Best free SEO tools to optimize your website in 2021

Free SEO tools:

1. Screaming Frog

Screaming Frog SEO Spider tool is a desktop application. Regardless of the Platform(PC or Mac, Linux) you can download and run it on your local PC, regardless of platform. 

Screaming Frog helps find all the Websites On-Page SEO issues Quickly.

Screaming Frog collects issues with page titles, descriptions, and URLs, Issues with Image Sizes and Missing Alt texts, redirects, URLs blocked by robots.txt, external and internal links and their status, the security status of links, metadata, page response time, page word count, Canonicalization, link anchor text, server, and link errors, and many more.

You can download and install it on your PC. It can crawl up to 500 URLs for Free. To Access Advanced Features like analytics integration, you need to buy a license.

2. Xenu’s Link Sleuth

 Xenu’s Link Sleuth is one of the best free tools for On-Page SEO. It is Popularly Known for finding Broken Links of a website. (404 Errors). 

It is a free desktop software developed by Tilman Hausherr. This software provides many opportunities that enable you to perfect your ongoing SEO.

3. Google Analytics

Web analytics is very important to track and understand the Visitor’s behavior to deliver better results and grow your business.

Google Analytics is a popular and free web analytic tool you can use to collect website data.

4. Google Search Console

Google Search Console is a free tool that lets you monitor and resolve server errors, site security issues like hacking and malware, site load issues. It gives insights into how your website is performing in organic search for various keywords and the adjustments you can make to improve your website performance in Google search results.

Unlike Google Analytics, Search Console gives information on traffic that is coming from web search only. It won’t give info about traffic from ads, site referrals.

5. Chrome DevTools

Google’s web browser, Chrome, has built-in developer tools for testing a website. This is a set of tools made for debugging and web-authoring

 The Chrome Developer Tools are also known as DevTools give Website developers access to the internal workings of the web apps and web browser.

With the help of DevTools, You Can find the styles, scripts that are used, etc. You Can debug and Find the errors that exist on the page. You can change the toggle styles completely or can turn them off or on the styles.

6. MozBar

The MozBar is a free web browser extension that is available for Google Chrome and Mozilla Firefox browsers that gives valuable info about Moz’s metrics for a website or a page and its link profile for SEO purposes. 

It gives information about websites on-page metrics vital to SEO, such as the meta tags, alt text, meta robots, etc. as well as insights on the link profile of a domain & a webpage, such as Domain Authority, Page Authority, or the number of backlinks. It Can also Highlight the DoFollow and NoFollow links.

7. Small SEO Tools

Small SEO Tools is one of the favorite old SEO Websites. It contains a set of over 100 SEO tools where each tool performs a dedicated task. 

In this Small SEO Tools list Apart from traditional toolsets like backlink and keyword research, you’ll also find plenty of hard-to-find specific tools such as pdf tools, JSON tools, proxy tools, etc.

8. Google Mobile friendly test

Usage of the web on mobile devices is increasing rapidly.

Designing your websites to be mobile-friendly assures that your webpages perform well on all devices.

Google Mobile-Friendly Test Tool is a free tool that tests the responsiveness, compatibility of a website on mobile devices.

If your page isn’t mobile-friendly, it will point out the specific areas to improve or correct.

9. Google rich results test

Rich results are developed to highlight key information and help search engines understand a webpage’s purpose as precisely as possible. This indicates less guesswork for Google and more relevant results for audience.

Rich results are created by rich snippets and new rich cards – offering more image space and a carousel feature. To get better results for your site, you’ll need to tag up.

10. Link Tools

Tools to find, evaluate, and process backlink opportunities.

11. Disavow Tool

The disavow links tool was launched in October 2012. This tool helps to recover a website from google penalties by demoting the bad links that are gained by negative SEO practicing or by the violation of google policies. Good backlinks help in increasing the position of a website and Bad backlinks may cause severe problems. You have limited control over which links point to your website. Google’s Disavow Links Tool allows you to tell Google to ignore particular links for ranking goals.

12. Local SEO

Google My Business (GMB) previously known as Google Places for Business gives businesses a wonderful opportunity to appear in Google search results just by creating a Google My Business listing which is free.

Google My Business allows you to list your business location on Google Maps and local search results including the opening/closing hours, upcoming events with contact details, and a link to your website.

13. Google Review Link Generator

Google reviews are undoubtedly important for all the businesses online, not Just Local Businesses. The quality and quantity of your Business Google reviews not only influence your search engine ranking but also change your potential customer’s opinion. 

For customers to give you a Google Review, the method should be simple and fast. Google Review Link Generator provides you a one-stop link you can send to your customers or clients to make them easily leave a review for your business on Google.

14. Mobile-Friendly Test

Google’s April 2015 Mobile-Friendly algorithm update that gives priority ranking to websites that are declared as “mobile-friendly.”

Google even developed a tool to help people prepare for the above-said update.

The increase in mobile searches has been on the rise for years and now more of Google’s searches are performed on mobile devices rather than desktop devices in over 10 countries that include the US.

A mobile-friendly website is one that displays perfectly on mobile & hand-held devices such as iPhone, Blackberry, Android, and as well as your iPads & tablets. These websites are also known as responsive web designs, that will “respond” to any device or display, be it your mobile phone or your 46″ LCD screen. This gives a streamlined experience while viewing the website.

15. SEOQuake

SEOquake is a web browser plugin developed by the most popular digital marketing platform SEMrush, which enables you to view important SEO metrics and insights of a particular webpage, SERP analysis, and keyword analysis just with a click of a button.

