Master Angular SEO Guide: Tips, Tricks & Challenges

Angular SEO Guide: All You Need to Know

  • Author
    Saurabh Garg
  • Date
    May 14, 2024
  • Read Time
    8 Min


    • Understanding the Basics
    • Understanding the Angular Ecosystem
    • Understanding search engine crawlers and SEO
    • Search engine optimization for conventional web applications
    • Server-side rendering (SSR)
    • Client-side rendering (CSR)
    • Dynamic Rendering (DR)
    • Search engine optimization for single-page applications (SPAs)
    • Advantages of a single-page application
    • Why do we need Angular Universal?
    • Building search-friendly web pages using Angular SEO
    • Pre-rendering and its importance
    • Server-side rendering of HTML with Angular
    • Frequently Asked Questions

Many people have been talking about Angular in recent months as a way to build client apps. However, one of its most revolutionary innovations is happening on the server side.

The Angular framework is a structural javascript-based framework for web applications. It is used to create dynamic web pages with content rendered via web services. Angular is very developer-friendly and has been around for several years, accumulating a powerful community of tools and utilities, including Angular CMS tools, backend frameworks, and more.

As search engines and crawlers scour the web, JavaScript frameworks like Angular are constantly evolving to adapt to their needs. You might already use common SEO techniques, but you could improve your results. Or maybe you aren’t updating your CMS as often as you should, resulting in slower site performance.

Understanding the Basics

Code is the building block of websites. It is written in languages. A large majority of websites are written in three languages.

  • HTML generates content.
  • CSS is responsible for layouts, designs, and visual effects.
  • The web version of the programming code is written in JavaScript.

Websites can customize interactive user experiences with JavaScript. Engaging websites attract visitors. JavaScript makes websites interactive.

To build a website, Angular uses JS to scale up. The Angular framework transforms a dozen lines of flat HTML sent from your server into personalized interactive user experiences.

Understanding the Angular Ecosystem

As a result of the way they work, Angular applications using the framework are referred to as single-page applications. As soon as an Angular application is loaded, other pages can be rendered dynamically without reloading the entire website. The Angular Javascript framework is used for this experience. The pages are dynamically modified by JavaScript code or by only loading the required content. By doing so, the user won’t have to wait for reloading.

Understanding search engine crawlers and SEO

Here’s what we need to understand about search engine crawlers (or bots) before we can come up with a solution. Your website pages and the end goal of your business are indexed by search engines all over the world. To accomplish this, crawlers read the metadata of the pages, such as the title, description, image tags, and categories. To allow search engines to understand the purpose of each page, this metadata must be unique for each one.

Search engine optimization for conventional web applications

Investing in SEO has become a crucial part of any online business today. The web applications that were developed in the past were mostly static pages. The static pages pre-contain all of the information required. With the advancement of web application development, we entered an era of dynamic content rendering, where web pages’ content is stored somewhere and retrieved as needed.

This can be done in several ways:

Server-side rendering (SSR):

Some systems use SSR to reduce the number of server requests and round trips for data collection and templating on the client-side. By server-side rendering, we mean that an application is capable of converting HTML files on the server into fully rendered HTML pages for the client. Web browsers send requests to the server for information, and the server instantly responds by sending a fully rendered page to the client.
SSR is unlikely to cause partial indexing or missing content. With SSR, there are fewer crawl-budget-related SEO and page speed issues than with client-side rendering. Third-party JavaScript seldom works with SSR, which is one of the biggest drawbacks.

Client-side rendering (CSR):

When using client-side rendering, content is rendered by the browser and not by the site’s server. When using a JavaScript framework, this is the default rendering method.
It is the most reliable and scalable method for providing dynamic web pages for website owners since it lowers the server load. As a result, the load time can be extended from milliseconds to seconds, which causes users to wait longer than they would like. To render JavaScript, search bots must revisit the site when resources become available. This may require a considerable amount of time.

Dynamic Rendering (DR):

Dynamic rendering means sending client-side content to the user and rendering user-side content to the bots that will produce HTML pages. A benefit of this is that Google can crawl and index your content without having to run JavaScript. Another advantage is that developers save time and resources by re-rendering content for humans and bots. In addition, it resolves issues with crawl budgets related to page speed. As a result, Google can crawl more pages on the site.

Search engine optimization for single-page applications (SPAs)

With this concept, all the pages and components of an application are loaded once, and only when they are needed. Javascript makes this possible because it dynamically decides which content is required, fetches the data, and renders it in the desired format

Advantages of a single-page application

Single-page applications have many inherent advantages as a result of their dynamic nature.
These include:

  • Reduced transition time after the application has loaded
  • Smoother user experiences compared to conventional web applications
  • Reduced load on the webserver
  • Time-saving development with sophisticated frameworks like Angular

Why do we need Angular Universal?

