In this post, I am going to share best free SEO tools for 2021.
In Fact, Many Pro bloggers use these SEO tools. These tools are very helpful in doing lots of SEO activities like keyword research, tracking daily traffics, traffic sources, broken links and many more things.
I tasted every tool my self.
Let’s get started.
18 Best Free SEO Tools
1. Free SEO Tools by Google
Google provides you free SEO tools for your every SEO need including keywords analysis, loading speed, broken links, traffic sources and much more.
Google Search Console
It lets you measure your blog performance (total clicks, total impression, Average CTR and Position) in search engine, submit a sitemap and fix technical issues.
When we talk about blog performance, it lets you analyses your blog deeply like top performing queries, top pages, countries, devices and more.
Google Keyword Planner
Google Keyword Planner is a keyword research tool. It shows keyword along with avg. monthly searches and competition.
In the earlier time, it shows the exact volume but later Google removed that feature.
Google Analytics is must use SEO tool. It lets you analyze your website traffic like how many visitors you are getting to your website, from which country they are coming, for how much time they stay and much more information.
Google PageSpeed Insights
Google PageSpeed Insights tells you how fast your blog loads and provides optimization recommendations to speed up your blog loading time.
Google’s Mobile-Friendly Test
Google’s Mobile-Friendly Test checks whether your blog is mobile friendly on not.
Also, it shows how your blog looks on a mobile device.
Another best feature is page loading issues. Yes, it provides you additional information using which you can improve loading speed also.
Google Trends lets you analyze the popularity of search queries or keywords in Google Search over time. It also provides information about the latest trending searches. If you write about trending stuff, then this tool can be proved very useful for you.
If you are a newbie, then start using all above mentioned tools now. All are very helpful to improve your blog ranking in Google and other search engines.
2. Answer the Public
Answer the Public is quite different from other keyword research tools. Most of keyword research tools fetch data from Google Keyword Planner.
But it brings you keyword ideas from the forums, blogs and social media. Yes, you don’t need to check out popular forums and blogs to know what people are asking there.
Answer the Public does all for you in free.
Just visit Answer the Public and put your query into search box and enter.
It will display a list of 400+ keywords.
3. Ahrefs’ Free Backlink Checker
Ahrefs’ Free Backlink Checker is my next pick for best free SEO tools. It helps you knowing top 100 backlinks, Top 5 anchors, Top 5 pages, Domain rating, total number of backlinks & referring domains for any blog or blog post.
In fact, it also displays the ratio of dofollow backlinks.
Yes, you can get all this information for free.
Go and steal new backlinks opportunities by spying at your competitors.
4. Robots.txt Generator
Robots.txt Generator is next mention in this list of best free SEO tools. It allows you to generate robots.txt file to your blog within in seconds.
Robots.txt files tells search engine robots which page should crawl and which not.
Every blog/website must have Robots.txt file. If your blog don’t has one, visit this website and create now. You can use customize option also if you have advanced knowledge.
GTMetrix lets you know the loading speed of your blog. It is very handy. You just need to enter your blog URL and it shows report with page speed score, YSlow score, fully loaded time, total page size and requests.
Best thing is that it also provides recommendations to improve your blog loading time and doesn’t cost you any single penny.
Check you blog loading speed now
SERProbot allows you to check search engine ranking positions for 5 keywords at same time.
Registraion is optional. To check rankings, choose your region (e.g., google.com, google.in, google.co.uk, etc.) and enter domain name & keywords then click Check SERP Now button.
SmilarWeb is my all-time favorite best website traffic estimator tool. It gives you traffic overview report along with total visits within a month, avg. visit duration, pages per visit and bounce rate.
In fact, it also traffic report by countries (e.g., India 35%, United States 10%, etc.)
Best part is that it also gives you information about top referring and destination sites.
Once you know your competitors top referrals sources, you can reach out to them and ask for linking/mention to your blog. In return you can do some favors also for them.
8. Check My Links
It’s a Google Chrome extension and checks the activity status of links real- time. That means the analysis can be done while you are surfing the web.
Active links are highlighted in green colour while broken links are displayed in red colour. So, you can carry out a broken link analysis with a glance only.
Though this tool doesn’t serve every SEO need of a webmaster, I think it is a valuable one. Why because broken links are the graveyard of a website regarding SEO.
9. Link Explorer by Moz
Link Explorer is a must have link building research tool. It gives you information about domain authority, linking domains, inbound links, and ranking keywords of any website.
Even it lets you download CSV files of all links, follow links, linking domains, top pages and more.
Using this tool, you can spy at your competitors and steal link building opportunities & content ideas (top pages).
To use this handy tool, you need to create an account first and then enter a URL of a website which you wish to track and hit enter. That’s all.
10. SEO Audit Tool by Found
SEO Audit Tool by Found helps in identifying common SEO issues of a website. Also provides insight about Canonicalization, Sitemap, Robot.txt, Loading time, Heading analysis, Image analysis, etc.
You can also find out if the site uses redirection or not. Every blog uses either the http:// version or www version and redirects the other one to the first. Most of the tools never find out this redirection. But Found’s SEO Tool wins over here.
If you get impressed by the free analysis, don’t hesitate for a second to sign up for the advanced version. It’s going to give you more insights about your blog (or any other website).
Keyworddit doesn’t work like other traditional keyword research tools. While it fetches keywords from subreddits and displays along with monthly search volume.
