wordpressThe search engines are a primary source of traffic for most websites. Once website owners become aware of that fact, they find themselves wondering “which is the best SEO plugin for WordPress?”

Yes, as a content management system (CMS), WordPress by default is SEO-friendly. But there are several free plugins and tools that can not only improve your SEO rankings but help you increase your website’s traffic size as well. Improving your SEO efforts will help take your website to the next level.

Here are 9 of the best free SEO plugins:

1. WordPress SEO by Yoast

Possibly the best free SEO plugin for WordPress, Yoast’s WordPress SEO has everything you need to effectively manage SEO on your site.

WordPress SEO allows you to add proper meta descriptions, meta keywords, and SEO titles to each page and post on your site. You also have the ability to customize titles for your front door page, archives, category, and tag pages. You can add metadata, sitemaps, and Twitter cards, plus ping search engines with the included Open Graph protocol.

There are so many great features included in WordPress SEO by Yoast. It’s a very good thing that you can easily find help and support for this plugin on the internet. Give it a try and you’ll see why it’s one of the top, all-time WordPress plugins.

2. SEMrush

Marketing pros use SEMrush to study analytics and insights from competitor’s websites to help improve their own SEO. And that’s just one of the great features SEMrush has to offer.

With SEMrush, you can find organic keywords to rank for, find ways to build backlinks, gain insights on the marketing strategies of your competition and more. While many have subscriptions to SEMrush, they do offer a free account that gives you an impressive amount of data and lets you try before you buy. This is definitely an SEO plugin to consider.

3. Google Keyword Planner

Google is the place to get data and insights. Google’s Keyword Planner Tool gives you a way to gather your own keyword ideas and it’s completely free! Anyone can use the tool.

The tool itself was intended to show potential Google advertisers the keywords available for them to bid on in possible advertising campaigns. It helps you select strong keywords and backs up the keywords presented by showing you search volume estimates, number of results, and the difficulty levels for each. In short, it can help you identify keywords that will help you outrank your competition.

4. All in One SEO Pack

This SEO plugin isn’t as comprehensive as SEMrush, but it has a number of useful features to help you maximize your SEO efforts. All in One SEO Pack is easy to use and most can use it right out of the box.

Here you’ll find support for Google Analytics and sitemaps along with a tool that highlights duplicate content. This plugin generates meta tags, includes integration for e-commerce websites, and includes a system status box.

5. KeywordTool.io

For a free keyword research tool, Keyword Tool is one of the best. This tool allows you to generate potential keyword ideas by typing in any keyword. The results are generated from Google’s auto-suggest feature. These suggested keywords are a wealth of information as they are based on how often a keyword is used in a requested search.

This tool is free for anyone to use and works quickly. It can be used to optimize your WordPress site’s content. It also allows you to harvest keyword suggestions from YouTube, Bing, and App store too.

6. Open Site Explorer

Open Site Explorer by Moz is a free tool that lets you check data for any given domain name. From there, you can discern who’s linking to the entered domain name and what anchor text is being used for their links. This tool also offers information about linking domains, top pages, pages linked to your website and more.

Open Site Explorer is free but you are limited to a fixed number of daily searches. There’s a subscription service available for even more information and features if you like this tool.

7. Broken Link Checker

Most website owners know broken links have a negative impact on your site’s user experience. But did you know they also have a negative impact on your SEO efforts? Your website should be checked periodically for broken links, especially if it’s been around a while, and any such links should be immediately fixed.

Broken Link Checker is a free plugin that locates any broken links on your WordPress website. It then helps you fix the links without having to edit your individual pages and posts. That’s convenience!

While this is a free plugin and very useful, it uses a lot of resources and can slow down your server. Some web hosting services have blocked its use for that reason.

8. Rel NoFollow Checkbox

When you link to another website, you’re giving a recommendation to that site and boosting its authority. Don’t intend to do that? Use the nofollow attribute to such links. You can use the dofollow attribute when you want to give authority to helpful websites.

Rel NoFollow Checkbox is a WordPress plugin that simply adds a checkbox in the insert link popup of your WordPress editor. That same popup already allows you to have the links open in a new web browser tab. With this tool, you will also have the option to use the nofollow attribute in your links by checking a box.

9. Squirrly SEO

Squirrly SEO is a great free WordPress plugin that helps manage your SEO strategies. It plays very well with WooCommerce too.

This plugin offers some great features like on-demand audits, keyword ranking, real-time content analysis and more. It includes integration with Facebook, LinkedIn, Pinterest, and Twitter with support coming soon for search console and Google Analytics. It’s definitely worth a look.


These 9 plugins cover a wide range of SEO related topics. Determine what your SEO priorities and needs are and select accordingly.

By upping your SEO game, not only will you rank higher in the organic search results for the keywords that matter to you, you’ll increase the volume of targeted traffic to your website and increase your audience for greater success.

About the Author

Gigi W is an inspired writer and digital marketer. She is part of the team behind Noria, a digital marketing agency based in Thailand. She often writes about SEO, ASO, Content Marketing and User Engagement.