Google search algorithm changes/ updates - 2016

Google is known to carry out updates/ tweaks to its algorithms several hundred times in a year. Many of these algorithm updates are real-time tests, rolled out to small audiences, before being implemented globally. It is practically impossible for us, despite us monitoring search results and the SEO landscape very closely, to be able to list details of all updates that Google rolls out. What we have below is an attempt to consolidate all the major algorithm updates that Google has rolled out in 2016, which have either been formally announced or confirmed by Google, or noticed and extensively discussed by the SEO community. We will continue to update this list as we hear of new updates being rolled out. These are arranged in chronological order of the most recent update being at the top.

Before we delve into updates that have already been rolled out, let us have a quick look at an impending algorithm update that has been confirmed and announced by Google.

Google search algorithm changes and updates, Q3, 2016

September 23, 2016
Google releases Penguin 4.0, now will be a part of Google's core algorithm

Google has updated Penguin, the algorithm that was designed to remove and penalize sites with questionable/ spammy inbound link profiles, after nearly two years. The latest release Penguin, which the SEO industry is citing as Penguin 4.0, has been progressively rolled out in all languages. Importantly, Google announced that Penguin is now a part of its core search algorithm.

Here are the key changes:

  • Penguin is now real-time.
    Penguin algorithm runs in real time now, which means that the data is refreshed in real time. As a result, changes will be visible much faster, typically taking effect shortly after Google recrawls and reindexes a page. Google said that it will refresh list of sites affected by Penguin in the past. It also means that Google is not going to comment on future refreshes.
  • Penguin is now more granular.
    Penguin now devalues spam by adjusting ranking based on spam signals, rather than affecting ranking of the whole site.

What this will mean for SEO professionals and online marketers
Both of the above aspects of the release should be viewed positively by online marketers looking to attract organic search traffic from Google through SEO. For one, websites that had previously been affected by Penguin have a chance to recover, assuming they have carried out a cleansing of 'bad' / low-quality links. Until this most release, webmasters would have had to wait until a subsequent roll-out of the Penguin algorithm to expect to overcome the effects of Penguin.

Secondly, webmasters have hope that even if some pages are affected due to poor links, their entire website is unlikely to be affected by this. This may also help reduce the attractiveness of negative SEO for anyone indulging in that.

For more details on this update, please see:

September 13, 2016
Image/Universal Drop: Google drop image results in SERPs

Google has dropped almost 50% image (universal/vertical) results from Google organic search result pages from September 13th. Between September 13th and 14th, search results flux trackers such as Mozcast and RankRanger have reported significant drop in Google search result pages with images(universal/vertical). Also, Mozcast also recorded “extreme temperature of 111 °F” on that day.

Below is the 30 days’ (August 28th to September 26th, 2016) Google SERP Image Feature Graph, that shows the steep drop i.e. searchers are only seeing images in 15.8% of search results, down from about 33%.

MOZ's Google SERP Feature Graph - Images

This change will be a problem for businesses and websites that rely on image search results for a lot of traffic. We suspect a lot of product-centric, travel-related and people-centric sites will see some of their traffic decline with this change, though we haven’t specifically monitored any of these. At the same time, SEO marketers in general should be happy with this change because it will mean that some of the SERP page inventory is freed up for regular organic search results. This will explain some of the traffic growth that many SEOs are reporting following the roll-out of Penguin 4.0 i.e. not all improvement in traffic will be due to the real-time Penguin alone, but also be a result of this change related to image search results. 

For more details on this update, please see:

September 1, 2016
Google Possum - Local organic search algorithm update (Google Local Pack ranking quality update)

MozCast recorded extreme temperatures of 108°, with other search ranking tracking tools reporting similar results and many webmasters reporting ranking changes. Google had no initial comment.

It seems to indicate this particular update only impacted ranking in the 3-pack and Local Finder (AKA the local results or Google Map results). Most of the local SEO experts are saying this is related to a quality update based on Google removing a lot of spammy local results.

For more details on this update, please see:

August 23, 2016
Google to drop mobile-friendly label & devalue sites with intrusive pop-ups, interstitials in mobile search results

Google has announced two changes in mobile search results.

