $39 for 60,000, $99 for 250,000, and $249 for 1,000,000. Yearly billing gives two months free. Its stated billing policy excludes bot checks/CAPTCHAs, blank pages, timeouts, failed loads, and cache hits.

FAQ

Is AngularJS the same as Angular?

No. AngularJS is the 1.x generation; Angular is the separate framework generation from version 2 onward.

Can I use AngularJS for a new project?

AngularJS support ended in January 2022. For a new project, evaluate a currently maintained framework and check Angular’s live support policy if considering modern Angular.

Does Angular’s migration tooling convert AngularJS applications?

The migration documentation cited here describes migrations within modern Angular. AngularJS users have separate upgrade guidance; verify that guide for the current supported approach.

Does modern Angular guarantee a faster application?

No such guarantee follows from the framework capability descriptions. Performance depends on the application and how it is built and deployed.