best free seo tools reviewed

21 Best Free SEO Tools to Boost Your Rankings

Looking for the best free SEO tools for checking backlinks, keywords, and on-page optimization?

You can save resources and improve workflow with the best free SEO tools.

In this article, we’ve reviewed and tested the best free SEO tools to save you time. Here’s what we found.

Types of Free SEO Tools

We’ve categorized our best free SEO tools into website SEO, keyword research, backlink analysis and link-building, speed tools, and analytics tools.

Keep in mind that the tools we’ve reviewed come in 1 of 3 forms:

  • Chrome extensions
  • Web-based tools
  • Downloadable plugins

We’ll start with website SEO tools.

Best Free SEO Tools for Website SEO

1. AIOSEO Analyzer: Fast SEO Checks

Speed up SEO checks with this free Chrome extension from the All in One SEO team. It works on both unpublished and published web pages.

aioseo analyzer overview

SEO checks include:

  • Title and meta description
  • Internal and external links
  • Headings
  • Image SEO
  • Schema markup
  • Social media OG tags
  • Canonical URLs
  • Sitemap and Robots.txt

The compact display of headings (h-tags) provides a fast way to check for logical structure.

aioseo analyzer headings tab

And you can easily find out if images on a page are missing alt tags.

aioseo analyzer image tab
We used the Analyzer to check image SEO on a blog post and found 15 images with no alt tags.

The Analyzer also provides a quick schema check. If schema is on your page, the associated types and properties will be displayed in a scrollable list.

aioseo analyzer schema check

All of these checks are important to ensure that your website is optimized for search engines and can be easily found by potential customers.

2. SEO Analyzer by All in One SEO: Web-Based Tool

Add a URL and get a detailed site audit with this free SEO Analyzer.

aioseo seo analyzer

The overall site score gives you an idea of how much improvement is needed. Analyzed items are grouped by

  • Critical issues
  • Recommended fixes
  • Good Results

Click on any of those items to get details.

aioseo seo analyzer interface
Clicking on Critical Issues revealed 3 items. Click the arrows at the right to get details on the item.

The report covers basic SEO, advanced SEO issues, and performance and security checks.

There’s a satisfying amount of detail here. Marketers could use it to prepare for sales meetings or discovery meetings.

You’ll also get the option to download the report as a PDF.

3. All in One SEO (AIOSEO) Plugin: Everything You Need to Rank Higher

Want to improve your SEO without hiring a marketer? All in One SEO (AIOSEO) is a 5-star plugin over 3 million people use to optimize their WordPress websites.

aioseo best free seo tools

This plugin analyzes your web pages and provides a checklist (and guidance) for improvement. Readability recommendations are included too.

aioseo sidebar

The price for the premium AIOSEO plugins starts at $49.50/year. But you can get the Lite version for free on This is one of the best free SEO tools available.

Try it out, then upgrade at any time.

Here are some of the benefits of the free version.

  • Improve SEO with an action checklist for each web page
  • Get found by search engines with auto-generated RSS and XML sitemaps
  • Increase click-throughs by using the title tag and meta description checkers.
  • Control how your pages appear on social media.
  • Maximize click-throughs from search engines with rich snippets
  • SEO analysis tool for global, national, or local site audits and recommendations
  • ChatGPT integration to generate titles and descriptions

Upgrade to the Basic or Pro version to get local SEO tools, the ChatGPT integration, Redirection Manager, and Link Assistant.

Download A Free SEO Checklist

Access our comprehensive SEO Checklist with a single click. We’ll deliver it straight to you, putting actionable items with SEO tools and tutorials right at your fingertips.

Enter your name and email to download a free SEO checklist.

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Best Free Keyword Research Tools

Keyword research is the starting point for content that ranks high. And these free tools will help you pick relevant keywords or find out who’s already ranking for them.

4. Free Google Keyword Research Tools

Google provides some excellent ways to get keyword and ranking data, and some of it is hidden in plain sight.

Here are our picks.

  • Chrome Incognito and Google Search: It’s possible to plan content that ranks using these 2 resources. Here’s how.
  • Google Keyword Planner: Create a Google Ads account to use this tool. Check out Google’s instructions for the planner.
  • Google Trends: Get ideas from trending topics. Interest is displayed on a relative scale.

