35 Best Free SEO Tools You Should Use 2021 (Online SEO Tools)

best free seo tools

Looking for a list of, useful Free SEO Tools?

SEO tools provide data and alerts about the overall health and success of your website.

They help uncover areas of opportunity and identify weaknesses or issues that may prevent you from ranking and earning visibility in the SERPs.

35 Best Free SEO Tools

Here are the best free SEO tools to help you do your job better

In this post, I will present a list of awesome SEO tools that help you to complete a set of tasks as fast as possible and with as close to perfection as you can get.

The tools are categorized by SEO function.

  • Analytic Tools
  • On-page SEO tools
  • Keyword Research Tools
  • Local SEO tools
  • Link Building Tools
  • Technical SEO Tool
  • Research Tools
  • Other tools

Analytic Tools

1. Google Analytics

Google analytic is the most widely-used web analytics package on earth. Every digital marketer uses Google Analytics. 

google analytics seo tracking tools

It provides a lot of handy data about websites such as the number of site visits, traffic sources, and location demographics.

Provide Data Like

  • Organic traffic
  • Bounce rate 
  • Traffic sources 
  • Time on site 
  • Page speed

2. Data Studio

google data studio seo tools

Google Data Studio lets you merge data from varying sources, such as Google Search Console and Google Analytics, and create sharable visualizations.

3. Mozcast

mozcast google algo temperature
mozcast google algo temperature

Mozcast tracks change big and small to Google’s search algorithm. Also useful are the SERP tracking features showing the prominence of such features as ads and knowledge panels.

4. Keyword Hero

Keyword Hero tool

Keyword Hero works to solve the problem of missing keyword data with lots of advanced math and machine learning. 

This service is free for upwards of 2,000 sessions per month.

On-page SEO Tools

These on pages SEO tools help to optimized page on higher in the search engine.

5. Rank Math

rank math free seo plugin
rank math free seo plugin

Rank Math is a WordPress SEO plugin that helps with on-page and technical SEO.

  1. Adding Page Titles, Meta Descriptions, OG tags, and other meta tags to posts and pages.
  2. Adding structured data markup for rich snippets.
  3. Redirecting URLs.

6. Rich Results Test

rich result test

Schema is hard to implement. But it’s too valuable to overlook: it gives both users and the search engine a better understanding of your pages.

Use this tool to see if your structured data/schema markup was done correctly. 

Different Types of Schema Markup

  • Product
  • Product Review
  • FAQ page
  • Aggregate rating
  • Article
  • Event Schema are built into this extension.

7. SERPSim


SERPSim shows what your web page will look like in Google’s search results. All you have to do is enter your proposed title, meta description, and URL.

8. Yoast SEO Plugin

Yoast seo wordpress Plugin

Yoast SEO is the most installed and popular SEO Plugin for WordPress, with regular updates and new tools.

It’s by far the most robust SEO plugin on the market.

Free Keyword Research Tools

9. Answer The Public

This awesome tool finds questions that people ask on forums, blogs and on social media.

Answer the Public reasearch tool
Answer the Public reasearch tool

Enter a target keyword (one to two words for the best results) and see multiple visualizations of questions and queries for that term.

Note: Answer the Public is a freemium tool. You can do two searches a day for free.

10. Google Keyword Planner

Google Keyword Planner is Google’s keyword research tool.

google keywords planner tools

Google’s Keyword Planner is designed for ad campaigns, but you can use it for keyword research by seeing how keywords perform in ads.

11. Ahrefs’ Keyword Generator

Ahrefs Free Keyword Generator

Keyword Generator is one of the free tools offered by Ahrefs. Generate hundreds of free keyword ideas for Google, Bing, YouTube, and Amazon, complete with monthly search volumes and Keyword Difficulty scores.

12. Keywords Everywhere

Keywords Everywhere is a must-use keyword research tool due to the massive list of sites that it provides free search volume, CPC, and competition data for:

keyword everyware research tools

Keywords Everywhere currently works with:

  • Google Search
  • Google Trends
  • eBay
  • Answer The Public
  • Google Keyword Planner
  • Bing
  • Etsy
  • Google Search Console
  • YouTube
  • Ubersuggest
  • Majestic
  • Google Analytics
  • Amazon
  • Keyword Shitter
  • Moz Open Site Explorer

Keywords Everywhere displays the data right underneath the search box. This tool is completely free, with no paid addons.

13. Ubersuggest

Ubersuggest is a simple keyword research tool that scrapes data from Google’s Keyword Planner for keyword ideas based on a keyword you provide.

Ubersuggest free keyword research tool

Ubersuggest has a lot of features that are usually only found in premium SEO tools.

But it’s 100% free.

Ubersuggest will give you detailed data on keyword difficulty, monthly search volume, and more.

Also offers a lot of extended SEO capabilities such as basic link metrics and top competitor pages.