  • Google said that soon it is going to remove mobile-friendly label that appears in mobile search results. That does not mean that the mobile-friendly algorithm is dead, it just means Google is removing the label.
  • Google will reinforce its emphasis on the mobile search experience with a new penalty affecting "intrusive interstitials" on mobile web pages. It will begin cracking down on “intrusive interstitials” on January 10, 2017, because this type of ad “can be problematic on mobile devices where screens are often smaller.” Google will be potentially penalizing — i.e., lowering the rankings — of these web pages. Google said “pages where content is not easily accessible to a user on the transition from the mobile search results may not rank as highly.”

Below are the examples of intrusive interstitials that make content less accessible

An example of an intrusive popup

An example of an intrusive standalone interstitial

Another example of an intrusive standalone interstitial


Below are the examples of interstitials hat would not be affected by the new signal, if used responsibly

An example of an interstitial for cookie usage

An example of an interstitial for age verification

An example of a banner that uses a reasonable amount of screen space


For more details on this announcement, please see:

August 02, 2016
Google expanded AMP support across the entire search results pages

In February, Google introduced AMP content into the Top Stories carousel in mobile results. Today the company has announced a developer preview (, with a general roll out to follow in the near future. What this means is that mobile search users will soon start to content in search results with the AMP lightning bolt logo , indicating the content is available in the mobile format - comparable to "mobile friendly." AMP pages will not receive a ranking boost, though Google has suggested in the past load time and page speed are (or will become) mobile ranking factors.

AMP in Google main search result pages AMP in Google main search result pages
AMP in Search Preview

For more details on this announcement, please see:

Google search algorithm changes and updates, Q2, 2016

May 12, 2016
Google rolls out the second version of its mobile-friendly algorithm

Google has fully rolled out the new mobile-friendly algorithm, as promised in the first quarter of 2016. To confirm the news, Google Webmaster Trends Analyst, John Mueller announced on Twitter saying, “The mobile changes mentioned here are now fully rolled out.”

It is believed that the new Google mobile-friendly algorithm would give an additional ranking boost for mobile-friendly websites in the mobile search result pages.

For more details on this announcement, please see:

Google search algorithm changes and updates, Q1, 2016

March 16, 2016
Google to boost mobile-friendly algorithm in May 2016

Google announced on the Webmaster blog that they are going to be boosting the effects of the mobile-friendly algorithm, popularly referred to as Mobilegeddon’, they launched back on April 21, 2015.

Google said the update will happen “beginning in May” and it “increases the effect of the [mobile-friendly] ranking signal.” Google said if you are already mobile-friendly, you do not have to worry, because “you will not be impacted by this update.”

For more details on this announcement, please see:

February 24, 2016
Google’s AMP top stories are now live in mobile search results

Google’s Accelerated Mobile Pages (AMP) are now live in mobile search results. The objective is faster, more engaging mobile web experience in an open ecosystem.

For more details on this update, please refer to the following:  

February 23, 2016
Google SERPs change with 4 ads at the top of the page

Google made major changes to its AdWords search engine advertising product, removing right-column ads entirely and rolling out 4-ad top blocks on many commercial searches. While this was a paid search update, it is bound to have significant implications for click-through rates (CTR) for both paid and organic results, especially on competitive keywords. From a SEO perspective, the fact that organic results are pushed down further could potentially very negatively impact the amount of traffic that websites can expect to attract from organic search. This change will require search marketers to rethink both their SEO and paid marketing strategies and reallocate resources.

For more details on this update, please see:

January  8, 2016
Google’s Unnamed - Core algo update

Multiple tracking tools (including MozCast) reported historically-large rankings movement, which Google later confirmed as a "core algo update". Google officially said that this was not a Penguin update, but details remain sketchy.

For more details on this algorithm update, see:

Struggling to keep up with all the Google algorithm updates? Don’t worry- let our SEO consultants worry about these updates and formulate proactive SEO strategies for you. Contact us today to discuss your SEO & online marketing requirements.

Contact Us

Name :
E-mail :
Telephone :
Website :
Areas Of Interest :
Search Engine      Optimisation(SEO)
Pay Per Click(PPC)
Marketing      Communications(press releases,ads,other collateral)
Social Media        Marketing
Content Writing
Website        Development

Our Services

Clients & Verticals