The backlink index is one of the best too though at the time of writing, Moz has just improved their index. Regardless of index size, which theirs is large enough, the type of data they provide is the most useful. The broken links data is probably the most useful that isn't easily matched by other tools. Additionally, going back to the content explorer, you can find unlinked mentions, a feature that appears to have been removed in Moz's "new" tool (I may just not be able to find it).
After auditing your site this tool gives you suggestions where your site needs changes. It gives full details about how many external backlinks your website has and you can make more backlinks by see your competitor site backlinks details. This tool also helps to find which keywords are helpful for our website & which keywords give organic traffic. 

Competitor Backlink Audit: Analyze the link profile of your competitors and look for opportunities that can help improve your own link building and search performance. Whenever you perform a competitor backlink check or audit, you must also check the inbound links that are pointing to top ranking pages so you wouldn’t miss out on important link opportunities.
Does this mean that Ahrefs gives false difficulty scores? No. It just means what in Ahrefs's opinion, building the recommended number of links to your page will influence all the other factors enough that you will rank. Building 10 links to your single page will increase its page authority and your domain authority. You will be likely to end up closer to page 1.

This report can help you reverse engineer, down to the day, a link building campaign that your competitor is running (always good to be out in front of a big link push by a competitor) and can also help you evaluate your own link campaign or even help you spot a link growth issue that may have resulted in some kind of penalty or over-optimization filter.

Google Webmaster SEO Starter Guide - Originally written for Google Employees to improve website performance with users and search engines. Related Terms: SERP - Search Engine Rank Position  |  PageRank (PR) - Named for Google Co-founder, Larry Page. The PR Scale of 0-10 rates a web page. In the past, rank was based on the number of high ranking links pointing to the website. Recently factors like relevance and quality have gained importance. This website's current PR rating: 
If you're okay with the pricing they offer – Ahrefs is the perfect solution for any content creators out there. You are able to step up your SEO game with data on number of backlinks as well as info on that particular site. But before you start using Ahrefs, try out what Google already offers first, maybe it will be enough for you in the beginning.
Brian is the founder of MeiggsMedia and has a love for digital marketing, entrepreneurship, and personal finance. Brian has been quoted in several online publications, including Yahoo! Finance, NASDAQ, MSN, AOL, Discover, GOBankingRates, Student Loan Hero and more. When not helping others reach their goals, Brian can be found at the gym, traveling, exploring Washington DC, or helping bloggers, entrepreneurs, and small businesses succeed at MeiggsMedia.
I thought I was the only one confused between these two tools. I wasn’t sure which SEO tools to use and whether I should prioritize Ahrefs over Semrush or the other way around. I know they have different features. When it comes to keyword research, Semrush is better, but for backlink analysis, it’s Ahrefs. This comparison helped me decide which one to get. Thanks for the article! The comments above also helped me in my decision.

Have you ever received a warning from Google Chrome to not visit a page? It will block the page and prevent you from going there because of some security issue. We begin by ensuring your website passes a SSL Certificate Validity Check. This a whole range of security protocols that should be within your website’s coding or built-in to the domain. It shows the world that your site is trustworthy!

I work with legal websites and it makes it easy to see what the top law firm websites are using for backlinks. I can then export all the backlinks into an Excel file and decide what are the best ones for me to try and obtain for our clients. The reports section is nice too, it gives us an easy to understand solution for our clients and answers their question of where their money is going to.
Another feature of Ahrefs that could potentially help you take your campaign to even better heights is their content gap feature. It gives you the option to check which keywords your competitors are ranking for so you can stay one step ahead at all times. Basically speaking, Ahrefs gives SEOs the ability to overtake their competitors through knowing which keywords to target and focus on.
Keyword explorer, which was released few weeks back is one of the most exhaustive tools that we have see off late. Keyword Ideas, Phrase Match and KD help content marketers to align their content marketing efforts with organic search trends. Apart from that from an on page point of view, the tool gives everything that modern age webmaster need to track their overall performance.
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