AngularDart SEO #

Complete SEO and meta tag management for AngularDart applications.

Part of the AngularDart ecosystem.

Features #

Dynamic meta tags - Update title, description, keywords, and more at runtime
Open Graph support - Rich social media previews for Facebook, LinkedIn, etc.
Twitter Cards - Beautiful Twitter previews with images and descriptions
JSON-LD - Structured data for rich search results
Canonical URLs - Prevent duplicate content issues
Annotations - Declarative SEO configuration with @SeoConfig
Directives - Template-based SEO with seoTitle, seoMeta, etc.
Title service - Advanced title management with templates and history

Installation #

Add to your pubspec.yaml:

dependencies:
  angulardart: ^8.0.0
  angulardart_seo: ^1.0.0

Quick Start #

1. Add providers to your app #

import 'package:angulardart/angulardart.dart';
import 'package:angulardart_seo/angulardart_seo.dart';

@GenerateInjector([
  seoProviders,
])
final InjectorFactory appInjector = appInjector$Injector;

void main() {
  runApp(appInjector);
}

2. Use in your components #

import 'package:angulardart/angulardart.dart';
import 'package:angulardart_seo/angulardart_seo.dart';

@Component(
  selector: 'about-page',
  template: '<h1>About Us</h1>',
)
class AboutPageComponent implements OnInit {
  final SeoService _seo;

  AboutPageComponent(this._seo);

  @override
  void ngOnInit() {
    _seo.setPageSeo(
      title: 'About Us',
      description: 'Learn more about our company and mission',
      url: 'https://example.com/about',
      image: 'https://example.com/about-image.jpg',
    );
  }
}

Usage Guide #

Setting the Title #

// Simple title
seoService.setTitle('My Page Title');

// With TitleService (advanced)
titleService
  ..setTemplate('{{page}} | {{site}}')
  ..setSiteName('My Website')
  ..setTitle('About Us');
// Result: "About Us | My Website"

Meta Tags #

// Standard meta tags
seoService.setMeta('description', 'Page description');
seoService.setMeta('keywords', 'angular, dart, seo');
seoService.setMeta('author', 'John Doe');

// Multiple at once
seoService.setMetas({
  'description': 'Page description',
  'keywords': 'angular, dart, seo',
  'author': 'John Doe',
});

// Robots
seoService.setRobots('index, follow');
seoService.setRobots('noindex, nofollow');

Open Graph Tags #

// Individual tags
seoService.setOgTitle('My Page Title');
seoService.setOgDescription('Page description');
seoService.setOgImage('https://example.com/image.jpg');
seoService.setOgUrl('https://example.com/page');
seoService.setOgType('article');
seoService.setOgSiteName('My Website');
seoService.setOgLocale('en_US');

// Generic method
seoService.setOgTag('custom_property', 'value');

// Multiple at once
seoService.setOgTags({
  'title': 'My Page Title',
  'description': 'Page description',
  'image': 'https://example.com/image.jpg',
});

Twitter Cards #

// Card type
seoService.setTwitterCard('summary_large_image');

// Card content
seoService.setTwitterTitle('My Page Title');
seoService.setTwitterDescription('Page description');
seoService.setTwitterImage('https://example.com/image.jpg');
seoService.setTwitterSite('@mysite');
seoService.setTwitterCreator('@johndoe');

// Generic method
seoService.setTwitterTag('custom_name', 'value');

Canonical URLs #

// Set canonical URL
seoService.setCanonical('https://example.com/preferred-url');

// Remove canonical
seoService.removeCanonical();

Alternate Languages #

// Add alternate language
seoService.addAlternateLanguage(
  href: 'https://example.com/fr/page',
  hreflang: 'fr',
);

// Remove alternate
seoService.removeAlternateLanguage('fr');

JSON-LD Structured Data #

// WebSite
seoService.setJsonLd(JsonLd.webSite(
  name: 'My Website',
  url: 'https://example.com',
  description: 'Website description',
  logo: 'https://example.com/logo.png',
));

// Organization
seoService.setJsonLd(JsonLd.organization(
  name: 'My Company',
  url: 'https://example.com',
  logo: 'https://example.com/logo.png',
  email: 'contact@example.com',
  telephone: '+1234567890',
  sameAs: [
    'https://facebook.com/mycompany',
    'https://twitter.com/mycompany',
  ],
));

// Article
seoService.setJsonLd(JsonLd.article(
  headline: 'Article Title',
  url: 'https://example.com/article',
  description: 'Article description',
  image: 'https://example.com/article-image.jpg',
  datePublished: '2024-01-01',
  dateModified: '2024-01-02',
  authorName: 'John Doe',
  authorUrl: 'https://example.com/author/john',
  publisherName: 'My Website',
  publisherLogo: 'https://example.com/logo.png',
));

