Top 7 Free On-Page SEO Checker Tools to Optimize Your Blog Posts

One of the most important things in SEO is on-page optimization.

No matter how good you’re at keyword research or building backlinks, if you’re not taking care of your on-site SEO, you won’t get better results.

If you’re looking for the best on-page SEO checker tools, this post is exclusively made for you where we’ll talk about some of the most effective SEO tools you can use for on-site optimization.

We’ll also talk about all the benefits of using these tools along with pricing and how to use those tools to properly optimize your on-page SEO. Are you ready? Let’s jump into the details.

7 Free Best OnPage SEO Checker Tools to Use In 2024

onpage seo checker tools 2024

1. Semrush On Page SEO Checker

Semrush is one of the best all-rounder SEO tools that you can use to perform everything from finding great keywords to estimating traffic of any site to competitor research.

Most people don’t know that Semrush offers an on-page SEO checker tool to easily help you with your website optimization process. So let’s talk about this tool from Semrush.

What can you do with this tool from Semrush?

  • Analyse Google ranking factors
  • Get practical suggestions to increase your rankings
  • Compare your page with top 10 results so you get more insights

How does this tool from Semrush work?

Here’s how you can start using it.

Step 1: Sign in to the Semrush dashboard, go to projects to find “On-Page SEO Checker” to setup a project with your website (or your client’s website).

Once it’s done, it will show you an overview of your website to improve your site’s on-site SEO.

Here’s how it looks like;

onpage checker

As you can see above, it will give you the total ideas for your website to improve on-page SEO that includes;

  • Strategy ideas
  • Backlink ideas
  • Technical SEO ideas
  • User experience ideas

Start working on the top pages to optimize (which are given by Semrush) according to strategy ideas, backlinks ideas, technical SEO ideas, content ideas etc to optimize your content well for search engines like Google.

Know your priorities for optimizing your pages using Semrush on-page SEO checker tool.

While optimizing your pages for more traffic from search, it’s essential for you to know your priorities. What do you want most? You need better content ideas or ideas to get more backlinks? You can do almost everything using this tool.

For example, let’s say you want to build more backlinks to your website’s content, you can click on “Backlink Ideas” (shown above) to get ideas for the posts that are proven to get you more backlinks.

Here’s how it looks like;

backlink ideas

As you can see above, Semrush tool is giving us suggestions on how we can get more backlinks by properly optimizing the pages.

All in all, it’s a great tool if you want to find more content ideas to bring more traffic and backlinks to your site.

How much does Semrush cost?

Semrush currently has 3 pricing options which are listed below;

  1. Pro starts at $129.95 monthly
  2. Guru starts at $249.95 monthly
  3. Business starts at $499.95 monthly

If you want to get a 14 days free trial from Semrush Pro account, you can use the following link.

Browse More:

2. On Page Grader from Moz

Do you want to boost your search rankings along with your on-site SEO? Then, you will be thrilled to use on-page grader from Moz which gives you a checklist of recommendations to improve your on-page optimization.

What can you do with on page grader from Moz?

Here are some of the things you can do with this tool;

  • Gives you insights to help you target important keywords
  • Helps you improve your content
  • Helps you rank higher for your targeted keywords no matter what niche you are in
  • Also helps you increase your organic traffic (by giving you insights about your on site SEO)
  • You can also perform competitor analysis to find relevant topics and rank for those keywords on Google search

How does on page grader work?

Sign up for Moz and go to on page Grader. Then enter a URL along with the keyword that you’re trying to rank for. Here’s how it looks like;

moz page grader

As you can see above, you’ll find all the keywords that your page is currently targeting along with the page factors that are helping and hurting (which also gives you a page score, the higher it is the better optimized your page is).

Just start working on those page factors which are hurting (it also gives you suggestions on how to optimize your content).

How much does Moz pro cost?

Moz Pro is currently offering four various pricing plans which are listed below.

  1. Standard
  2. Medium
  3. Large
  4. Premium

Standard is best for beginners and costs you $99 per month with limited features. But it’s more than enough for most beginners with the access to all of their SEO tools including on-page grader.

Medium plan gives you full access to their keyword research tools without any limits and costs you $149 per month.

Large plan is perfect for small businesses where you can uncover most of the best features with more limits and costs you $249 per month.

Premium plan offers all the premium features like massive crawl budget and unlimited user seats per account and costs you $599 per month.

