Google Algorithm Change History

Mobile-First Index Roll-out  —  March 26, 2018      Confirmed Google announced that the mobile-first index was finally “rolling out.” Since the index has been in testing for many months, and Google has suggested they are migrating sites gradually, it’s unclear how much impact this specific roll-out had on the overall …

What is Alt Attributes

Alt attributes make it possible to enter an alternative description in the HTML code for every image on a website. This description appears if, for some reason, the image cannot be displayed. Search engines’ ability to recognize the contents of images is still limited which is why they rely on …

What is Anchor Text

Anchors text is the text displayed on a website for a given link. Users click on the anchor text in order to get to the associated website. Links like “here” or “next” are not suitable because they do not provide any information about their destination. A visitor is not very …

What is Broken Links

A broken link or dead link is a link on a web page that no longer works because the website is encountering one or more of the reasons below. An improper URL entered for the link by the website owner. The destination website removed the linked web page (causing what …

What is Backlink

Backlinks are links from outside domains that point to pages on your domain; essentially linking back from their domain to yours. To a larger degree, your backlink profile is made up of backlinks from external sites (also known as referring domains) that contribute to the overall strength, relevance and diversity …

What is Penguin and How It Works

Penguin Launch date: April 24, 2012 Hazards: Spammy or irrelevant links; links with over-optimized anchor text How it works: Google Penguin’s objective is to down-rank sites whose links it deems manipulative. Since late 2016, Penguin has been part of Google’s core algorithm; unlike Panda, it works in real time. How to adjust: Monitor …

What is Hummingbird and How It Works

Hummingbird Launch date: August 22, 2013 Hazards: Keyword stuffing; low-quality content How it works: Hummingbird helps Google better interpret search queries and provide results that match searcher intent (as opposed to the individual terms within the query). While keywords continue to be important, Hummingbird makes it possible for a page to rank for a …

What is Domain Extension

The definition of a domain extension is the notation at the end of a web address that specifies an Internet category or a country code. 1. An example of a domain extension which is an Internet category is .com for commercial, .org for organization, .gov for government, .edu for all …

What is Panda and How It Works

Panda Launch date: February 24, 2011 Hazards: Duplicate, plagiarized or thin content; user-generated spam; keyword stuffing How it works: Panda assigns a so-called “quality score” to web pages; this score is then used as a ranking factor. Initially, Panda was a filter rather than part of Google’s ranking algo, but in January 2016, …