It is easy to use. Simply type any niche and it will shows you a list of relevant subreddits then pick one from then and click on get keyword.
Hunter.io is an amazing tool to find all email addresses of an organization or a website. You can make 100 request per month with free account.
It displays email addresses with a confidence score and a verified icon.
Even you can also find the email address of a particular person working in an organization if you know his/her name by entering name and organization name.
I must say it can be proved very useful in link building outreaching. Hence, I listed this among best free SEO tools.
13. Attracta SEO Tools
Attracta SEO Tools sends a weekly SEO report of your website for free of cost! You can get some additional benefits after signing up.
Once you register your account, you will be asked to enter the name of 2- 3 competitors. Then, Attracta will monitor their SEO status and then compare the same with yours. Each week, you will be provided with a graph demonstrating the SEO performance of your website and your competitors’.
Plus, the free version offers you another two features. If you find it’s difficult to be indexed by search engines, you can use Attracta’s sitemap submitter tool. Another service is penalty checking.
Nowadays, Google is very smarter that they are rolling out regular algorithm updates to send low-quality websites to hell. So, you can make use of Attracta’s tool to find out whether your website is blacklisted or not.
14. SEO Spider
Screaming Frog SEO Spider lets you analyze the SEO status of your website.
It focuses on giving more insights about URL specific problems like broken links. SEO Spider is a must have tool for the larger website as the analysis of a massive number of URLs can be exhausting.
Also, you can export the link analysis results into an excel file. If you are the user of Moz Pro or Raven SEO, you know they have the option to upload a list of URLs in the form of CSV files.
In SEO Spider, you can convert the results into a CSV file and save it, so that it can be used on the tools I mentioned earlier.
But the free version has only limited features. Still, it is one of the best free SEO tools.
15. Hubspot’s Website Grader
Hubspot’s Website Grader is another completely free website analyzer.
It analyzes every website regarding four criteria, Performance, Mobile Readiness, Security and SEO. The three former things (Performance, Mobile Readiness, and Security) are factors that influence search preference of a website.
Performance means how fast your website is. Mobile readiness refers to the ease of access your website offers to mobile users. Security is very essential for every blog because you have to make sure that all the codes and files your website uses are malware-free.
On the homepage, you can see two text fields. One for entering the email address and the other for the website URL. Once, you enter the two info and press Enter; a sensible report will be provided.
You can expect a score in between one and hundred. For getting a perfect score above 80, you have to have good on- page SEO status, as well as better backlinks, profile (read no spammy links).
As this tool is completely free, you don’t have to worry about limited features or trial version.
16. Varvy’s SEO Overview Tool
Varvy’s SEO tool provides a detailed insight on every single important SEO checklist within a minute. You only have to insert a website URL, press enter and sit back. That’s all. Even a signup is not needed. They are giving everything for free.
Some of the elements the Varvy’s SEO tool checks are links, domain strength, image SEO, page/ technical SEO social counts and mentions, page speed, and many more.
They provide you three types of messages. The red messages indicate they are severe while yellow is caution and green is for good optimization.
I wonder how they come up with such an in-depth report in less than minute. If you think I am exaggerating about Varvy’s SEO Overview Tool, you can check the status of your website for yourself.
It’s completely free. And I am pretty sure that you will not get disturbed by their emails as any email address is needed for a basic checkup.
ContactOut focuses more on outreach than SEO. It basically helps you find E-mails and phone numbers of brand owners, website admins, heads of staff and basically anyone else.
It claims 99% accuracy on the verified emails. Comparatively, it also claims being able to find contact information for 75% of the western users.
There’s no rocket-science needed to use ContactOut. It offers a Google Chrome extension which can be installed on your browser. One click on the extension and it’ll bring up leads and contact information
These profiles can be saved and shared with others. It even offers “folders” for better organization. Exporting the collected leads/contact information is possible as well.
There’s a 100% free trial offered although it requires a non-free Email (email@example.com).
Nightwatch is an all-in-one SEO tool with an extremely easy to use and understand user-interface. It’s primarily a keyword and backlink analysis tool, with quite a few side perks. It’s capable of fetching reports from Google, Yahoo, Bing, Duck Duck Go, Google places, and even Youtube.
Upon login, you only need to enter the keywords you wish to track for your website.
Alternatively, you can also click on a button labelled “auto discover”. This automatically scrapes keywords relevant to the website. Extremely helpful if you aren’t sure which keywords exactly you wish to track.
Moreover, you can choose to either track only desktop, only mobile or results on both the devices. Extremely advanced geo-centric searches too are possible and you’re allowed to enter a country, city/region or even district to track results from.
As soon as that’s done, it automatically lists all your competitors for you. Or, you can add competitors manually.
Detailed reports displaying which keywords went up/down, a graph displaying the no. indexed pages, average position, total keywords etc. is shown.
Detailed backlink tracking as well as site audit are some of its other primary selling-points. The audit contains data such as overall site health, all links which have a scope for improvement (with suggestions), load-time of every single page, SSL details and a lot more. The tools and reports can even be white-labelled.
Totally a newbie? The company sends automated e-mails containing step-by-step tutorial on how to get everything done on the site.
These all were best free SEO tools which you can use performing many SEO activities like keyword research, fixing broken links, competitor analysis, monitoring website traffic and many more.
I have done my job. Now it is your turn to use these best free SEO tools to improve your search engine ranking. If you have any query, drop a comment below now.