The great thing about using SEO tools from Moz is, you can get access to any of the above mentioned plans for free for 30 days. So go give a try to them.

Read: Moz vs Semrush: An Honest Comparison By a Full-Time Blogger
Read: Best Moz Alternatives to Try to Improve Your SEO

3. On-Page Optimization Analysis from Internet Marketing Ninjas

This is another incredible free on site SEO checker tool which gives you a detailed analysis of a web page. It shows you the word count, internal and external links along with the keyword density so you will know how optimized your content is.

What can you do with on page optimization analysis tool from Internet Marketing Ninjas?

You can use this tool to perform all the things mentioned below;

  • This tool is extremely helpful for analyzing your internal links,
  • Helpful for your meta description and
  • Helpful for easily analysing your page content so you can get better search rankings

In fact, this tool is a combination of the following tools which ultimately helps you get better rankings through proper on page SEO.

  • Metadata tool which displays text in title tags and meta elements
  • Keyword density tool which reveals onpage SEO keyword statistics for linked and unlinked content
  • Keyword optimization tool which analyzes on page optimization by showing the number of words used in the content, including anchor text of internal and external links
  • Link Accounting tool that displays the number and types of links used within your web pages
  • Header check tool which shows HTTP Status Response codes for links so you can find out if something goes wrong
  • Source code tool which provides quick access to on-page HTML source code for better analysis

How does this tool work (by Internet Marketing Ninjas)?

Go to their website and enter your domain or any landing page with the keywords you’re already targeting (you can enter up to 5 keywords) and then click on Ninja Check to continue.

It instantly gives you all the information of your page;

onpage tool

As you can see above, you can find all the information such as title tags, meta desc, total word count of the page and also the keyword density. It also shows you the information about your internal and external links along with the server code so you can easily find out your broken links if there are any.

How much does this tool from Internet Marketing Ninjas cost you?

This is a free tool to use and provides you a ton of information about your on site SEO to get better rankings and improve your content for both readers and search crawlers.


As the name suggests, this is a complete site checker tool that helps you optimize your on-site SEO along with the ability to fix all the technical related issues you’ve within your website.

What can you do with site checker pro?

Here are a couple of major things you can do with this tool;

  • Instantly check your titles, descriptions, H1-H6 tags, size of the page etc to properly optimize your on site SEO
  • Find all the technical related issues that are keeping your website search rankings at stall
  • Easily scan and analyse all your internal and external links to quickly find out if there are any issues with your backlink profile
  • It also gives you recommendations of SEO site checkup to make your website mobile friendly and bring more traffic from search engines like Google
  • It also gives you a Page Score which is their internal rate based on combination of valuation of critical errors, warnings, notices and Google Page Speed results

How does Site Checker Pro work?

Click here to visit their tool and enter the domain of your choice and hit enter to get a detailed SEO report of the domain.

Here’s how it looks like;

seo report

From the above illustration, you can find that it is showing us a page score along with all the critical errors and warnings that you can rectify in order to bring more visibility from search engines like Google.

How much does Site Checker Pro cost you?

It offers a free version where you’ll have limited features but if you want better features with more limits to perform a detailed SEO analysis of your web pages, then it offers the 3 pricing plans.

  1. Basic (costs you $29 per month where you’ll have access to 1500 URLs to crawl per month and you can include 3 active websites)
  2. Startup (costs you $49 per month where you’ll have access to 5,000 URLs to crawl per month and you can include 5 active websites)
  3. Growing (costs you $99 per month where you’ll have access to 50,000 URLs to crawl per month and you can include 10 active websites)

You’ll be getting the following features as common in all the above 3 plans.

  • Unlimited landing page analysis
  • Check 100+ on-page SEO parameters
  • Use how-to fix guides
  • Download PDF reports

5. SEO Analyzer from Neil Patel

If you’re blogging for a while, you might have already heard about the SEO expert Neil Patel who launched SEO analyzer tool which can be used as a perfect on-site checker tool to improve your website’s visibility in search engines. It’s completely free to use and gives you a detailed SEO report along with suggestions.

What can you do with SEO analyzer?

Here are few amazing things you can do with this tool from the SEO expert himself Neil Patel;

  • Gives you a detailed website analysis report where you can find all the issues, errors and warnings that your website is currently struggling with
  • Page level SEO score is given to you along with the page speed score with recommendations to improve both of them
  • Social media insights are provided to help you hone your content marketing strategies and get better results from it
  • Marketing checklist can be provided so you can focus on what’s important and get results from search engines like Google
  • Competitor analysis can also be done to know better about yourself where your website stands in front of your competitor websites

How does SEO analyzer work?

