Optimizing Angular Apps for SEO: Guide

Frameworks like Angular and React are probably the most attention grabbing JavaScript libraries in the world of JavaScript. If these frameworks provide many benefits, they require an extra effort to correctly reference the sites they operate on.

In this article, we will look at why and how to overcome this problem through three main points:

Advantages of Angular

Pages do not reload completely

When the user browses the page, only parts of it are changed, making the experience a lot smoother.

Only dynamic data passes

After the first page is loaded, only dynamic data passes through Angular when the user navigates through the application.

disadvantages of angular

Search engines must “guess” when the page is complete

When a page is visited, search engines will see very little HTML code. Once the data is sent by the server, only when the framework starts, will the page be fully rendered.

The problem is that the search engines themselves must determine when the framework has finished rendering the page, which means the risk of indexing incomplete content.

Deep links are difficult to index

Due to the lack of HTML5 support, applications using Angular base their navigation URLs in HTML anchors (URLs containing #, such as /#section1).

This makes it very difficult for search engines to index these URLs as separate pages. There are ways to do this, but it’s a pain and it will still be difficult to get the indexing right, unlike using plain HTML.

Fortunately, it is possible to have a high-performance site that is easy to navigate without being condemned to suffering from poor context. Let’s see how!

How to Optimize Your Angular Application for SEO?

By default, Angular applications run on the client side. This means that the first thing that loads when your application starts up is an empty HTML shell. It contains nothing but a script: it will render all the content and complete the page.

Browsers and crawlers can only post page text and links (as well as title and <मेटा> details), and only when they are rendered to JavaScript. This limits the SEO capability of your Angular application.

Fortunately, since the release of Angular 11 and its newer versions, Google has included new default libraries to make Angular completely SEO-friendly. These libraries make it possible to modify and set meta tags, either by configuring Angular Universal to start in pre-rendering mode, or by allowing applications to manage this aspect themselves.

There’s still a good way to get your pages indexed and ranked in search engines to overcome barriers to ranking: you need to make sure that each URL in your app is a complete one, with metadata and content available from the start. Return the HTML page rendered in the way. its loading. Of course, page loading should be as fast as possible on both mobile and desktop!

Angular developers use one of three methods to successfully overcome this problem: server-side rendering, pre-rendering, or dynamic rendering.

These three methods give the expected result: crawlers fetch the entire content at load time and index it like a normal HTML page. However, these three methods work in slightly different ways.

1. Server-Side Rendering

With server-side rendering, each HTML page is rendered on the server at runtime. This means that before the page is loaded, the server takes some time to render the HTML on demand and send it to the browser.

This method can potentially reduce page load speed, especially if there are multiple requests coming in at the same time. Hence it can affect the performance of the site and affect its ranking.

server-side rendering

2. Pre-rendering

With pre-rendering, a (cached) HTML file of each URL is rendered at build time. This means that all the HTML files in your app are rendered in advance, so pages are ready to load quickly on demand.

The downside, as it requires one, is that for every change made to a page, it has to rebuild its stable version.

3. Dynamic Rendering

With dynamic rendering, your application pre-renders HTML pages and renders them only to crawlers. Actual users interact with a normal, client-rendered version of the application.

This does not prevent the previous loopholes, yet it will be necessary to recreate each modified page so that the robot has an updated version of the page.


Every JS framework has methods to tackle the SEO challenge. Angular provides a complete solution called Angular Universal.

Can’t Improve SEO of Your Angular Application? Find an Angular developer on Codeur.com. This professional will be able to configure your application to adapt to its natural context.

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