25 Free SEO Audit Tools List for Every Type of Website

Free SEO Audit Tools List

Table of Contents

Digital presence does not end with the creation of a website, rather it is the start of a new life in the digital world. Once, you have created a website, would you leave it, or look for its performance? Obviously, you will check its performance check from time to time to evaluate your SEO strategies.

To check the performance of a website, you need to audit it. Auditing is not as simple as it sounds. There are plenty of parameters, roughly more than 200, that Google and other search engines evaluate to gauge the performance of a website.

So, to assess the performance of your website, one needs to evaluate more than 200 parameters. One cannot audit a website in the present world manually in a life span. So, you need some tools that can help you out and also guide you to optimize your website to appear higher in the search engine result pages.

Moreover, there is a penalty of tools available in the market that can help you to audit your website. Most of them are paid and the free version has some limitations.  But, there are still some SEO tools that offer many free features that are quite handy in auditing.

In this article, we will try to encompass some of the tools used in the SEO world.    

1.  Google Search Console

Google Search Console

The most important tool, which is free and powered by Google is its Search Console. This tool is equally helpful for business owners, webmasters, developers and administrators.  As per Google, this mighty powerful tool helps you to;

  • Find whether your page has been crawled and indexed.
  • It also reports the traffic data on your website. Moreover, the number of clicks can also be found.
  • It can fix indexing and also help you to re-index the new content.
  • It can also help you to find the domains that have referred to you.
  • Moreover, it can also generate alerts for different scenarios, which is very helpful for optimization.

2. Google Lighthouse

Google Lighthouse

Google’s lighthouse is another tool developed by Google and can also be added to Chrome as an extension. It gives real-time data on your website performance. This tool runs some tests on your page and generates a report about the wellness of your page.  It can also find the on-page issues and offer suggestions to improve them.

3.  Page Speed Insights

Page Speed Insights is a powerful tool of Google that gives a detailed report of your page speed, which is very important to rank higher.

Page Speed Insights

4.  Ahrefs


Ahrefs is a complete SEO tool, but it costs some bucks for the full options. But there are penalties for free Ahrefs tools that are very beneficial.

  • It offers a free keyword generator, keyword difficulty checker, YouTube keyword tool, Amazon keyword tool, and Bing keyword tool. All of these tools are beneficial for keyword-related issues on different platforms.
  • Similarly, it offers free tools for link building like a backlink checker, broken link checker, and website authority checker. These bunch of tools help you to find the quality and quantity of backlinks.
  • Ahrefs also offers free tools for SERP and ranking checking like Website Traffic Checker, Checker, and Keyword Rank Checker.
  • Ahrefs also offers free tools like SEO WordPress, SEO tools, and AI writing Tools.

5. Moz


Moz is another all-in-one audit tool that offers many free options. Following are some of its free metrics.

  • Its Brand Authority metric calculates your brand’s strength on a scale of one to 100.
  • Keyword Explorer helps you to find the most relevant keywords for your website.
  • Link Explorer helps you to find link-building opportunities.
  • Free Competitive Research tool helps you to do competitive research, which can help you find link-building opportunities.
  • MozBar helps to analyze any website in your Chrome browser.
  • Apart from these Moz also offers Free Domain Analysis for finding top pages, ranking, keywords, and many more.

6. SemRush


SemRush is another all-purpose tools that have a penalty of free features. Some of them are discussed below.

7.  SE Ranking

SE Ranking

SE ranking is another powerful tool that stands in the league of Ahrefs, Moz, and SemRush. It offers many free features and some of them are mentioned below and more details can be found in this article.

  • Robot.txt Generator and Tester helps you to generate a robot.txt file for proper indexing and then also test it.
  • View as Googlebot feature helps you to find how your website will look to Google bots for crawling and indexing.
  • Redirect Checker helps you to find the status and working of your redirects.
  • CMS Checker helps you to find the CMS of a website.
  • Subdomain Finder helps you to find all the subfolders that are being indexed by the search engine.

8.  SEO Powersuite

SEO Powersuite

SEO Powersuite is also a all-purpose tool that can help you audit your website. It offers 13 free features that can help you audit your website.

  • It offers a free feature to analyze the key site performance statistics.
  • It can help you to find unlimited keywords and build a keyword map.
  • It can help you to track your and competitors ranking on search engines.
  • It helps you to crawl and audit your website.

Many other free features can be found in this article.

9.  Spyfu


SpyFu keyword Research tool is free and is highly required by the SEO experts.  It gives you the volume and keyword difficulty level that is needed to add keywords to your content. It also offers customization according to the location. It is another all purpose tool but offer very limited free features.

10. Answer the Public

Answer the Public

Answer the Public is a handy tool that creates a visualization map of the most relevant keywords and phrases.  It offers this data in the spreadsheet as well for quick analysis.

11. Siteliner


The sideliner duplicate content tool is used to find similar content on a website. It helps you to improve your website and to remove similar content. 

12. Screaming Frog

Screaming Frog

Screaming Frog offers free services for a website that has less than 500 URLs. It crawls your website to diagnose the issues in it.  This is a very powerful tool that helps you to find the links, and optimize your images, meta description, headings, and titles.  The best feature of this tool is that it emulates famous search engines like Google, Bing, and others to gives you real-time insight.

