36 Free SEO Tools To Optimize Your WordPress Blog

If your blog has a professional scope, but you can not afford an SEO specialist to accompany you, you may want to find free SEO tools to optimize and track your natural SEO autonomously.

There is now a host of SEO tools and software that can help you audit your site, search for keywords or content ideas, identify significant errors that you may be committing to referencing. And I determined to share with you those that I find particularly interesting.

What are the tools Used for SEO?

36 Free SEO Tool List for 2017

  • Google Analytics
  • Google Search Console (Webmasters tools)
  • Screaming Frog
  • Xenu’s Link Sleuth
  • GT Metrix
  • Pingdom Tools
  • PageSpeed Insights
  • Google Mobile Compatibility Test
  • AMP Format Test
  • Google Structure Data
  • W3C Validation
  • Open Graph Debugger
  • SSL Labs
  • SmallSEOTools
  • SEOQuake
  • Redirect Path
  • Broken Link Checker
  • Copyscape
  • Siteliner
  • XML Sitemaps
  • Majestic
  • Web Developer Tools
  • Answer The Public
  • Ubbersuggest
  • Keyword Shitter
  • Google Suggest
  • Keyword Tool.io
  • Google Keyword Planner
  • Google Trends
  • Serposcope
  • Splunk
  • Wayback Machine
  • Gephi

Free SEO tools for your WordPress blog

1. Google Analytics

Google Analytics is an evident tool. Many webmasters even don’t know exectly how to detect SEO problems via Google Analytics.

Identify pages that do not receive enough organic traffic, pages that have an unusually high bounce rate or exit rate, catch load time problems or view mobile browsing, see if the traffic you have received since search engines are qualified, identify sites that make links to yours, and so on.

Best Free SEO Tool

Google Analytics

There are even SEO dashboards that you can install on your Google Analytics account from the free dashboards library (Customization> Custom Reports> Import From Gallery).

2. Google Search Console

An essential complement to Google Analytics, Google Search Console is much more focused towards natural SEO. It can allow you to detect errors follow the links you receive, clicks from Google and the keywords used to find your site.

Best Free SEO Tool

Google Search Console ( Google Webmaster Tools )

You can also just export all this data to give you a real history of your positioning and performance over time.

Not to mention the ability to submit a sitemap to Google listing all the URLs of your pages to help the search engine index them. Do not hesitate to read my detailed article on Search Console to go further!

3. Screaming Frog

Screaming Frog allows to crawl a site and to highlight many technical problems such as title and meta description tags missing or not meeting the standards. Duplications of titles, pages that do not receive enough internal links or that are difficult to access in the site tree, pages too weak in content, 404 errors, mismanagement of multilingualism and much more problems.

Free SEO Tools for blogger

Screaming Frog

Screaming Frog is a free SEO tool up to 500 URLs. If you have a small site, you will be able to carry out a complete technical audit for free, and if you have a site that exceeds 500 URLs, you will still be able to identify recurring problems. Indeed, if you commit “type” errors that can be spotted on a sample of 500 pages, you will know that they must be corrected on the rest of the site.

It’s a software that I use every week as part of my work.

4. Xenu’s Link Sleuth

Xenu operates on the same principle as Screaming Frog: you give it the URL of a website and it will crawler this site by highlighting some weaknesses in architecture or SEO optimization. It is only available on Windows, but it has the significant advantage of being completely free without limit of the number of URLs studied.

Free SEO Tool List

Xenu Link Sleuth

5. GT Metrix

GT Metrix lets you know the speed of loading a web page and identify the elements that cause delays.

I will recommend creating a free account that will allow you to benefit from more options than going to the site as a single visitor. For example, you can choose the server from which you test your site, follow the speed of connection from different browsers, with/without advertising blocker, and so on.

Free SEO Tools for wordpress blog

GT Metrix

It is necessary to check the pages individually, but by taking a few standard pages on your site, you will find that you often find the same problems from one page to the other and you will thus be able to implement global solutions that will benefit the whole site.

6. Pingdom Tools

Pingdom Tools is another free tool that can test the loading speed of a site. I find it much less complete than GT Metrix, but if you are not comfortable with the ergonomics or operation of GT Metrix, Pingdom Tools may be able to help you!

Web page speed test SEO Tool


7. PageSpeed Insights

Another tool to test the speed of loading its site but this time it is more to see how well you respect the good practices issued by Google. Just enter the URL of a page on PageSpeed Insights, you will get technical optimization tips to improve the loading time on mobile and the desktop.

Google Page Speed Test

Google Page Speed Test

It is a hard tool that gives sour notes, but at least you will know what you stand for!

8. Google Mobile Compatibility Test

Having a site accessible on mobile is now essential regarding referencing, and Google provides you with a free SEO tool to test the mobile compatibility of your site.

9. AMP format test

The AMP format makes it possible to propose very refined versions of its pages for a more comfortable consultation on mobile. Google here again set up a free tool to verify that your site does not contain any AMP implementation errors.

