Google noted that if the HTTP status code is non-200 (for example, on error pages with 404 status code), rendering might be skipped.
Google made another change to the JavaScript SEO documentation help document to explain and clarify JavaScript execution on non-200 HTTP status codes.
The change. Google wrote, “All pages with a 200 HTTP status code are sent to the rendering queue, no matter whether JavaScript is present on the page.” “If the HTTP status code is non-200 (for example, on error pages with 404 status code), rendering might be skipped,” Google added.
Google also clarified that Googlebot queues all pages with a 200 HTTP status code for rendering.
Here is the section that was updated:
Google explained, “While pages with a 200 HTTP status code are sent to rendering, this might not be the case for pages with a non-200 HTTP status code.”
Other changes. Google made a number of changes to the JavaScript SEO documentation this week including:
- Google clarifies canonicalization with JavaScript
- Google says don’t use JavaScript to generate a noindex tag in the original page code
Why we care. This means you should ensure these pages return a 200 status code so Google does not skip rendering them. If Google skips rendering, it will likely lead to poor ranking of that page in Google Search.
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