13. Netpeak Spider

Netpeak Spider

Netpeak Spider is another crawling tool that offers 100,000 free URLs and checks over 100 technical and over 80 SEO-related issues.  

14. W3C Validator

W3C Validator tool is backed by the Worldwide Web Consortium that checks your HTML code along with the headings. It provides different options to see how your heading would look on Google crawler.  You can also check your competitors’ websites.

15. Xenu Link Sleuth

Xenu Link Sleuth

Xenu Link Sleuth is another free site crawler that not only crawls your website but also gives a report on internal and external links. Moreover, it also reports the page titles, broken links, redirects, and orphaned pages for better indexing and user experience.

16. DNS Propagation Checker Tool

DNS Propagation Checker Tool

DNS Propagation Checker tool helps you to find the issue with the server settings. Server settings can hurt your website vitals and can decrease your ranking.  A bad server setting can cause slow crawling and indexing.

17. Mobile Moxie

Mobile Moxie

Google ranks your website lower if your website is not mobile-friendly and optimized for mobile users. Mobile Moxie SERP checker is a tool that checks the ranking of your website. It lets you know the ranking among the optimized websites, even at a city level.  Moreover, its Web Page Checker tool helps you to optimize your pages for mobile users

18. MX Toolbox Blacklist Check

MX Toolbox Blacklist Check

MX Toolbox Blacklist Check tool helps you to check whether your IP is backlisted or not. Being blacklisted is detrimental to your ranking and Email deliverability.

19. WPScans


WPScans find the vulnerability of WordPress hosting services. It gives a detailed report that helps to check security threats to your website.

20. SSL Labs Security Checker

SSL Labs Security Checker

SSL Labs Security Checker is a free HTTPS validator. Just like WRScans, these tools also find the safety and security loopholes in your domain and help you to make it more secure and safe.

21. Hacker Target Drupal Security Scanner

Hacker Target Drupal Security Scanner

Drupal Security Scanner is another well-organized security tool that is specially designed for the Drupal-based website. It helps you to make such websites more secure.

22. Gzip Compression Checker

Gzip Compression Checker

Gzip Compression is a powerful feature of a website that shows how quickly your website can be downloaded. Gzip Compression Checker helps you to find this feature of your website so that you can optimize it.

23. OnCrawl


OnCrawl is a crawling SEO tool that offers 100K free URL crawling, 1 project, and 1 Report. This is helpful for a one time project and for more analysis you need a subscription.

24. YSlow Performance Audit

YSlow Performance Audit

YSlow Performance Audit tool is another comprehensive tool that helps you to evaluate approximately 23 parameters. Its detailed report is helpful to optimize your website for better performance in the SERPs.

25. GTMertix


GTmetrix offers it free speed and performance audit tool. It generates reports and compares them will different benchmarks for comparison to improve your performance and ranking.


The famous saying “Nothing is free in this World” is not true when it comes to SEO tools. SEO has evolved into a very well-known but very vast field in the present day. It involves optimizing more than 200 parameters and a lot of data for analysis, which cannot be done manually.

This article covers 25 different tools among which of are all-purpose tools like Ahrefs, Moz, Semrush, SE ranking, and SEO Powersuite, which offer some free features but for complete auditing, one has to pay, depending upon the subscription package and your requirements.

Many free tools offer to evaluate only one parameter of SEO like security, keyword search, crawling, indexing, page speed, etc.

As said earlier SEO is a very vast field and it requires the expertise of many trades, which is very difficult to find in one human being. That is the reason many website and business owners opt to hire an SEO agency for auditing and performance enhancement.

Dlinx Outreach is an SEO agency that has a team of experts in every trade of SEO. We offer many customized plans as per your needs. Our representative will contact you if you need any help. Feel free to contact us to discuss this in depth.

Frequently Asked Questions.

What are the key performance indicator of a website that must be audited?

Content optimization, keyword performance, ranking and mobile optimization are the key performance indicators of a website that must be audited and evaluated from time to time.

Which tools are the best for auditing?

Many SEO tools are equally good in SEO, but Ahrefs, Moz, and SemRush always stand out among them. There offer many key features for free, but for the full auditing you need subscription.

Name any three free SEO tools to check the security loopholes.

WP scans for WordPress, Drupal security Scanner for Drupal, and SSL lab security checker for all website hosting services are free security-related tools.

Is there any free tool to check the mobile optimization?

Mobile moxie is a free tool that helps you check the mobile optimization of your website. It also checks your ranking among the mobile optimized websites of your niche.

Can Dlinx Outreach help you to audit your website?

Dlinx Outreach is an SEO agency that can help you to audit your website and enhance its performance for high ranking in SERPs.

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Haiqa Saleem

Haiqa Saleem

Haiqa is head of content at Dlinx Outreach. She is an avid writer and bookworm and has been with Dlinx since 2019. As a true tech geek and an extraordinary content strategist, she leverages her passion for the digital sphere and love for writing to share her knowledge through insightful content. She writes with a data-driven perspective.

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