Free SEO tools
Start with the search engines' own tools, then add free plans from the paid suites as you need them.
Completely free
Ahrefs Webmaster Tools
SEO audit tools
Free site audit and backlink data from Ahrefs for sites you own.
Bing Webmaster Tools
SEO audit tools
Microsoft's free search console, with a site scan and keyword tool.
Google Keyword Planner
Keyword research tools
Google's own keyword ideas and search volume ranges.
Google Search Console
SEO audit tools
Google's own data on how your site performs in search.
Google Trends
Keyword research tools
See how interest in a search topic changes over time.
Lighthouse
Page speed & Core Web Vitals
Open-source audit for performance, accessibility and SEO basics.
PageSpeed Insights
Page speed & Core Web Vitals
Google's free test for Core Web Vitals and page speed.
Free plans and free versions
All in One SEO
WordPress SEO plugins
Popular WordPress SEO plugin with a guided setup and on-page analysis.
AnswerThePublic
Keyword research tools
Find the questions people ask around any keyword.
GTmetrix
Page speed & Core Web Vitals
Detailed page speed reports with waterfalls and monitoring.
Rank Math
WordPress SEO plugins
Feature-rich WordPress SEO plugin with a generous free version.
Screaming Frog SEO Spider
Technical SEO crawlers
The industry-standard desktop crawler for technical SEO audits.
Semrush
All-in-one SEO suites
The broadest SEO and marketing suite, from keywords to PPC and social.
Seobility
SEO audit tools
Easy online site audit with a useful free plan.
SEOPress
WordPress SEO plugins
Lightweight WordPress SEO plugin without ads in the dashboard.
SEOptimer
SEO audit tools
Instant one-page SEO audit with white-label reports.
Siteliner
SEO audit tools
Find duplicate content and broken links across your site.
SpyFu
Keyword research tools
Competitor research tool for organic and paid keywords.
The SEO Framework
WordPress SEO plugins
Fast, minimalist WordPress SEO plugin that works with sensible automatic defaults.
Ubersuggest
Keyword research tools
Beginner keyword and audit tool from Neil Patel.
Yoast SEO
WordPress SEO plugins
The most widely installed WordPress SEO plugin.