Click here to visit Neil’s website and enter your website’s URL to start analyzing it for on-site SEO and audit report.

Top 7 Free On-Page SEO Checker Tools to Optimize Your Blog Posts

It gives you an overall on-pageSEO score along with errors and warnings (if you’ve any) along with the page level speed score to better optimize your site for faster loading times. Not only that you can also find out the keywords along with competitor analysis and you can do so much more.

How much does SEO analyzer cost?

It’s c free to use and if you want more features, you can go with their premium plans which are listed below.

  • Individual plan costs you $120 (lifetime access)
  • Business plan costs you $200 (lifetime access)
  • Agency plan costs you $400 (lifetime access)

6. SEOptimer: Free SEO Audit & Reporting Tool

If you want to find out how well your website is optimized for search engines like Google, you should definitely start using this amazing free tool called SEOptimer.

What can you do with SEOptimer?

You can use SEOptimer to do the following things effectively;

  • Helps you identify problems on your website
  • An in-depth website analysis is provided you
  • On site recommendations are provided to help you fix your site issues
  • You can also use it to generate white label SEO reports so you can land more clients and increase your income
  • Gives you access to other great SEO tools so you can bring more search traffic to your sites by also fixing your on site SEO related issues

All in all, SEOptimer gives you a detailed website analysis using 100 website data points and provides you actionable recommendations so you can boost your search rankings along with your on page SEO. In addition, SEOptimer also gives you access to extremely helpful tools like;

  • Meta Tag Generator
  • Keyword Generator
  • Robots.txt Generator
  • .htaccess File Generator
  • XML Sitemap Generator

How does SEOptimer work?

Click here to visit SEOptimer website and enter your website to analyse how optimized it for SEO and performance. Here’s how it looks like;


As you can see that it gives you grades for each section ranging from SEO to performance to social to security along with the suggestions so you can fix what’s stopping your website from getting more traffic from search engines.

How much does SEOptimer cost?

The tool is free to use but it also offers premium pricing packages which are listed below.

  • DIY SEO plan costs you $19 per month
  • White Label plan costs you $29 per month with unlimited White Label PDF reports
  • White Label & Embedding plan costs you $59 per month which offers all ‘White Label’ features + build a custom Embed Audit Form to generate leads 

7. SEObility

SEObility offers a wide range of SEO tools you can use to improve your on-page optimization to get more rankings on Google.

What can you do with this tool?

It also gives you access to all the following features;

  • Website crawling
  • Site Auditor
  • Google Rank Tracker
  • Backlink Checker
  • Continuous Monitoring
  • Whitelabel Reporting

How does this tool work?

Once you’re on the website, go to SEO Checker and enter your domain to find a detailed overview of the website which also gives all the on-page suggestions.

Here’s how it looks like;

Top 7 Free On-Page SEO Checker Tools to Optimize Your Blog Posts

How much does SEObility cost?

It offers a free plan along with the following two premium plans.

  • Premium plan costs you $50 per month
  • Agency plan costs you $200 per month

The most important thing in on site SEO

Did you know the most important thing that makes a huge difference in your on-page SEO? It’s checking your content and pages for duplicate content because Google literally penalizes your sites if you’ve duplicate content or pages.

So how do you improve your on-site SEO by eliminating duplicate content? For that, you need a tool like Copyscape.

Copyscape is a great plagiarism checker tool that allows you to find other sites using your content or where user-generated content on your site might be duplicated from other websites so you can easily take necessary actions.

What to do when you find someone copying your content?

There will be a lot of people who just copy your content and paste it on their sites in order to get more traffic to their sites. It happened a lot with us and so many people copied our content and blatantly posted it on their sites.

So what we did when we find someone copying our stuff? We immediately contact them either through email or social media and send a solid email to take that content down. The majority of the people who receive those emails will simply remove copied content and we move on. If not, we simply file a DMCA complaint where you can take out that content.

What to do if you’ve duplicate content within your website?

