The 29 Best Free SEO Tools for 2025

Rich Results Test checks whether your pages support structured data for enhanced SERP display. Google Lighthouse is an auditing tool that analyzes site performance, accessibility, SEO, and more. Originally launched as a free keyword tool, Ubersuggest has evolved into a full SEO toolkit.

Content Harmony

seo tools

They’ve also implemented some good AI features to enhance your keyword research process. If you use AI to write your content (and I don’t recommend it), ContentShake AI is one of the better tools we’ve tested. You can customise the writing style, and all the AI features are powered by Semrush’s massive SEO database. So, I spent the last few months testing many popular AI SEO tools across every major SEO category.

SEO Audit & Site Monitoring Tools

seo tools

Yet another free tool from Google, PageSpeed Insights is the perfect SEO tool for discovering issues with your website’s overall speed. Page load time is a bit SEO factor, so being able to pinpoint why your website is loading so slowly can be a huge help in improving your rankability. SEO Anomaly Google Analytics is an awesome free tool for monitoring your website’s overall performance. Simply generate a GA tracking tag, place it on your website, and start keeping an eye on the number of website visitors you get.

seo tools

If you’re able to meet the “People Also Ask” questions in Google SERPs, you’re more likely to rank. Type a word or phrase into the search bar to see how popular the keyword has been recently. This helps you make sure you’re not writing content about outdated topics.

Serpstat

While it is an all-in-one SEO tool, it differs from tools like Ahrefs and Semrush. Test Semrush for yourself with an exclusive 14-day free trial. This includes 5 SEO articles per month and 25 new content ideas per week. It shows you your overall optimisation score and suggests words to include to improve your overall SEO.

  • On specific features, I prefer the link analysis in Ahrefs over the other tools.
  • It provides plenty of handy data about websites, such as the number of site visits, traffic sources, and location demographics.
  • If you want your website to rank higher on Google, then consider adding Ahrefs to your tech toolbox.
  • Whether you’re publishing your first blog post or optimizing a 5,000-page website, there are SEO tools here to help.

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