Read More: 16 Original Link Building Techniques That Work (Again) to Improve SEO on Google!

10. Testing Structured Data

Today, more and more WordPress and blog themes are using structured data. This is information added in the code of a site to help Google better understand your content. For example, a shopkeeper will use it to highlight the name of his shop, address, opening hours, etc.

Structured data can dramatically improve the click through rate in search results; I see it regularly on my blog culture where my book reviews are more visible thanks to the presence of small rating stars related to structured data.

Google offers a free SEO tool to know if the structured data are used on your site but also to test the accuracy of the code.

11. W3C Validation

Regarding code, there are good practices, and in the same way that one can make spelling errors in English, a developer can make mistakes by writing his code. The W3C sets standards of what a well-written code is and you can test your site to see if it contains many errors or not.

Being realistic, I have not crossed a 100% valid W3C site for years. Today, between the CMS used, plugins added, customizations, tracking tools or advertising, it is almost impossible to achieve perfection!

On the other hand, this type of tool can be useful for detecting a very poorly coded theme, likely to affect the user experience.

Read More: Apply These 12 Secret Techniques To Improve On page Seo Factor

12. Open Graph Debugger

Open Graph tags were created by Facebook to make shared URLs more attractive. Instead of seeing a simple text, we will be able to display an image, which immediately links much more aesthetic. In my opinion, this can promote the virality of a link and indirectly help a page to gain visibility. You can enter the address of a page on the Open Graph Debugger to see how it appears when sharing on Facebook and identifies errors.

In the same spirit, Twitter offers a validator of Twitter Cards.

My opinion on the issue is very subjective, but I think an aesthetic link is more likely to be shared, retweet and therefore touch in more readers, liable to discover your site, create links to it, etc.

13. Test your SSL certificate with SSL Labs

SSL Labs! If your site is in https, you can enter the URL on SSL Labs and get a free evaluation of the security level of your SSL certificate.

14. SEO tool to test the markup of your pages

The SmallSEOTools website offers a free tool to check the hierarchy of title tags on your pages. This is a good way to understand how to organize content to highlight relevant information.

Read More: High Authority Website To Get Free Backlink

15. Open Site Explorer

Open Site Explorer is an SEO tool proposed by Moz, which makes it possible to obtain the domain of a site and the page authority of a page.

Open site Explorer by Moz

Open Site Explorer

These are indicators between 0 and 100, which take into account several dozens of factors predominantly dependent on the links received by the site or the page. They follow a logarithmic scale.

16. SEO Quake

SEOQuake is a free extension for Google Chrome allows you to analyze each page and get a quick diagnosis of the most important points needed to optimize your natural referencing as well as tips.

17. Redirect Path

Another free extension for Google Chrome, which allows you this time to view the redirections in place on a page.

18. Broken Link Check

BrokenLinkChecker checks up to 3000 pages; this online tool allows you to scan a site to identify broken links.

19. Copyscape

This online tool allows you to detect the possible plagiarism of your critical articles on the web. The free service Copyscape is limited, but it can help you identify if your main articles, receiving the most traffic, have been copied elsewhere without your knowledge.

free seo tools plagiarism checker


20. Siteliner

After the external duplicate content, detectable via Copyscape, Siteliner allows you to detect duplicate content internally.

21. XML Sitemaps

The sitemap lists all pages to index your site in an easy to understand format for search engines. You can submit one to Google via Google Search Console and then verify that there is no significant gap between the number of URLs indexed by Google and the number of URLs present in the sitemap.

The XML Sitemaps allows you to create free sitemaps of up to 500 URLs. It is better, if your site allows, to opt for a sitemap that updates in real time, I use Google XML Sitemaps for my part.

22. Majestic

Majestic is a paid tool, but its free version can give you two interesting indicators on your link profile: TF & CF (Trust Flow & Citation Flow) The Citation Flow provides an idea of the propensity of your site to receive links from other sites. Trust Flow refers more to getting links from trusted sites.

23. The Web Developer Toolbar

Free extension available including Google Chrome, the Web Developer Toolbar allows you to bring up code errors, image optimization issue, to test the display of the site without Javascript, etc.

Free SEO Tools to Optimize & Create Content

An important part of the work of SEO is to write content in line with the expectations of users. Searching for keywords and content ideas is therefore essential. It is also by a list of keywords that one can study the evolution of its positioning.

Then we continue the list with free SEO tools dedicated to the contents!

24. Anwer The Public

On Answer The Public you choose the language from the drop-down menu, you enter a subject, and the site takes you out a mind map full of questions that surfers are asking and information they are looking for.

25. Ubersuggest

You enter a theme, choose the language that suits you, and Ubersuggest gives you a lot of expressions that you can use in your articles. You can download them to retreat all of these offline proposals or classify them for future topic ideas.

