22 min read

What are the Best SEO Plugins for WordPress in 2021?

What are the Best SEO Plugins for WordPress in 2020

In this season and era that the world has become digitized, website owners must use Search Engine optimization to get their content viewed on the web. With a significant percentage of internet users searching content and products, companies, and websites have realized the golden ticket that SEO holds. 

It is now essential to use unique keywords, optimize keyword longtails, and produce great readable content for both desktop and mobile users. It is also fundamental to compress your images to help your website compete for the front page of Google and be among the top SERPs. You probably know by experience and statistics that search engine users barely click past SERPs’ front page.

How then, do you get your WordPress to get traffic and front-page landing for great and engaging content? The goal is to prioritize SEO for your website or a WordPress account to compete with other great WordPress sites out there. 

You can choose the best SEO plugin for WordPress for free; some offer freemiums with an upgrade option, and others are pay-to-use plugins. The use of SEO analyzer WordPress plugin can help you detect and fix SEO issues and get SEO reports all for free.

Below is a list of the best SEO plugins for WordPress 2021 that will help you improve your search engine success:

1. Yoast SEO

This WordPress plugin ranks top among the most used WordPress SEO tools and the oldest in the field. You can easily download Yoast SEO plugin for WordPress on online platforms. With millions of users from the local and international sites, it has received great reviews and thousands of 5-star ratings for its impressive functionalities. 

Yoast has an amazing user interface and user-friendly option with a bi-weekly update that gives information on how to use the wordpress plugin and provides SEO courses for everyone. 

Yoast plugin features focus on helping you generate great content for your website. It shows you how your site will look in search engine results on different platforms, including Google, Facebook, and Twitter. 

The plugin also helps you create your XML sitemaps, which saves you much trouble trying to code it yourself. Yoast will give you internal link recommendations that you can use to direct users to other pages. It also offers a page analysis tool that is perfect for ensuring that your content is appealing and acceptable. Here is how:

  • The plug performs a readability check on your pages, checking for discrepancies like the need to break up paragraphs, add bullet points, and add meta description templates to make your page attractive for SERPs.
  • Yoast checks for duplicate content and alerts you to avoid being penalized by Google.
  • It will check for your keyword optimization; if you have used your keyword enough times or too many times. Yoast will offer suggestions on how to spread your keyword throughout your content for a better structure. 

Yoast SEO has an $89 annual package with added features like 24/7 support, ad-free interface, a redirect manager, internal linking suggestions, and content insights, including the ones outlined at the top. To get these features and more, don’t forget to download Yoast SEO plugin for WordPress. Here is what that plugin looks like:

What are the Best SEO Plugins for WordPress in 2021

2. Broken Link Checker

When Google crawls through your website and finds broken links, it will see this as a bad user experience. Your WordPress probably has several internal and external links from different sources, and you may not have control over all of them. For example, missing pages and images from other websites that you had linked in your content may become broken links if they do not have redirects.

Broken Link Checker will scan your content and reveal all broken links by placing them on a list. You will then be notified about them on the dashboard or via email. The best part is, once the list is revealed, you do not have to go to the pages one by one, looking for these broken links. You can perform the fixing, editing, and deleting of these links right on the Broken Link Checker tool. The plugin also offers an option function where it can make broken links display differently in post.

When the plugin is active, it will perform its operations continuously, scanning for your content and notifying you of any broken links. However, this may slow down the activities of your site if the plug is left active throughout. A recommendation is to enable it when going through your links and disable it once you have fixed any link issues. Here is what that plugin looks like:

What are the Best SEO Plugins for WordPress in 2021

3. RankMath

RankMath works like a tutor, providing you with tips and insights on your posts as you write your content. The plugin will be sending alerts on your WordPress dashboard, so you do not have to leave the site to check for the quality of your post. 

RankMath works together with Google Search Console as a ranking factor. It lets you know the keywords you are ranking for by using its snippet preview, enabling you to augment titles and meta descriptions and alert you on SERP errors that Google is likely to notice.