The Angular Universal framework allows us to build apps that combine the performance and user engagement advantages of single-page apps with the SEO advantages of static pages.

In addition to rendering HTML on the server, Angular Universal offers several other features. Angular Universal is similar to for example a server-side template language, such as Jade, based on the term “server-side rendering”. However, it offers even more features.

With Angular Universal, you get an initial HTML payload rendered on the server as well as booting a trimmed-down Angular version on the client. From there, Angular takes over as a single-page app, generating HTML on the client rather than the server.

In the end, you get the same result, a single-page application, but now, because you got the HTML payload from the server, it will start up much faster and also be fully SEO indexable.

Building search-friendly web pages using Angular SEO

Let us first create a blank Angular JS application before we begin to build an Angular SEO solution.

ng new SEO-friendly-app

Using this command, we will create a brand-new Angular JS application where we’ll design a home page and blog page, render content on the blog page and make them SEO-friendly.

As a start, let’s create routes and pages related to the same. Create your home and blog pages using the following commands in the terminal.

ng g c pages/home –skipTests=true
ng g c pages/blog –skipTests=true

The components will be created and imported into the app.module.ts file. Add the pages to the routing module so that they can be routed. Modify the app-routing.module.ts file.

import { NgModule } from ‘@angular/core’;
import { Routes, RouterModule } from ‘@angular/router’;
import { HomeComponent } from ‘./pages/home/home.component’;
import { BlogComponent } from ‘./pages/blog/blog.component’;
const routes: Routes = [
path: ‘home’,
component: HomeComponent
component: BlogComponent
component: HomeComponent
imports: [RouterModule.forRoot(routes)],
exports: [RouterModule]
export class AppRoutingModule { }

In the above code, components are mapped to their routes, and HomeComponent is set as the default component. The next step is to modify the app.component.html file so that it contains only one line of code.

After this, run the application using the following command and confirm that it is set up correctly. After the command has been executed, you can visit localhost:4200 to ensure everything is set up correctly. It should say “homework”.

ng serve

Add a header to the page so that we can navigate through the pages. Type the following command to create a header component.

ng g c header –skipTests=true

Next, add navigation elements to the header.component.html.

The result is a two-page application that has unstyled navigation between them. Now, let’s examine it from an SEO standpoint. Select “View page source” from the right-click menu. Search engine crawlers should be able to see how your page would look without Javascript. Below is an example.

Perform the same action on the blog page and note the content. The process is similar. This also includes the title and body of the page. The reason is that Angular modifies your DOM using JavaScript.

Pre-rendering and its importance

In essence, pre-rendering means compiling the HTML content of the page ahead of time. Ensure that the title and metadata of the page appear on the client side by implementing this. Pre-rendering allows us to expose the final HTML content rather than blank HTML to the crawler.

Server-side rendering of HTML with Angular

ExpressionEngine is used to render the content on the server using the express Angular Universal rendering engine:

import {createEngine} from ‘angular2-express-engine’;
import { UniversalModule } from ‘angular2-universal’;app.engine(‘.html’, createEngine({}));
app.set(‘views’, __dirname);
app.set(‘view engine’, ‘html’);@NgModule({
bootstrap: [ App ],
declarations: [ App, … ],
imports: [
UniversalModule, // NodeModule, NodeHttpModule, and NodeJsonpModule are included

providers: […],})
export class MainModule {}function ngApp(req, res) {
let baseUrl = ‘/’;
let url = req.originalUrl || ‘/’;let config = {
requestUrl: url,
ngModule: MainModule,
preboot: false,
originUrl: ROOT_URL

console.log(“rendering …”);

res.render(‘index’, config, (err, html) => {


Thus, Angular SEO can be summed up as follows:

  • Understand the difference between HTML and DOM.
  • Provide the right content at the right time and place.
  • Create crawlable, unique, and consistent URLs.
  • Keep track of your script resources’ indexability, size, response time, and caching policies.

Frequently Asked Questions

How do I make Angular projects SEO-friendly?

  • Build a new Angular application
  • Update your project files and install Angular Universal
  • Test your application.

Angular pages can be crawled by Google?

It is believed that Google is capable of crawling an Angular Website, as it has done in the past. It is strictly recommended to create Angular universal SEO websites; otherwise, it would be difficult to index the pages.

Is there a framework that is most effective for SEO?
Rails is one of the most effective frameworks in terms of SEO because it helps developers create SEO-friendly URLs and build responsive websites. Additionally, it enables you to implement client-side and server-side caching, including Meta tags, and even add breadcrumbs.

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Master Angular SEO Guide: Tips, Tricks & Challenges