5. Ahrefs Keyword Generator: Get Keyword Ideas

Enter a keyword into the Ahrefs Keyword Generator to get 100 related keyword ideas.

Ten of the 100 will display a related Keyword Difficulty score. These scores make it possible to pick keywords that are easy to rank for.

ahrefs keyword generator

You’ll need to sign up for Ahrefs to access more than 10 Keyword Difficulty scores per search. But you’ll get search volume numbers for all 100/per search keywords.

Ahrefs pricing for the paid version starts at $99/month. It’s well worth it, and you can cancel at any time.

6. AnswerSocrates: Discover Questions People Are Asking

Enter a topic into AnswerSocrates, and you’ll get organized lists of questions searchers have.

answersocrates example

It pulls some of this data from People Also Ask questions in Google Search. The rest of the data comes from Google Suggest and Google Trends.

The homepage of AnswerSocrates also displays data on trending topics.

Add 1 or 2 words to AnswerThePublic, and it’ll generate a series of related topics and questions searchers have.

This information is pulled from Google’s autocomplete data.

The circular display of the data is novel but hard to read on laptop screens.

answerthepublic interface

AnswerThePublic has turned this into a sales pitch for their paid version: “Our visualization is nice. But prolonged use may lead to neck injury if you need to analyse data for more than 5 mins.”

The paid version allows you to export data to a CSV file.

AnswerThePublic provides 3 searches a day for free, but you’ll need to sign up for more data. Plans start at $9/month.

This exciting project, launched by Brian Dean of Backlinko, provides keywords that are spiking exponentially in traffic or are on the cusp of doing so.

exploding topics examples
Above: 2 examples of exploding topics.

The goal is to unearth long-term growth trends, not temporary fads.

You’ll need a paid plan to get access to all exploding topics. Pricing starts at $39/month.

9. AlsoAsked: Discover Relevant Questions

AlsoAsked is a unique tool that lets you explore People Also Ask questions by geography.

Enter a keyword, and results are displayed in an interactive mind map.

The free version provides a handful of searches a day. Paid plans begin at $15/month.

alsoasked seo tool

10. UberSuggest: Keyword Research Tool

Like AlsoAsked, Ubersuggest imposes a tight limit on free searches: you only get 3 daily. So treat this tool more like a free trial with no time limit.

ubersuggest keyword tool
Above: Close-up of the Ubersuggest interface.

Like Semrush and Ahrefs, this tool provides keyword ideas, content ideas, keyword difficulty score, CPC, backlinks data, and more.

Pricing starts at $29/month for 1 domain.

11. Ahrefs SERP Checker: Ranking Research

Enter a keyword into the Ahrefs SERP Checker and see who ranks in the top 4 positions in Google Search.

Sign up for a $99/month account to get more data. Or use Chrome Incognito as a completely free (and approximate) alternative.

12. Semrush SImple Sign Up Account: Keyword and Ranking Research

Semrush and Ahrefs are the industry standard for keyword, backlink, and ranking research.

You can create a simple sign-up account that gives you access to a limited set of Semrush’s keyword research, PPC, and content marketing tools. Note: this differs from their 7-day free trial: the simple sign-up account has no time limit.

Ahrefs offers a similar free plan for 1 domain.

The following tools support backlink analysis and outreach for guest posting.

13. Find Hidden Contact Emails helps you find verified email addresses associated with a website, including for upper management. It’s notoriously good at this and a must-have for outreach.

For quick searches, use the free Hunter Email Finder Chrome extension.

hunter chrome extension

To use the free backlink checker at, enter a domain.

neil patel free backlink checker

Youll be redirected to Ubersuggest: his full-featured keyword research tool.

There you’ll see a graph of backlink growth, total number of referring domains and backlinks, and a thorough analysis.

free ubersuggest backlink checker

Note: You’ll get 3 searches a day on the free plan.

Paid plans start at $29/month. And Ubersuggest is offering new Lifetime deals, that offer significant savings over all competitors.

Ahrefs also has a free backlink checker.

ahrefs free backlink checker

Enter your domain and you’ll get basic stats and a limited list of backlinks.

ahrefs free backlink checker interface

To view all the backlinks pointed to your domain you’ll need to sign up for an Ahrefs plan.

Best Free Site Speed Checkers

Site loading speed can impact your ranking. Here we share 2 of the best free speed analysis tools.

