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What does Google think about : JavaScript & Technical SEO

3631 statements
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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★★★ How long does it really take to lift a malware report in Search Console?
After cleaning your site of malware, you can request a review through Google Search Console. Although this is not instantaneous, the review typically occurs within a few hours, allowing for a quick re...
Matt Cutts Aug 05, 2011
★★★ Why should you start with low-traffic sites when consolidating domains?
When consolidating multiple sites under a single domain, it is advisable to begin with the sites generating the least traffic. This helps minimize risks and ensures that the redirect process functions...
Matt Cutts Aug 05, 2011
★★★ Is it true that Google views SEO as legitimate or is it a gray area?
Google does not consider SEO as spam. SEO is a legitimate and useful way to ensure that web pages are well-represented in search engines. It can include optimizing site architecture, improving site sp...
Google Aug 05, 2011
★★★ Is having a preferred domain in Google Search Console really essential to avoid losing link juice?
It is essential to set your preferred domain in Google Webmaster Tools to unify link juice. A poor configuration could divide link authority if users link your site with different versions (www or non...
Tiffany Oberoi Aug 05, 2011
★★★ What are the secrets to writing a Google review request that actually gets results?
An effective review request must specify the spam issue encountered and the exact steps taken to resolve it, rather than simply stating that the site now adheres to the guidelines....
Tiffany Oberoi Aug 05, 2011
★★★ How long should you keep the old site online after a domain migration?
It is beneficial to keep the old site live for a long time during a domain change to ensure that the 301 redirects have enough time to be properly processed by search engines....
Matt Cutts Aug 05, 2011
★★★ Is it really necessary to migrate your domain in multiple steps with gradual 301 tests?
It is preferable to test a small part of the site with a permanent 301 redirect before fully migrating to a new domain. This allows you to check whether the content continues to rank well and resolve ...
Matt Cutts Aug 05, 2011
★★★ Can you really create an unlimited number of 301 redirects without facing SEO penalties?
There is no limit on the number of 301 redirects a site can have. Whether you have 10,000 or 100,000 pages, Google is prepared to process all redirects as long as it can crawl the pages of the old dom...
Matt Cutts Aug 04, 2011
★★★ How does Googlebot really handle changes to your server's IP addresses?
Googlebot periodically checks the IP address of domains, typically at least once a day, to ensure that changes in address are detected. This ensures that even if your TTL is not low, Googlebot will up...
Google Aug 04, 2011
★★★ Should you really lower the DNS TTL before migrating your hosting?
When moving your website to a new host, ideally you should lower the DNS Time to Live (TTL) value to about 5 minutes before the change. This reduces the duration in which users and bots continue to po...
Google Aug 04, 2011
★★★ Is it possible to sell the same products on multiple domains without risking a Google penalty?
Google does not necessarily view selling the same products across three different domains as a spammy practice, especially if each domain has a distinct sales approach and a different target audience....
Google May 26, 2011
★★★ How many domains can you use to sell the same products without risking a Google penalty?
Selling the same products in an identical manner across multiple domains can seem odd and potentially problematic for Google, especially if the number of domains starts to exceed three. A single domai...
Google May 26, 2011
★★★ How can a simple space in noindex destroy your indexing strategy?
The 'noindex' attribute must be written without spaces, as 'noindex', to function properly. A common mistake is adding a space, which prevents the attribute from being recognized by Google....
Matt Cutts May 26, 2011
★★★ Should you really separate your products across multiple domains?
For Google, there is no issue with having different domains for each product when they are truly distinct and the number of domains remains low (two, three, or four). This can be justified by logicall...
Google May 26, 2011
★★★ Are multiple TLDs really a sign of legitimacy for Google?
Spammers generally avoid using multiple TLDs because it is costly and complicated to manage several domains in different countries. Thus, having the same content across a small number of country-speci...
Matt Cutts May 26, 2011
★★★ Should you abandon microsites to focus your efforts on a main site?
When creating multiple microsites, it is often challenging to give them sufficient attention and care, which can reflect in their performance. It is preferable to focus on a main site that can become ...
Google May 06, 2011
★★★ Should you really use rel=canonical tags across domains or prefer 301 redirects?
Google accepts rel="canonical" tags between different domains. They essentially function like a 301 redirect. However, a 301 redirect is always preferred as all search engines know how to handle it. W...
Google Apr 20, 2011
★★★ Does Google really push for asynchronous Analytics scripts to enhance your performance?
Google has introduced asynchronous Google Analytics, enabling pages to load without waiting for the complete loading of the Analytics code. Thus, Google ensures not to slow down sites with its scripts...
Google Apr 12, 2011
★★★ Is the hashbang (#!) still a viable solution for indexing AJAX content?
There is an indexing standard for AJAX that uses the exclamation mark with the hash symbol ('#!') which allows Google to know that the content should be indexed. Twitter and Facebook utilize this meth...
Google Apr 12, 2011
★★★ Does loading speed really affect Google rankings?
As of this year, Google uses site loading speed as a minor factor in its search ranking. This affects about 1 in 100 queries, translating to 1 in 1000 sites. Although it is not a major factor, improvi...
Google Apr 12, 2011
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