14. Keywordshitter

Keyword shitter is a bulk keyword finder based of the beloved keyword shitter.

keyword shitter bulk keyword tools

Keyword Shitter is useful to find in a easy and fast way all the combinations of keyword that google suggest, starting from your list.

If you are serious about SEO, use a professional quality tool like SEMrush, Ahrefs or Moz. 

15. Keyword Surfer

This tool is based on Google Chrome Extension.

Keyword Surfer

Keyword Surfer will show you the monthly search volume for your keyword and all similar keywords that you can use for your strategy. 

This Chrome extension gives you keyword search volume in Google search results.

Local SEO Tools

16. Google My Business

Optimize your business for local foot traffic to obtain more customers.

Google My Business listing

This is the #1, must-have tool for Local SEO. 

Google My Business (GMB) allows you to connect with your local customers on the SERP and in Google Maps, all so you can connect with them in real life.

17. Whitespark Google Review Link Generator

Whitespark’s Google Business Review Link Generator creates a shareable Url that lets customers review your business with one click.

18. Local Search Results Checker

Local Search Results Checker

Local Search Results Checker shows you search results from any location—down to the city, town, or even ZIP level.

Link Building Tools

19. Ahrefs’ Backlink Checker

Ahrefs’ Backlink Checker shows the top 100 backlinks to any website or web page.

Ahrefs’ Backlink Checker Tools

It also shows the linked pages, anchor texts, the total number of backlinks and referring domains, and our proprietary Domain Rating (DR) and URL Rating (UR) scores.

20. Link Miner

Link Miner is a free Chrome extension developed by Jon Cooper, one of the masters of link building.

21. Ahrefs’ Broken Link Checker

Ahrefs’ Broken Link Checker

Ahrefs’ Broken Link Checker shows the top ten broken inbound and outbound links for any domain, subdomain, or URL.

Technical SEO Tools

22. Google’s Mobile-Friendly Test

Google’s Mobile-Friendly Test checks how easily a visitor can use your page on a mobile device.

Google’s Mobile-Friendly Test

The Mobile-Friendly Test tool is designed to help you determine if your site is correctly optimized for smartphones and tablets.

The tool also offers suggestions on how you can improve the mobile-friendliness of your site.

23. Page Speed Insights

google page speed insight

This Google Free tool help to find out your website’s page loading speed and how to improve it with Google’s Page Speed Insights.

24. GTmetrix

GTmetrix Website Speed Test Online Tool

GTMetrix analyzes the loading speed of your web pages. Alongside the performance score, it also shows actionable recommendations to make things load faster.

25. Cloudflare

Cloudflare is a free content delivery network (CDN). That help to load faster your content.

Research Tools

26. Buzzsumo

Buzzsumo help to find content for a particular keyword. You can also see social share count estimates for any piece of content. This One of my favorite tools. I personally use and recommend it to you.

27. Hunter

Hunter is a popular email search tool, and definitely the most popular free email finder. It’s free up to 50 requests per month.

28. Wayback Machine

Wayback Machine is an initiative of the Internet Archive. This is useful for a variety of tasks. It’s perfect for uncovering historical data. You can see a website throughout time, including pages that are no longer on the web.

Other Tools

29. Google Alerts

Google Alerts is a content change detection and notification service, offered by the search engine company Google. You can also use it to monitor your competitors.

30. Bing Webmaster Tools

This is much similar to Google Webmaster, Bing Webmaster offers a full suite of website and search analytics. You can find keyword reports, keyword research, crawling dates, and more.

Bing Webmaster Tools exists to help you manage your site’s appearance on the search engine.

31. Link Explorer

Link Explorer measures your backlinks, most popular pages, external linking domains, and anchor text so you can build high-quality links to better compete and thrive online.

32. SEOquake

SEOquake is a Google Chrome Extension that provides you with key SEO metrics, along with other useful tools such as SEO Audit and many others.

33. LSI Graph

LSI keywords can help take your on-page SEO to the next level. Using (Latent Semantic Indexing) LSI keywords in your content helps you rank higher on Google.

34. XML Sitemaps

Having XML sitemaps allows search engines to crawl and index a website sufficiently. Search engines like Google, Yahoo and Bing use your sitemap to find different pages on your site.

35. Semrush

SEMrush is one of the best SEO software that every marketer must use. You can even conduct keyword research, topic research and detailed competitive analysis using this tool.

The tool will quickly analyze the amount of traffic the site receives, the top keywords that are sending that traffic, the total number of backlinks along with the referring domains, and the main organic competitors.

Final Thoughts

The best free SEO tools available at the moment. These Free SEO tools are great, especially if you’re new to search engine optimization.

Free SEO tools are a great option for beginner marketers on a budget as well as SEO professionals.

And these free SEO tools help you build a foundation to these on page seo strategies.

Did we miss any awesome free SEO tools?

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