Keep in mind that the recommendations that these tools make are technical, and you’ll need a developer to act on them.

16. Google PageSpeed Insights: Measure and Improve

Google PageSpeed Insights provides everything a coder needs to improve website performance.

With its trademark circular scores, PageSpeed Insights provides overall speed, performance, SEO, and accessibility ratings.

You can toggle between mobile and desktop reports.

google pagespeed insights scores

Scroll down to the audit section to get detailed guidance on improvements.

17. GTmetrix: Detailed Performance and Speed Reports

Add a URL to GTmetrix for a performance and structure grade and “Web Vitals” numbers.

Below those numbers is a wealth of information, including a waterfall chart and tabbed report with details.

gtmetrix scores

The free version of GTmetrix offers 25 weekly tests. Paid plans start at $8.54/month.

Best Free Analytics Tools

Our last category of best free SEO tools are analytics software platforms.

Any of these tools can be used at the beginner or advanced level.

18. Google Search Console: See Your Rankings

Wondering how you’re ranking in Google Search for various keywords? You can find out with Google Search Console.

In addition to ranking data and trends, you’ll get informed of any indexing issues or manual penalties. (As long as you protect your site from hacks and don’t do any black hat SEO, you shouldn’t worry about penalties from Google.)

Good to know: All in One SEO (AIOSEO) includes Google Search Console data in its Search Statistics feature. This feature is available in the Elite version of the plugin.

aioseo seo statistics feature
Above: A view of the Google Search Console integration available in All in One SEO (AIOSEO).

19. Google Analytics: Website Results

Google Analytics provides an amazing amount of data. In addition to the standard page views and traffic information, you can use it to track sales funnels and e-commerce data so you know which pages and marketing tactics are working best.

Good to know: MonsterInsights is a WordPress plugin that pulls Google Analytics data into simple visual displays in the WordPress editor.

20. Looker Studio: Data Visualization and Reports

Looker Studio is Google’s rebrand of Data Studio. It’s used to create dashboards and custom reports from website data.

google looker studio interface

Above: This is a closeup of a Looker Studio report, presenting data from Google Search Console.

Screaming Frog SEO Spider is a site audit tool popular with web developers, designers, and marketers.

It thoroughly analyzes every single link in a website and highlights problems like duplicate content and broken links.

screaming frog seo spider interface

Bonus Tools

  • Bing Webmaster Tools is Bing’s version of Google Search Console. It’s a good idea to create an account for it to get insights into your performance in Bing search results.
  • Mozbar from is an SEO toolbar available for free from the Chrome web store.
  • While you’re working on SEO, get ready to maximize conversions. Our favorite tools for this are OptinMonster and WPForms.

Q&A on Best Free SEO Tools

How do I do SEO for free?

To do SEO for free, we recommend using a WordPress plugin like All in One SEO (AIOSEO). There’s a free version of the plugin, called AIOSEO Lite, available on

All in One SEO will analyze your pages for you and tell you how to improve your SEO.

Lastly, follow this blog and YouTube channel to learn more about SEO.

Does Google have a free SEO tool?

Google offers several free tools that are support SEO decision-making: Google Analytics, Google Search Console, and Google PageSpeed Insights.

Resources on SEO Tools

What’s Next?

We hope this post helped you find some of the best free SEO tools to rank higher.

Next, explore our review of the best WordPress SEO plugins and the best on-page SEO tools.

If you found this article helpful, please subscribe to our YouTube Channel. You’ll find plenty of WordPress tutorials there. You can also follow us on X (Twitter), LinkedIn, or Facebook to stay in the loop.

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author avatar
Sherrie Gossett Content Writer
Sherrie is an SEO analyst based in New Hampshire in the United States. When she’s not busy researching, implementing, and writing about new SEO developments, she can be found hiking and playing guitar.

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4 comments on “21 Best Free SEO Tools to Boost Your Rankings

  1. This is a really cool page. One of the best posts I’ve come across in quite some time. I hope to see more content like this.

  2. An excellent roundup of free SEO tools! This diverse collection caters to various aspects of optimizing website rankings, from keyword research to backlink analysis and site performance. Thanks for compiling this resource – it’s a treasure trove for both beginners and seasoned marketers looking to enhance their online visibility. These tools are a definite asset for anyone aiming to elevate their rankings and drive more organic traffic.