Angular Universal & SSR
Server-side rendering, prerendering, Angular Universal setup, platform detection, transfer state, SEO optimization
1What is Angular Universal?
What is Angular Universal?
Answer
Angular Universal is the official solution for server-side rendering (SSR) in Angular. It generates HTML on the server before sending it to the client, improving initial load time and SEO. Unlike classic rendering which requires downloading and executing JavaScript before displaying content, Universal generates complete HTML immediately.
2What is the main advantage of server-side rendering (SSR) for SEO?
What is the main advantage of server-side rendering (SSR) for SEO?
Answer
Search engine crawlers receive complete HTML immediately usable, without waiting for JavaScript execution. This ensures correct content indexing even for crawlers that struggle with classic SPAs. Additionally, meta tags (title, description) are present from initial load, improving visibility in search results.
3What is the difference between SSR (Server-Side Rendering) and prerendering?
What is the difference between SSR (Server-Side Rendering) and prerendering?
Answer
SSR generates HTML on-demand for each user request server-side, enabling dynamic content. Prerendering generates HTML for all routes at build time and serves static files. Prerendering suits sites with static content (blog, documentation) as it's faster and less resource-intensive. SSR is needed for personalized or frequently changing content.
How to detect if code is running server-side or browser-side?
What is the TransferState API and what is its purpose?
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