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Top 27 Best SEO Tools To Optimize Websites For SEOers




SEO Tools: What Are They And Why Do We Need Them?

An SEO tool is a software that runs independently or is integrated right on its developer’s website. It supports SEO practitioners in managing, analyzing and utilizing information on the website.

An SEO tool not only can collect various data but can also gauge the effectiveness of different SEO projects. To get the most out of these SEO tools (free or not), do your homework to understand thoroughly about the way they work, their capabilities and benefits.

Definition of SEO tools

Definition of SEO tools

Most SEO tools do not offer full functionality in their free or trial versions, including Ahrefs, Semrush, Majestic, Moz Pro, KWFinder, Keywordtool.io, Screaming Frog, etc.

There are of course free tools for lower-budget projects, but they come with certain functional limitations.

SEO Tools For Website Analysis

Google Analytics

Google Analytics is an online SEO tool that helps users track their website data and analyze customer behaviors to come up with better strategies to expand the reach and conversion.

Google Analytics supports in collecting customer behavior data

Google Analytics supports in collecting customer behavior data

It takes some time to become a Google Analytics expert, but the results are rewarding: higher site rankings, improved traffic and boosted sales.

Google Search Console or Bing Webmaster Tools

These are free SEO tools from Google. Once set up, they make sure Google understands that you are the true owner of the website. Besides the ability to track the number of visitors, Google Search Console also supports the indexing process.

Use Google Search Console to facilitate indexing speed

Use Google Search Console to facilitate indexing speed

Beam Us Up or Screaming Frog

Another free yet popular optimization tool is Beam Us Up, but it is only available on Windows.

If you use an iOS device, try Screaming Frog. Be noted that the free version of this tool has a maximum limit of 500 URLs per website. If you need to crawl more than that number, purchase a license.

SEO Web Page Analyzer

SEO Web Page Analyzer supports comprehensive website analysis. With this tool, you can quickly detect missing elements of content and images such as alt tag, heading structure, internal and external link, meta tag, and so on. After running an audit and making changes accordingly, your website’s SEO effectiveness will be significantly improved.

SEO Web Page Analyzer helps you check and edit multiple website elements

SEO Web Page Analyzer helps you check and edit multiple website elements

Moz Local Listing Score

Moz Local Listing Score is an SEO tool whose main function is to check website images when they appear on the Internet. The tool collects and analyzes data from more than 15 different sources including Google, Foursquare, Facebook, and produces detailed and accurate assessments. Therefore, the final output that you receive is guaranteed to have high accuracy and reliability.

Panguin tool

Panguin tool is a completely free to use SEO software. It tells you how your site is impacted after an algorithm update from Google. Based on this valuable information, you can adjust the site content to accommodate these new changes.

SEO Tools For On Page Optimization


SEOquake helps you evaluate on page SEO elements to see whether your site is properly optimized. Moreover, the tool also supports analyzing data from competitors’ websites.

To use SEOquake, you need to install it in browsers like Chrome, Firefox, etc. One big perk of this tool is you don’t need a budget to use it, and it is compatible with various browsers.

Schema Creator

With Schema Creator, creating microdata schema only takes a few minutes. All you need to do is select the data you want to create, then input the information (included in the schema.org vocabulary) into the tool. Schema Creator will then run an analysis and provide you with the fully marked up schema.

SEO Site Checkup

The SEO Site Checkup tool supports backlink audit. Specifically, it runs an analysis on backlinks, reports on uptime and suggests to you the page loading speed to improve.

Robots.txt Generator

Robots.txt Generator checks and surfaces the incomplete elements on the website. At the same time, it also provides a checklist that can be acted on immediately.

Robots.txt Generator is a popular SEO tool

Robots.txt Generator is a popular SEO tool

Robots.txt Generator allows you to update new content to the site and build other content at the same time. Besides, it also helps Googlebot understand which content is not yet completed and which should be crawled.

XML Sitemaps

XML sitemaps are known as URLs on a web page with the extension .xml. With this tool, you can view all the pages accessible in the article.

In addition, sitemaps facilitate the crawling and indexing process of search engines.

SEO Tools For Link Optimization

Ahrefs Backlink Checker

Currently, Ahrefs is considered the most popular and powerful website analysis tool. Backlink Checker is a useful function included in this tool.

Use Ahrefs Backlink Checker to check the link quality

Use Ahrefs Backlink Checker to check the link quality

Take a look at how Backlink Checker can assist your SEO activities:

  • Support keyword research via algorithms
  • Conduct a research to compile the most trendy content topics
  • Update the rankings of keywords in the article
  • Analyze website technical issues


LinkMiner is a tool that detects broken links on any site. You are just one click away from exporting all broken links to a CSV file which includes all the relevant information such as the operation code and link type.

In case the number of broken links are too many to count, you can filter out those with the most referring domains using the Batch Analysis function.


