What are the best free SEO tools in 2025? This is among the top questions by beginners in search engine optimization. In this quick yet comprehensive write-up, we have covered the top SEO optimization tools for competitor research, website analysis, keyword research, and other search engine optimization tasks.
We know the significance of using the right search engine optimization tools to make your efforts count and improve the ranking of a website. While there are numerous free and premium tools available, choosing the right ones is crucial.
Premium tools are great when you want higher limits for all tasks, advanced features and functionalities, and quick support. But for the majority of your tasks, some free SEO tools online will do the trick for you.
Having said that, let’s move to the list of top SEO tools in 2025 that you can use at no cost. Used by a vast community of digital marketers and SEOs, these tools will provide you with actionable data, backlinks, keywords, spam scores, website analysis, and much more.
Suggested Reading: Conclusive Guide to Google AMP (Accelerated Mobile Pages)
Free SEO Tools for Competitor Research
1. SpyFu
This tool helps you to spy on your competitors, providing you insights about the keywords of your top competitors, find the websites bidding on your PPC keywords, analyze the ranking of competitors for specific keywords, and check their backlinks.
You can download the report of your competitor’s SEO profile and use it offline for further analysis. It is also handy for keyword research and other SEO tasks.
2. SEMrush
SEMrush is one of the best SEO tools for competitor research and website analysis. You can view the performance of specific websites with the ranking of their pages. It also shows the visibility of a website on Google over time and for what keywords.
You can see the comparison of your page rankings against the competitors, do backlink analysis, find suitable keywords for SEO and PPC, and explore more tool features.
3. Ahrefs
Ahrefs is another great tool for competitor research, website analysis, and keyword research. It has almost everything you will need for SEO auditing. It has a number of different in-built online tools, like Site Explorer, Site Audit, Keyword Explorer, Rank Tracker, and Content Explorer.
4. Moz
Moz is a leading tool in SEO and digital marketing. It is an all-rounder for doing competitor research, SEO auditing, tracking the performance of top keywords for multiple search engines, spying on competitors’ backlinks with anchor text and DA, and performing keyword research.
It can be used for free for most of the tasks. For advanced and in-depth data, it asks for a subscription.
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Free SEO Tools for Website Analysis
5. SEOptimer
SEOptimer helps you audit your website for SEO. It checks several factors that matter in search engine optimization, and shows the problems that hold your website from improved rankings on Google. Along with showing the core issues, SEOptimer also reveals the actionable suggestions to follow to get rid of those issues and make your site SEO-friendly.
Moreover, you can monitor the ranking of your site for specific keywords over time, improvements and decline in ranking, etc.
6. Google Search Console
When it comes to analyzing your site for SEO, you must start with Google Search Console. Once integrated, it will show you the organic performance of your site, coverage errors and concerns that hamper the rankings, sitemap, check specific URLs for indexing, etc.
Furthermore, Google Search Console also shows the number of clicks, impressions, CTR, keywords that bring traffic, submitting new sitemaps and URLs for indexing, and more.
7. Google PageSpeed Insights
The loading speed of your website is important not only because it is a top-ranking factor, but also because it matters for user experience. Slow-loading web pages can bring down your organic rankings and reduce conversions. That’s where the role of Google PageSpeed Insights comes into play.
It shows you the score of your website in terms of its loading speed, for both mobile and desktop devices. In addition, PageSpeed Insights tells you about the potential issues impacting the site speed, such as server issues, image sizes and format, and what you should do to fix these.
Related Reading: Ultimate Mobile SEO Guide: Importance, Audit, Strategy, Best Practices
Free SEO Tools for Keyword Research
8. Google Keyword Planner
When finding the right keywords for your content, Google Keyword Planner should be a top choice. It comes in-built with Google Ads, but you can use it for free.
You can enter multiple key phrases in one go and see several keyword variations for your topic, with monthly volume range and SEO difficulty. It also categorizes branded keywords and allows filtering for finding the keywords you will need.
9. Ubersuggest
Ubersuggest is developed by Neil Patel and is one of the best free SEO tools for keyword research and content analysis. Type in your topic or keyphrase, select country, and it will show you the top keywords with their volume and difficulty score.
You can also see related keywords, questions, content ranking for those keywords, and social shares.
10. Answer The Public
This is an underrated free tool for keyword research, but if used properly, it can help you find long-tail keywords and questions asked by your audience. When you enter your topic, it shows numerous ideas that are searched by users. The best thing about it is that you get all the questions people search on Google and other search engines.
It doesn’t show the monthly volume, but a green dot with different shades. Darker the color means more volume, while lighter means low volume.
Bonus:
There are a few more top free SEO tools that you can use for keyword research, website analysis, and competitor research.
- Screaming Frog
- Keyword Hero
- SEOlyzer
- Mobile-Friendly Test
- SEO Minion
- SEO Quake
- Small SEO Tools
Wrapping Up:
So, these are some of the best free SEO tools in 2025 that will make your SEO efforts all the more effective. From researching the right keywords to auditing your website to performing competitor research, these tools cover everything for you. If you want advanced and premium features, it makes sense to go for a paid plan for these tools.
Which of these are you already using and find the perfect for SEO?
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