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Rendering

Rendering is the process by which a browser or search engine interprets HTML, CSS, and JavaScript resources to construct actual page content. In JavaScript-based sites, making sure that the rendering results are displayed accurately in search engines is a key SEO check item.

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Search engines can crawl pages and determine the content and links visible to users through rendering. Rendering is especially important on sites where JavaScript generates content.

If important text or links are not visible during the rendering process, search engines may not be able to fully understand the page. SEO problems arise when the screen the user sees and the screen the search engine sees are different.

Rendering is tied to implementation methods such as server-side rendering, client-side rendering, and static site generation.

Key takeaways

  • Interprets HTML and resources to construct page content.
  • It is necessary for search engines to understand the content they see.
  • This is important for JavaScript-based sites.
  • Connected to SSR, CSR, and SSG.

References

Frequently asked questions

How do I know if my SEO is being affected by a rendering issue?

Use 'View crawled pages' in the Google Search Console URL inspection tool to see the results rendered by Googlebot. Compare the user screen and Googlebot rendering screenshots to check whether main content, titles, and internal links exist even after rendering.

What's the quickest way to fix rendering problems?

Including important content and internal links in the initial HTML (server response source). Switching to the SSR or SSG method, or at least making the most important content accessible without JavaScript, is effective.

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