Additional features of the plugin include internal linking recommendations, 404 monitoring, XML sitemaps, and redirections. It is also great with speed; you won’t have to worry about its operations slowing down your site. 

4. All in One SEO Pack

As the name suggests, this plugin is a one-stop-shop for all your SEO needs, with over 2 million active users on WordPress. It is an easy-to-use plugin that does not require experience for you to get started on it. The plugin has similar features to Yoast SEO, offering a free starter pack with essential functions that you can upgrade to a paid premium version. 

The features of this plugin include:

  • It can generate and submit XML sitemaps to search engines such as Google.
  • Checking your posts for duplicate content and helping you avoid them.
  • Increase your presence on the web by optimizing your titles and automatically generate meta tags.H

Here is that plugin:

What are the Best SEO Plugins for WordPress in 2021

5. SEO Squirrly

SEO Squirrly is another SEO tool that is extremely easy to use for anyone, especially non-experts in SEO. It is among the best free SEO plugins for WordPress 2021 and gives real-time virtual assistance as you type in your content without any complicated fundamentals. It begins to work when you start typing on your keyword. As you continue writing your content, this virtual assistant activates greenlights to guide you in using that desired keyword in your content.

SEO Squirrly can also analyze your competition’s content and help you find ways to outrank them. It will give you customized information on how to improve your website’s ranking. Besides, you can keep track of your progress by the weekly reports the plugin generates.

Another excellent use for these reports is when you are outsourcing writers. You can share the reports with them after they submit write-ups to help them learn and understand SEO. Here is that plugin:

What are the Best SEO Plugins for WordPress in 2021

6. Google Analytics by MonsterInsights

Google Analytics is used to track website visitors, and Google Analytics plugin by MonsterInsights makes this more manageable and less time-consuming. It places all the data you need on your dashboard and saves you the hustle of moving back and forth between website and Google analytics. Other features include external and internal link tracking, a beautiful dashboard within WordPress, and access to both numbers of visitor and interest reports. For example:

What are the Best SEO Plugins for WordPress in 2021

7. All in One Schema Rich Snippets

Rich snippets are search results with additional visual data like videos, reviews, recipes, star ratings, and events. The All In One Schema Rich Snippets is a plugin that will add these rich snippets for you, something that WordPress alone does not offer. This plugin is popular in ecommerce sites and page results. 

With this plugin installed, your users have easy access to your information without going through many steps. Google also appreciates this because getting information about your content won’t be an overly intrusive scan. The rich snipes plugin also helps other sites like Facebook that received your shared content with proper compiled information. Here is this plugin:

What are the Best SEO Plugins for WordPress in 2021

8. SEOPress

SEOPress is a freemium plugin with all-in-one SEO needs for those who do not want to install too many plugins. SEOPress is ad-free even in its free version with simplicity to enable you to manage all your posts.

The plugin helps create XML and HTML sitemaps, content analysis for your content’s SEO, check traffic to your site using Google Analytics, and manage redirections. Other features include:

  • 404 Monitoring
  • Linking your social media account to your site with Open Graph and Twitter Cards
  • Redirecting attachment pages to their file URL
  • Redirecting attachment pages to post content
  • Local business SEO
  • No footprints
  • White label in backend and front end

9. The SEO Framework

The plugin is lightweight with no ads and is built for smaller websites than large enterprises/corporations. SEO Framework is for beginners who are more focused on getting it right with SEO while also maintaining high site speeds.

The plugin is unbranded, enabling it to blend well within the WordPress interface, as though it was part of it. A colored meter scale lets you track your post progress as you type, enabling you to know when it is ready for SERPs. You are also able to tell where to put more work on your post to optimize its SEO.