Semrush is a reputable name in the field of keyword and competitor analysis. Using Semrush, you will get a set of strategic keywords and effective support in the SEO process of your project.

Semrush excels at keyword analysis

Semrush excels at keyword analysis

Moz Link Explorer

In the “Moz universe”, one of the most prominent tools is Moz Link Explorer. This SEO tool helps you collect information about your competitors’ backlinks. Also, it can identify the most commonly used phrases as anchor text to insert backlinks.

To use Moz Link Explorer, just follow these 2 steps:

  • Step 1: Input the URL of the page you want to learn about into Moz Link Explorer
  • Step 2: Receive the information about backlinks of the page

You may also be provided with additional information such as DA (Domain Authority) scores of the backlinks.

SEO Tools For Content Optimization

Ahrefs SEO toolbar

Ahrefs SEO Toolbar can be installed right on the browser to provide you with the following abilities:

  • Check backlinks with Site Explorer
  • Check your competitors’ keyword rankings with Position Explorer
  • Compile the most shared content with Content Explorer
  • Search for potential keywords with Keywords Explorer


This software offers many useful functions, from keyword research and suggestion, checking for duplicate content to checking for keyword rankings, etc. In particular, the keyword suggestion function features a relatively high accuracy for both long and short keywords.

Yoast SEO

Yoast SEO is one of the most recommended tools for SEO practitioners.

Yoast SEO is known as the pal of SEO copywriting

Yoast SEO is known as the pal of SEO copywriting

Yoast SEO promises to help you:

  • Optimize semantic keywords and synonyms
  •  Optimize on page elements for each piece of content
  • Share articles on social networking sites like Facebook, Instagram, etc.
  • Check important information such as sitemaps, robots.txt files, .htaccess files or permalinks
  • Set up a standard URL structure to avoid duplication

Keyword Planner

Google Keyword Planner can show you the most searched keywords at the present. Just provide it with a keyword and you will get a full picture including how competitive it is, how often it is searched for in a week or a month, and much more.


When getting hit by the writer’s block, try Keywordtool.io. Not only can it quickly suggest intriguing and varied ideas for you to choose from, Keywordtool.io also assists you in finding potential keywords for high quality content that matches the user intent.

Google Trends

Google Trends is a website of Google that tells the frequency of the most searched keywords on Google compared to the total number of keywords in a given period of time. After knowing which keywords are trendy, you can use them for website optimization purposes.

Use Google Trends to learn about trendy keywords

Use Google Trends to learn about trendy keywords

SERP Robot

This is a free SEO tool from Google to check keyword rankings. With SERP Robot, you can check the rankings of many keywords at the same time.

An obvious advantage of this tool is that it does not require account registration. Just input the domain name and keyword list, then wait for the analysis results.

In case you want to use more features, a subscription is always available as a choice.

Surfer SEO

Surfer will weigh the keywords and phrases using the statistical measure TF*IDF but it does not depend on how Google uses TF*IDF. Instead of digging up how Google uses TF*IDF, Surfer will update the data continuously and analyze based on the results found.


KWFinder helps you find long-tail keywords with low competition but high monthly search volume and other indicators. Currently, the tool provides 3 packages with different prices.

With a premium subscription plan, you will get more in-depth keyword analysis.

Answer The Public

Answer The Public is a support tool to build content strategies and identify effective questions and prepositions. Besides, it can also compare sentences and letters with related searches that users are interested in.

Develop effective content with Answer The Public

Develop effective content with Answer The Public

SEO Tools For UI/UX Optimization

Google Mobile Friendly Test

Google Mobile Friendly Test helps you test how friendly your website is to mobile users. Just enter the page URL and click Analyze, the system will quickly run an analysis and give suggestions to improve the mobile-friendliness of your site.

Google PageSpeed ​​Insights

Google PageSpeed Insights specializes in optimizing website performance and producing detailed assessments of your site. This tool can gauge the website performance on both desktop and mobile versions.

Optimize your website performance with Google PageSpeed Insights

Optimize your website performance with Google PageSpeed Insights

Through Chrome UX Report (CrUX), Google PageSpeed Insights will give you the most suitable and actionable recommendations to optimize your website.

SERP Simulator

SERP Simulator supports checking whether your content title has reached the standard length. This is a useful tool to help you improve the user experience when doing on page SEO.

Learn more: These SEO tools can help you evaluate your SEO performance.

Final Thoughts

With the list of 27 best SEO tools for website optimization, we hope you are better equipped to join the battle of rankings on Google Search. Feel free to choose the most suitable SEO tools that match your purpose and pocket.

Pay a visit to our website On Digitals to update valuable information about digital marketing. And if you are looking for a website solution to prevail in the online attention-grabbing war, look no further than our SEO services.

Contact us today for dedicated consultancy on your business case.

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