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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★★ 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
★★★ Why isn't Google indexing all of your discovered URLs?
When many URLs fall under the 'discovered, currently not indexed' category, it means that Google has crawled the site and seen these URLs, but is not convinced that indexing them will provide value to...
John Mueller Dec 04, 2020
★★★ Do external reviews showcased on your site truly enhance your organic SEO?
Displaying authentic external ratings or reviews on your site does not influence Google's algorithms or ranking from a purely SEO standpoint. Users may value them for trust, but there is no immediate ...
John Mueller Dec 04, 2020
★★★ Are Longer Link Anchors Actually Better for SEO Than Short Ones?
John Mueller explained during a hangout that providing a long link anchor could be a good thing because it gives more contextual information about what the target page offers and this may potentially ...
John Mueller Nov 30, 2020
★★★ Does the cached page truly reflect what Google indexes?
The cached page is a technical copy of the fetched HTML, not a representation of what is actually indexed. To check indexing, use the URL Inspection Tool. JavaScript may not execute on cached pages as...
John Mueller Nov 27, 2020
★★ Are iFrames really crawled by Google, or should you avoid them for SEO?
When it comes to content loaded via iFrame, Google can sometimes read it and sometimes not. If you want the content to be associated with your site, implement it directly on the page or via JavaScript...
John Mueller Nov 27, 2020
★★★ Should you really delete your disavow file or risk a manual action?
If you delete your disavow file, all those links will once again be treated as normal links. The Web Spam team could then review the site and take manual action if the links are problematic and there ...
John Mueller Nov 27, 2020
★★★ Should you really stop using the URL Inspection Tool to get your pages indexed?
The URL Inspection Tool is fantastic for urgent situations where an error needs to be quickly resolved, but it shouldn't be used for regular updates or adding new content. Using this tool for routine ...
John Mueller Nov 27, 2020
★★★ Does Google really render ALL JavaScript, even without initial server-side content?
Google renders practically all JavaScript pages. The presence of initial server-side content does not influence the decision to render or not render a page's JavaScript. A heuristic exists for certain...
Martin Splitt Nov 25, 2020
★★★ Is it true that Google ignores JavaScript rendering if your noindex tag appears in the initial HTML?
If a page contains a meta robots noindex tag in the initial HTML, Google will not render the page, even if JavaScript later modifies that directive. Google considers that the page does not want to be ...
Martin Splitt Nov 25, 2020
★★ Does the CSS content-visibility property really affect rendering in Google?
Regarding the new CSS content-visibility property, Martin Splitt has not yet tested its impact on Google rendering. He expects it to work directly due to updates from the Chromium engine. If it doesn'...
Martin Splitt Nov 25, 2020
★★★ Does Google really render 100% of JavaScript pages before indexing?
Contrary to common belief, practically all pages (almost 100%) are rendered in JavaScript before being indexed. There aren't really two distinct indexing paths. Google processes the initial HTML and t...
Martin Splitt Nov 25, 2020
★★ Could your deleted resources be harming your pre-render indexing?
When using cached pre-render solutions, it is essential to keep old versions of assets (JavaScript, CSS) available long enough to prevent the cached HTML from referencing resources that no longer exis...
Martin Splitt Nov 25, 2020
★★ Does AJAX really work for SEO, or should you think twice before using it?
AJAX requests add complexity to SEO because they create more potential failure points (robots.txt, network errors, etc.). While they work if correctly implemented, they are not fantastic for SEO and r...
Martin Splitt Nov 25, 2020
★★★ Why does Google display empty pages even when your JavaScript site is working perfectly?
If a JavaScript request to an API (like /api/cats) is blocked by robots.txt, Googlebot will not be able to load it even if it works in browsers. Browsers ignore robots.txt, but Google respects it, whi...
Martin Splitt Nov 25, 2020
★★★ How do your failing APIs sabotage your Google indexing?
If an API fails during rendering, Google may not see the content coming from the API and could potentially group different URLs into duplication clusters due to those failures. It is crucial to have m...
Martin Splitt Nov 25, 2020
★★★ How long does Google really wait before giving up on JavaScript rendering?
Google does wait a certain amount of time for JavaScript rendering, but it's essential to optimize for users above all. If the rendering takes tens of seconds, it's already problematic. Some sites tak...
Martin Splitt Nov 25, 2020
★★★ Does Google really render all JavaScript pages, regardless of their architecture?
Google renders virtually all pages. The fact that part of the content is rendered on the server and another on the client does not influence Google's decision to render the page or not. There is a heu...
Martin Splitt Nov 25, 2020
★★★ Does Page Experience really change how websites rank on Google?
The Page Experience ranking factor, including Core Web Vitals, will be active in Google Search starting May 2021. Although there is still time, it is recommended to act quickly as improving site speed...
John Mueller Nov 25, 2020
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