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, …

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 …

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” …

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 …

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 …

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 …

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 …

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 …

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 …