26. Keyword Shitter

Enter a word, get a shit of keyword ideas. Hmm, a bit vulgar but the title of this tool means “the key words chatterer.” To go to the toilet, that’s it.

27. Google Suggest

It’s all stupid, it’s free, and it’s great! You go to Google, you start typing the topic that inspires you, and Google Suggest will spontaneously offer you a list of ideas for content. If it succeeds in making them emerge, it is partly because these are subjects that interest users so they can also inspire your articles!

28. KeywordTool.io

KeywordTool is a costly and quite expensive tool, but its free version can give you a host of keyword ideas to use. The only restriction is that it will not give you the search volumes associated with each keyword, but you can work around it by combining several tools.

29. Keyword Planner

I use this tool-less and less, accessible for free by signing up on Google AdWords. Keyword Planner gives you keyword suggestions from an expression you enter as well as an estimate of the associated search volume.

30. Google Trends

I like Google Trends because it allows you to spot the seasonality of the topics you approach and their popularity over time. The operation is effortless: you enter a term, Google Trends gives you search trends over, by period and country.

For example, if I take a very seasonal topic like “How to decorate tree“. we see that the peak of searches on Google begins in early December. This means that if you want to deal with the subject, the articles must already be ready and indexed before this time!

Free SEO Tools To Go Further

31. Serposcope

Almost all the tools to follow its positioning on Google are paid, until the day I discovered Serposcope! Free SEO software, Serposcope allows following its natural SEO but also that of its competitors on a list of keywords. It runs on Windows, Mac, Linux, and can be installed both on a computer and on a server.

32. Splunk

The significant trend in natural referencing, log analysis allows to study the behavior of the search engine on a site, to locate the badly crawled pages, to raise problems of the architecture of the contents, and so on. Log analysis tools are often costly.

Splunk offers a free trial version up to 60 days of use and 500 MB of logs per day, which is ample enough to perform an overall site analysis at a time.

33. Wayback Machine

Wayback Machine is not the first tool that comes to mind when talking about natural referencing, but it can have a particular utility: to go back into the memory of a site, whether it’s yours or that of a third party. It may help to understand why a problem has arisen, to remember when a major overhaul or change took place on the site.

free seo tools for website

Wayback Machine

34. Gephi

This free tool can allow you to build visualizations of the internal mesh of a site. It is not within reach of a beginner, and there are more ergonomic paying tools to do this work, but if you do not want to shell out a penny, Gephi is there!

Some WordPress Extensions & WordPress tools

Here are some free extensions that can help you optimize your natural SEO on WordPress:

Yoast SEO: Yoast SEO will help to write titles and meta descriptions on your blog, manage to the index of contents, avoid duplication and more. I use Yoast SEO for my part, which I have proposed a detailed tutorial to set up well.

Google XML Sitemaps: A quality extension to create a sitemap.

Udinra All Image Sitemap: Classic sitemap extensions do not include pictures. If you have a blog that is very visual, it can be useful to have a sitemap dedicated to images, and this plugin is there for that. Being realistic, Google Images is sending almost no traffic since they changed their interface.

A cache plugin: for free, look at the W3 Total CacheWP Super Cache or WP Fastest Cache that is powerful and can help you improve the loading speed of your blog.

Broken Link Checker: To spot broken links anywhere on your blog – including in comments, this extension will help you.

SEO Redirection: do you change the address of a page? A redirection plugin allows you to quickly set up a permanent redirection to keep the positioning acquired on the search engines to a maximum.

ShortPixel: this image optimization plugin allows your visuals to maintain a reasonable weight so as not to hinder the loading of your pages, by the best practices recommended by Google. I tell you more in an article dedicated to ShortPixel.

Let’s not forget the search engines themselves!

The free SEO tools are numerous, and I am far from having included in this article all those that I use or that can serve more punctually to understand the specific problems of a site better. But there is one not to be overlooked: the search engine.

The common site:, accessible both on Google and on Bing, can allow you to list the pages of a site indexed by the engine.

The search engine can also help you flush out duplicate content, locate competitors on a given keyword, find content ideas by looking at how a topic is handled by sites that appear on the front page of a specific term.

Consider using the “private navigation” mode to have more neutral search results: Google adjusts its results according to your browsing habits and using personal navigation makes it possible to have more neutrality.

I hope this list of free SEO tools will help you in your optimization process. Being realistic, if you start in SEO, it is likely that this avalanche of tools is more disconcerting than anything else!

I see it on a periodic basis in my job: What often makes the difference between a “junior” profile, a beginner, and a more rounded profile is the ability to go beyond the data that can take out any tool to offer a valid analysis and determine an actual strategy.

It is also what makes the added value of a professional: anyone can enter the address of a site in a tool and get a score, a list of errors. But from there to be able to understand this which is serious, what is less, which plays a lot or very little on the SEO, there is a margin 🙂

To cross this margin involves time, work, curiosity, tests and even errors sometimes!

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