What does Google say about SEO? /
This category compiles all official Google statements regarding JavaScript and technical aspects of search engine optimization. Modern JavaScript frameworks (React, Angular, Vue.js) and web application architectures (SPA, SSR, CSR) present critical challenges for crawling and indexing. Google's guidance on JavaScript rendering, dynamic DOM manipulation, AJAX implementation, and API calls is essential for ensuring client-side content visibility. SEO professionals will find authoritative positions on implementation best practices, differences between server-side and client-side rendering, and recommendations for optimizing load times while guaranteeing content accessibility to search crawlers. Understanding data formats (JSON, XML) and their SEO implications completes this vital resource. These official declarations help prevent common technical implementation mistakes that can severely impact the search performance of modern websites and JavaScript-powered applications. Access to Google's verified positions on these technical matters enables practitioners to make informed architectural decisions and implement JavaScript solutions that maintain strong organic search visibility while delivering enhanced user experiences.
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★★★ Are Office Hours truly the best channel to ask your SEO questions to Google?
John Mueller's Office Hours (roughly weekly) are the recommended channel for asking SEO questions. You can post on YouTube or join the video call directly. The recordings are then published. Links ava...
Gary Illyes Dec 09, 2020
★★ Are SSR and pre-rendering really SEO techniques or just developer tools?
Pre-rendering, SSR, and dynamic rendering are not specifically created for SEO. They are designed to enhance developer experience (maintaining less code) and particularly user experience (loading perf...
Martin Splitt Dec 09, 2020
★★ Is your API usage secretly draining your crawl budget?
For sites sensitive to crawl budget, client-side JavaScript with multiple API requests (e.g., 5 requests per page on 10 million pages) counts against the crawl budget and can accumulate quickly....
Martin Splitt Dec 09, 2020
★★ Could a <div> in the <head> ruin your technical SEO?
If body-related HTML elements (like iframe, div, p, span) are found in the head tag, the HTML lexer automatically closes the head just before these elements and starts the body from there. This is cru...
Gary Illyes Dec 09, 2020
★★★ Is third-party client-side JavaScript sabotaging your Google indexing?
When a site uses client-side JavaScript to load critical content from third-party sources (like comments), Google may face indexing issues if the third-party service is overloaded or blocks bots. It i...
Martin Splitt Dec 08, 2020
★★★ Why can Google reveal its crawling secrets but not its ranking secrets?
Google can explain crawling and indexing in more detail without fear of creating exploitable spam vectors. Spam is not a major concern for these aspects, unlike ranking where more details could pose p...
Gary Illyes Dec 08, 2020
★★ Is it true that JavaScript can impact your SEO, and how should you approach it?
Using JavaScript is not prohibited for SEO, but it’s important to understand that relying on the browser and Googlebot to handle third-party content means you have less control than when the server do...
Martin Splitt Dec 08, 2020
★★ How can bundling your JavaScript speed up your site’s crawl?
JavaScript bundling (file grouping) reduces the number of HTTP requests and facilitates the work of crawl bots. Code splitting then allows for intelligent separation of code according to site sections...
Martin Splitt Dec 08, 2020
★★★ Can Google really notify you in time when its search engine goes down?
Google has developed a protocol to better communicate about search outages after incidents in 2019. This protocol defines what to communicate, when, to whom and where, to inform SEOs more quickly abou...
Gary Illyes Dec 08, 2020
★★★ Should you really prioritize server-side rendering over JavaScript for critical SEO content?
For content you consider important for SEO, it is better to manage it server-side rather than client-side with JavaScript. This gives you more control over what is indexed and how it happens, especial...
Martin Splitt Dec 08, 2020
★★★ Is JavaScript truly neutral for SEO?
The use of JavaScript or how it is structured (bundling, splitting) is not a ranking factor. It can enhance user experience and facilitate crawling, but does not directly impact positioning in search ...
Martin Splitt Dec 08, 2020
★★★ Does JavaScript rendering really slow down the indexing of structured data?
The discovery of structured data generated with JavaScript is not significantly delayed as Google renders almost all pages. The median rendering queue time is about 5 seconds....
Martin Splitt Dec 07, 2020
★★ Will Google finally utilize nofollow links to speed up the discovery of new domains?
Google is developing projects to use nofollow links to help webmasters get their new sites discovered faster, especially when redirecting to a new domain with a nofollow link....
Gary Illyes Dec 07, 2020
★★ Are static HTML sites really free from Core Web Vitals issues?
Core Web Vitals issues are not solely related to JavaScript. Static HTML sites can also have problems, particularly with oversized images that cause Cumulative Layout Shift when they load late....
Martin Splitt Dec 07, 2020
★★★ Are JavaScript-generated structured data really indexed by Google?
JavaScript-generated structured data works correctly. They do not function in the Structured Data Testing Tool, but they do work in the Rich Results Test and Search Console....
Martin Splitt Dec 07, 2020
★★★ Are Core Web Vitals really the only three metrics that matter to Google?
Current Core Web Vitals include three metrics: First Input Delay (interactivity), Largest Contentful Paint (main content display), and Cumulative Layout Shift (visual stability). These metrics represe...
Martin Splitt Dec 07, 2020
★★ Can nofollow links really help Google spot malicious sites?
Nofollow links could be helpful in discovering malicious sites, such as those that force downloads or spread spam. Google is studying this possibility but has not made any concrete announcements....
Gary Illyes Dec 07, 2020
★★★ Can Google Still Rank Your Page for Old Keywords That Were Removed from the Content?
John Mueller indicated on Twitter that Google can continue to rank a page for an "old query", even if the terms that constitute it have disappeared from the page at some point: "If we know that text w...
John Mueller Dec 07, 2020
★★ Does mobile-friendliness really have measurable objective criteria?
There is no objective measure to determine whether a page is mobile-friendly or not. Different tools may have different criteria (for example, the size of clickable areas). For Google SEO, use the mob...
John Mueller Dec 04, 2020
★★★ Do keyword-rich TLDs (.seo, .shop, .paris) really enhance your SEO?
Google treats all new TLDs (top-level domains) such as .club or .tools exactly like any generic domain such as .com. There is no additional SEO value in having keywords, city names, or country names i...
John Mueller Dec 04, 2020
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