The plugin ranks among best WordPress SEO plugins with the help of some extensions like Incognito mode and Local SEO for advanced usability. SEO Framework is also free; you get features you can match in Yoast without premium features. For example:

What are the Best SEO Plugins for WordPress in 2021

10. ShortPixel

ShortPixel is a comprehensive image plugin for adjusting images without losing quality. It is a lightweight plugin that you only need to install and forget about it, and it will continue to perform its functions. Once installed, you can resize your past images and files with one click, and any new photos you subsequently upload are automatically resized and optimized in the background.

The plugin offers both lossless and lossy compressions, depending on what type you select. Optimized images directly impact user experience and page speed. This is an example:

What are the Best SEO Plugins for WordPress in 2021

11. Redirection

The simple WordPress plugin has its functionality self-descriptive in its name. It is a free plugin that helps you to track and manage 404 and 301 errors. Its redirect manager is made to monitor changes in posts or permalinks and generate a redirect to a new URL. For example, a page you deleted that has a backlink is preserved by creating a 301 redirect, which this plugin manages. 

Redirection is very helpful for you when your site transfers data from one location to another and instructs Google on where to go to get this information. Here is that plugin:

What are the Best SEO Plugins for WordPress in 2021

12. Google XML Sitemaps (free)

Google XML Sitemaps, as the name suggests, is a plugin that generates sitemaps to enable Google crawlers to see your content structure and index it. Creating content and hoping that search engines will find it and index it can be daunting. This plugin eases this stress by doing the work for you and making your visibility easy to catch. 

Additionally, the plugin also updates your sitemap every time you publish new content. Google XML is free, easy to install, and easy to use. It is also hassle-free and amazing to use. This is what that plugin looks like:

What are the Best SEO Plugins for WordPress in 2021

13. W3 Total Cache

Have you ever stopped your work and gone to your computer setting to clear the cache because sites are loading slowly or not loading at all? Right. As you know, site speed is an important ranking factor for Google and equally crucial for excellent user experience. W3 Total Cache (W3TC) is an excellent plugin for speed optimization through caching to reduce download times. 

Besides, this caching plugin helps in prompt page views, saves bandwidth usage, and improves web performance. The plugin is also free. That plugin is below:

What are the Best SEO Plugins for WordPress in 2021

14. SmartCrawl

SmartCrawl functions are like Google XML Sitemaps by helping search engine crawlers to find your WordPress content. The plugin makes use of procedures like sitemaps, optimized titles, and automatic keyword linking. It is also easy to set up and customize to suit your preferences. Here is this plugin:

What are the Best SEO Plugins for WordPress in 2021

(Image credit: greengeeks)

15. SEMrush SEO Writing Assistant

SEMrush is one of the best free SEO plugins for WordPress 2021. It is a widely recognized brand that offers excellent toolkits to help you in SEO. Once you have an account with SEMrush, they will provide you with one template for free, and you can upgrade to have access to their WordPress plugin.

SEMrush Writing Assistant, like RankMath, checks your content as you type, giving you insights and recommendations according to your keywords. As a result, you can produce improved content that can compete with the other materials out there. The plugin compares paid traffic to organic traffic and shows you how to better manipulate your Google ads to drive more people to your website. Here is that tool:

What are the Best SEO Plugins for WordPress in 2021

16. WPtouch Mobile Plugin

Google appreciates mobile users worldwide and understands that more searches come from mobile devices such as phones or tablets lately. That is why it is a great idea to have your website mobile-friendly. However, you may not have the time or resources to upgrade your website; WPtouch Mobile plugin comes in handy.

Once you install this plugin, a mobile-friendly theme is added, and you can tailor mobile appearances on your site. You do not have to worry about the plugin interfering with your desktop-visitors display mode; it won’t. Example below:

What are the Best SEO Plugins for WordPress in 2021

17. Ahrefs

Keyword optimization is one of the algorithms that Google uses to rank your website. Ahrefs WordPress plugin enables you to do keyword research and find those who have high traffic. You can track your keyword alongside those of your competitors and compare your sites’ performance. 