There are various ways of creating duplicate content (by knowingly or unknowingly) and they include;

  • Unknowingly creating the same headlines or meta description for similar content on your website
  • Copying and pasting other’s content on your site (you should never do that and remove all the copied content if you don’t want to get penalized by Google)
  • Give credit where it’s due (if you’re using images or 1 or 2 paragraphs from other sites, make sure to link back to their content by saying it’s a reference so no one will be pissed off)

The importance of using TinEye

TinEye is a free tool that allows you to find other sites using your images through reverse image search. Google & Bing also offer search by image features but TinEye is one of the simplest tools to use for finding accurate image recognition with your own images.

So how can you use it for finding sites that are using images without mentioning your website (so you can ask for credits in the form of backlinks or simply ask them to take them down)?

Just go to their site and upload an image or search by URL or you can also simply drag and drop your images to start your search.

TinEye instantly starts looking for images that are similar to your search term through its huge database (it has an index of over 28 billion images). That’s it, if any of the other sites are using your images without your knowledge, you can simply email them for a link back or ask them to take it down.

The great thing about using TinEye is that it is completely private and safe to use. That means, when you search with TinEye, your image is never saved or indexed and it adds millions of new images from the web every day but your images belong only to you (they are neither stored nor indexed).


Here are some of the FAQs you should definitely know about to get a better understanding of on-page SEO checker tools in 2024 and beyond.

Is on-page optimization essential for websites?

One of the most important things in SEO is on-page optimization. How optimized your web pages determine the success of your SEO. Literally, your website’s on-page SEO can make or break your online success. It helps you bring more search traffic for specific keywords.

Which is the BEST on-page SEO checker tool?

Semrush is the most powerful on-page SEO checker tool. Not only does it help you with on-page SEO but it can also be used for keyword research, backlink analysis, competitor research, etc. Click here to try Semrush free for 30 days.

What is on-page analysis?

On-page analysis or on-site analysis is all about finding ways to optimize a page properly in order to bring more traffic from search engines like Google. It will also help you easily find and fix all the on-site issues that your web pages have so you can minimize your chances of getting penalized by Google and increase the odds of getting better search rankings.

Browse more SEO Tutorials:

Final Thoughts

No matter how good or bad your website is optimized, you can still use the on-page SEO checker tools to improve your website’s presence on Google.

The list of SEO checker tools mentioned here are ranging from free to premium so go check out all of them and use the best one that fits your needs.

What are your thoughts about the tools that are shared here? Share your thoughts in the comments below.

About Author
Anil Agarwal is the Founder of Bloggerspassion. He is a full-time blogger and SEO expert who has been helping people build profitable blogs for over a decade Now. He has been featured in Over 100 Publications including Forbes, The HuffPost, HubSpot, Shopify, Semrush, Kinsta, Bluehost, Hostinger and etc. Know more about Anil Agarwal from here.

Reader Comments (15)

  1. Hello! Sir

    This tutorial is really very helpful for me. I found something that I was missing while doing On sites SEO which is very important to rank in Google.

    Thanks! for sharing

  2. thank you anil sir
    for telling these tools for my on page seo checking and getting it better. generally, I know one or two tools but by this informatic article, I know some good tools also. and thank for it

  3. Almost all of us use SEO checker tools but most of the listed ones are the one about which most of us are even not aware of. Thanks for sharing this wonderful post Anil..

  4. thank you for sharing all tools information given only one post very useful article .i am using SEM rush it is a very good tool for on-page SEO and off page SEO.

  5. Nice article to know the about OnPage SEO tools those really helps. I already SEORCH & SEOptimer from this shared list.

  6. Hello Anil,
    Great stuff,
    I personally use Moz tool for SEO checking. SEMrush is also a awesome tool.
    Thanks for sharing this awesome list.

  7. Hi Anil Agarwal,
    thank you for sharing all tools information given only one post very useful article .i am using SEM rush it is a very good tool for on-page SEO and off page SEO.

  8. Hello Anil,

    I am using SEMrush to analyze the site onpage SEO. To rank better in Google, you have to make your onpage SEO at its best. The tools you have mentioned here are very helpful to check your site whether it is SEO friendly or not. Thanks for sharing these great tools.

    Have a Great day:)

  9. Hi Anil

    I wanna to know that which method is more important to Google to rank first on its page one-page SEO or off page SEO to making thousand of backlink.

  10. Even doing minimal onsite stuff Anil I saw a difference in search traffic. These tools can help you get your SEO game down pat, big time. Google just wants some basic signals from your blog to know what it does and how it benefits people. From there, you can do some smart offsite stuff too – guest posting, etc – and sweet search traffic will find your blog. Always does if you follow the rules.


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