You can also get more in-detail information by observing their SEO Page Audit that opens in a new browser tab. The extent of information given is invaluable, infusing the key metrics into one place and making it easy to find, understand and use at once.

You can find SEOquake in the Chrome web store and add it to your Chrome bar.

16. Google Tag Manager(GTM)

Google Tag Manager is a free tool that assists you in managing and deploying marketing tags on your website or mobile application without having to change the code.

Working of Google tag Manager

Information from one data source like your website is shared with another data source like Google Analytics through Google Tag Manager (GTM).

Google Tag Manager is like a handy toolbox, that helps in managing many types of codes in one place.

Example: Google Analytics, Google Adwords, Google Adwords Conversion Tag, Google Adwords Remarketing Tag, Facebook Pixel code or Any other custom HTML/Javascript code.

17. SimilarWeb

SimilarWeb is a competitor analysis tool that evaluates the total amount of traffic different websites get. It lets you see your competitor’s top traffic sources, divided into six major categories, including social traffic, referral sites, paid traffic, and top search keywords.

The free offering is confined to five results per metric which is enough to grab a quick data point.

 You can use SimilarWeb to notice more detailed information about which referral sources are most important among your competitors or in your industry.

If you update to SimilarWeb Pro you get access to a host of features, including device distribution, audience information, and traffic share from various social media platforms.

18. Wayback Machine

The Internet Archive is a non-profit organization established by Brewster Kahle based in San Francisco, California that has been building an online library of internet sites and “other cultural artifacts in digital form” since 1996. Its aim is “to provide Universal Access to All Knowledge.” 

However, the Internet Archive only collects publicly available web pages. It does not archive pages on secure servers, pages that require a password to access, or pages that are accessible only after a visitor submits an online form.

Why internet archive?

Terabytes of data are lost every day due to inevitable damage to hardware systems, this is where the Internet Archive acts as a data saver and helps in data recovery.

Internet Archive helps the business owners study the history of high-value homepages which gives insight into how website navigation and page formatting has changed over the years to meet the needs of users. 

 It also gives a great way to observe the improvement of your top competitors where you can trace a URL or group of addresses over a selected time, and take notes of the major changes made. By Observing these insights you can avoid the mistakes your competitors have made, and learn from the consistencies that helped them to stay ahead.

19. Page Speed Insights

Page speed is defined as the amount of time it takes to present all the content on a specific page or the amount of time it takes for a browser to receive the first batch of information from the server.

In 2017, Google announced they will give page speed even more consideration, incorporating mobile site speed to rank sites on its “mobile-first” pages, or pages that individualize rankings for mobile sites. 

Every webpage HTML code, CSS style elements, various JavaScript files, images, videos, and other multimedia and so much more – affect the page speed. 

You can find your page speed with Google’s PageSpeed Insights. 

20. Yoast SEO

Alternatives: All in One SEO Pack, SEOPress

Every website needs an SEO plugin because SEO is often the most important factor for a website’s growth. Not doing SEO or Not following SEO best practices will surely affect your website’s performance and rankings. that’s why every site needs Yoast SEO Plugin.

Yoast SEO helps in checking and fixing technical errors in SEO elements like the meta title and meta descriptions, canonical, structured data, readability analysis, site structure, internet linking, etc.

Because Yoast carefully follows all the SEO news and makes sure that the plugin is adapted to the SEO changes.

21. Robots.txt Generator

Create a correct robots.txt file in an instant so search engines know how to crawl your website. Advanced users can customize their files with Robots.txt Generator as well.

22. Hreflang Tag Generator

Add hreflang tag to your site to make Google understand the language you have used in your site. so that Google Can look for those pages in that language.

23. XML Sitemaps

Without registration you can create a Sitemap for upt 500 pages for free.

You Can also download the sitemap in XML Format or get it through Email.

24. Also Asked

AlsoAsked.com generates the flowchart of the the Questions that most people ask and also the questions from Google People Also Ask Section.

So, that you can create content for those questions.

25. Google Trends

With Google Trends you can view the topics that are trending based on the location, category, and search type. Check the related topics, Popularity for things by region, most frequently searched terms etc.

26. Link Explorer

With Link Explorer you can view the complete backlink profile of a website. Check the graph of PA, DA, LD by time.

27. Scraper

Scraper is a chrome extension that enables you to scrape data from any URL and export into a google spreadsheet.

28. GTMetrix

Find the loading speed of website with GTMetrix, it also gives the 

information about page load issues and the steps to take to optimize load speed.

29. View Rendered Source

With this chrome extension you can check how a browser renders a page, that includes modifications made by JS (javascript). Differences between raw and rendered version are shown step by step.

30. Merkle’s Schema Markup Generator

Create JSON-LD Markups for articles, events, breadcrumbs, FAQ pages, and how-tos with Merkle’s Schema Markup Generator.

31. BuzzSumo

Know the information about the best performing content for a particular keyword and the influencers behind it for a given it with free features of BuzzSumo.

32. Hunter

Find all the important email addresses associated for a given domain with Hunter chrome extension.

33. LSI Graph

Find all the related keywords for a particuar topic with LSI Graph. Check their search volumes, trends, CPC, and Competition.

34. Google Alerts

You can get an alerts if your mentioned by an online outlet. You can use it to monitor your competitors activity.

35. Google Data Studio

Google Data Studio lets you create interactive dashboards and reports.

It integrates with Google’s suite of tools, which makes it easy to merge data from places like Google Search Console, Google Analytics, etc.