The plugin also has a backlink analysis that drives your keyword placement to develop content for your WordPress site. You are also able to see update backlinks every time there are updates and text anchor these backlinks.

18. Rankie

Rankie ensures that you have enough data to make the right SEO decisions. How does the plugin do this? The plugin tracks your rankings, creates, and sends reports to you, which you will use to understand modifications you need to make of your pages to achieve great results on SEO. Here is that plugin:

What are the Best SEO Plugins for WordPress in 2021

19. All in One WP Security and Firewall

Any company or website, big or small, can fall victim to security breaches. Experiencing a security breach is a severe issue that will significantly affect you and your users. To be extra safe is better than to be sorry. All in One WP Security and Firewall Plugin protects your website by checking security features such as password strength. It will also help you know your security strength by giving a score based on your existing setup. This is the WP Security plugin:

What are the Best SEO Plugins for WordPress in 2021

Diib®: Seamless WordPress Integration!

In conclusion, as you work hard to create great content for your WordPress site, learn about the best SEO plugins for WordPress 2021 highlighted above. Choosing the best SEO plugin for WordPress plugin is a gift for any WordPress account, and you can start with one or a few from SEO specific features to wide-ranged features. Diib Digital interface seamlessly integrates your WordPress analytics with our User Dashboard, bringing you the latest metrics for your website. Here are some of the features we know you’ll love:

  • Customized Objectives give you simple tasks designed to optimize your WordPress site, including plugins
  • Alerts that tell you about your Domain Authority other technical SEO issues
  • Bounce rate monitoring
  • Post performance
  • Broken pages where you have backlinks (404 checker)
  • Keyword, backlink, and indexing monitoring and tracking tools
  • User experience and mobile speed optimization

Click here for your free scan or simply call 800-303-3510 to speak to one of our growth experts.


The WordPress platform gives you many SEO friendly themes, plugins and other tools designed to make your website thrive and rank on Google.

Yoast SEO is a great all-in-one SEO plugin for your WordPress site. It is easy to use and has features that will help to optimize your site, analyze your content and meta keywords, manage duplicate content and notify you of most technical issues. So..yes, it is good for SEO

Quite possibly the largest difference in these two plugins is the price. RankMath is absolutely free, while Yoast has a free model, but for all the bells and whistles you’ll pay more for access. RankMath premium features are free.

YES! You can do SEO on your own for no money at all. With research, perseverance and a little knowledge, you’ll be well on your way to understanding all the best practices for SEO.

Any newly developed websites, including WordPress ones, take 4-6 weeks to show up on search engines. WordPress automatically sends notifications to Google with each new post and page update.

Welcome to diib! Our analytics platform syncs to your Google Analytics account (not required to start) in just 60 seconds and helps over 250,000k business owners affordably grow their website by showing them how to grow. We offer a free basic website scan and a variety of PRO memberships starting at just $29.99 a month.

With so many members we are also able to provide wholesale pricing combined with very high-quality work on services such as:

  • Quality backlink development (DA10-DA80 websites)
  • Professional Google Analytics installations
  • Website speed analysis and optimization
  • Keyword research
  • Article writing and publishing (500-5000+ words)
  • Create your free account by entering your website below and we’ll be able to show you all the other services we offer to our members!

Daniel Urmann

Author Bio:

Daniel Urmann is the co-founder of Diib.com. Over the past 17 years Daniel has helped thousands of business grow online through SEO, social media, and paid advertising. Today, Diib helps over 150,000 business globally grow online with their SaaS offerings. Daniel’s interest include SMB analytics, big data, predictive analytics, enterprise and SMB search engine optimization (SEO), CRO optimization, social media advertising, A/B testing, programatic and geo-targeting, PPC, and e-commerce. He holds a Master of Business Administration (MBA) focused in Finance and E-commerce from Cornell University – S.C. Johnson Graduate School of Management.

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