// Breadcrumbs
seoService.setJsonLd(JsonLd.breadcrumbList([
  {'name': 'Home', 'url': 'https://example.com'},
  {'name': 'Products', 'url': 'https://example.com/products'},
  {'name': 'Widget', 'url': 'https://example.com/products/widget'},
]));

// Custom JSON-LD
seoService.setJsonLd(JsonLd(
  data: {
    '@context': 'https://schema.org',
    '@type': 'Product',
    'name': 'My Product',
    'description': 'Product description',
    'offers': {
      '@type': 'Offer',
      'price': '29.99',
      'priceCurrency': 'USD',
    },
  },
  id: 'product',
));

// Remove JSON-LD
seoService.removeJsonLd('product');
seoService.removeAllJsonLd();

Complete Page SEO #

// Set all SEO at once
seoService.setPageSeo(
  title: 'Page Title',
  description: 'Page description',
  url: 'https://example.com/page',
  image: 'https://example.com/image.jpg',
  type: 'article',
  siteName: 'My Website',
  locale: 'en_US',
  twitterCard: 'summary_large_image',
  twitterSite: '@mysite',
  twitterCreator: '@johndoe',
  canonical: 'https://example.com/preferred-url',
  robots: 'index, follow',
);

Using Annotations #

Static SEO with @SeoConfig #

@Component(
  selector: 'about-page',
  template: '<h1>About Us</h1>',
  directives: [seoDirectives],
)
@SeoConfig(
  title: 'About Us',
  description: 'Learn more about our company',
  keywords: 'about, company, team',
  ogImage: 'https://example.com/about.jpg',
  twitterCard: 'summary_large_image',
)
class AboutPageComponent {}

Dynamic SEO with SeoAware #

@Component(
  selector: 'product-page',
  template: '<h1>{{product.name}}</h1>',
  directives: [seoDirectives],
)
@DynamicSeo()
class ProductPageComponent implements OnInit, SeoAware {
  final SeoService _seo;
  Product? _product;

  ProductPageComponent(this._seo);

  @override
  void ngOnInit() async {
    _product = await loadProduct();
  }

  @override
  SeoConfig get seoConfig => SeoConfig(
    title: _product?.name ?? 'Product',
    description: _product?.description,
    ogImage: _product?.imageUrl,
  );
}

Using Directives #

Title Directive #

<h1 [seoTitle]="pageTitle">{{pageTitle}}</h1>

Meta Directive #

<div seoMeta="description" [seoContent]="pageDescription"></div>

Open Graph Directive #

<div seoOg="title" [seoOgContent]="pageTitle"></div>
<div seoOg="image" [seoOgContent]="pageImage"></div>

Twitter Directive #

<div seoTwitter="title" [seoTwitterContent]="pageTitle"></div>

Canonical Directive #

<link seoCanonical="https://example.com/page">

TitleService #

Advanced title management with templates and history.

// Configure template
titleService
  ..setTemplate('{{page}} | {{site}}')
  ..setSiteName('My Website')
  ..setSeparator(' - ')
  ..setMaxLength(60);

// Set titles
titleService.setTitle('About Us');
// Result: "About Us | My Website"

titleService.setTitleWithCategory('Widget Pro', 'Products');
// Result: "Widget Pro - Products | My Website"

titleService.setArticleTitle('How to Use AngularDart', 'Blog');
// Result: "How to Use AngularDart - Blog | My Website"

titleService.setSearchTitle('angular dart');
// Result: "Search results for: angular dart | My Website"

titleService.setErrorTitle(404, 'Page Not Found');
// Result: "404 - Page Not Found | My Website"

// Title history
titleService.goBack(); // Go to previous title
titleService.clearHistory();

Best Practices #

1. Set SEO Early #

Set SEO values in ngOnInit to ensure they're applied before the page is rendered:

@override
void ngOnInit() {
  seoService.setPageSeo(...);
}

2. Use Canonical URLs #

Always set canonical URLs to prevent duplicate content issues:

seoService.setCanonical('https://example.com/preferred-url');

3. Optimize Title Length #

Keep titles under 60 characters for optimal display in search results:

titleService.setMaxLength(60);

4. Use Structured Data #

Add JSON-LD for rich search results:

seoService.setJsonLd(JsonLd.article(...));

5. Test Your SEO #

Use tools like:

API Reference #

See the API documentation for complete API reference.

Requirements #

Dart SDK >= 3.0.0
AngularDart >= 8.0.0

angulardart - Core framework
angulardart_router - Client-side routing
angulardart_prerender - Prerendering for SEO

License #

MIT License

angulardart_seo 1.0.2 angulardart_seo: ^1.0.2 copied to clipboard

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