You don't need an expensive subscription to do real SEO work. Between Google's own tools and the free tiers of the big platforms, you can research keywords, crawl your site, fix technical errors, track rankings and check backlinks without paying anything.
The catch is that "free" means different things. Some tools are free forever with no limits. Others cap you at 500 crawled URLs, a handful of searches a day, or one verified domain — and a few are really trials designed to sell you the paid product. This guide states the exact limit for each one.
Start with Google Search Console (your own ranking and indexing data), add Google Keyword Planner for keyword volumes, Screaming Frog for technical crawls up to 500 URLs, and PageSpeed Insights for Core Web Vitals. Those four are genuinely free and cover most of what a small site needs. Everything below is ranked by how much real work you can do before hitting a paywall.
How we tested
We used each tool on live sites we operate, and rated it on four things: what you can actually do on the free tier, how quickly it produces something useful, whether the data is first-party or estimated, and how hard the upsell pushes.
A few ground rules for this list:
- No affiliate influence on the ranking. Position here is editorial. Where we link to a paid plan we say so.
- "Free" is stated precisely. If a tool caps crawls, searches or domains, the cap is in the table and in the entry.
- Estimated data is labelled. Keyword volumes from third-party tools are models, not Google's numbers — only Search Console and Keyword Planner give you data from Google itself.
- Reviewed: 1 September 2026 by Rae Mercer, editor at ChooseMyStack.
The best free SEO tools at a glance
| Tool | Best for | What the free tier actually gives you |
|---|---|---|
| Google Search Console | Rankings, indexing & search performance | Unlimited · 16 months of data · site verification required |
| Google Keyword Planner | Keyword research | Unlimited, but needs a Google Ads account; volumes shown as ranges |
| Screaming Frog SEO Spider | Technical SEO audits | 500 URLs per crawl · no JS rendering or scheduling |
| Google PageSpeed Insights | Page speed & Core Web Vitals | Unlimited · no account needed |
| Ahrefs Free | Backlinks & site SEO data | Your own verified domains only · no competitor research |
| Google Trends | Search trends & seasonality | Unlimited · no account needed |
| Bing Webmaster Tools | Bing SEO, audits & backlinks | Unlimited · uncapped backlink data |
| Google Rich Results Test | Structured data testing | Unlimited · any public URL or snippet |
| Ubersuggest | Keyword ideas & SEO research | A few searches per day · estimated data |
| AnswerThePublic | Search questions & content ideas | A few searches per day · no export |
| AlsoAsked | Related questions & topic clusters | Limited searches per month · no export |
| Google Analytics | Organic traffic & conversions | Free (GA4) · limits only at very high volume |
| Semrush Free Tools | Keyword, competitor & site research | ~10 requests/day · 1 project |
| Lighthouse | Technical performance | Unlimited · open source · runs locally |
| Microsoft Clarity | User behaviour & UX insights | Unlimited · no sampling · no paid tier |
1. Google Search Console
Best for: Finding what Google already knows about your website
Free tier: Completely free, no limits. Requires you to verify ownership of the site; shows up to 16 months of performance history.
If you only set up one SEO tool, make it Google Search Console.
Search Console gives you first-party information about how your website performs in Google Search, including impressions, clicks, queries and average position. It also helps you investigate indexing problems and inspect individual URLs. Try Google Search Console →
What you can use it for
- Find keywords your pages already rank for
- See impressions and clicks
- Find pages losing search traffic
- Identify indexing problems
- Submit and monitor XML sitemaps
- Inspect individual URLs
- Monitor Core Web Vitals
- Review structured-data issues
- Find opportunities where pages have lots of impressions but few clicks
The SEO trick most beginners miss
Go to Performance → Search results and look for keywords where your page ranks around positions 8–20. These are often better optimization opportunities than starting from zero.
For example, if a page receives 8,000 impressions, 120 clicks and an average position of 12, you already have evidence that Google considers the page relevant. Instead of creating another article, improve the existing page.
Verdict: Essential.
2. Google Keyword Planner
Best for: Finding keyword ideas and estimating search demand
Free tier: Free, but requires a Google Ads account. Without an active ad campaign, search volumes appear as broad ranges (e.g. 1K–10K) rather than exact numbers.
Google Keyword Planner is one of the most useful free starting points for keyword research. You can enter a topic or website and generate keyword ideas, then investigate search volume, competition and related terms. Open Google Keyword Planner →
It isn't designed specifically for organic SEO, so the data isn't a replacement for a dedicated SEO platform. But it is particularly useful when you're building an initial keyword list.
Use it to find
- Commercial keywords
- Related keyword ideas
- Long-tail variations
- Product/service searches
- Seasonal demand
- Keywords worth investigating further
Best workflow
Don't take every keyword Planner gives you. Instead, chain your tools together — Keyword Planner → Google Search → Search Console → competitor SERPs — to understand both demand and actual search intent.
Verdict: One of the best free keyword research starting points.
3. Screaming Frog SEO Spider
Best for: Technical SEO audits
Free tier: Free version crawls up to 500 URLs per crawl. JavaScript rendering, scheduling, custom extraction and Search Console integration are paid-only.
Screaming Frog is one of the most useful free tools for finding technical SEO problems. The free version can crawl up to 500 URLs per crawl and identify issues involving broken links, redirects, page titles, meta descriptions and other on-site SEO elements. Try Screaming Frog SEO Spider →
Use it to find
- Broken links and 404 pages
- Redirect problems
- Missing or duplicate titles
- Missing meta descriptions
- Duplicate content signals
- Canonical issues
- Indexability problems
- Hreflang problems
- Internal linking issues
For a small business website or blog under 500 URLs, this is an exceptionally useful free audit tool.
Verdict: Essential for technical SEO.
4. Google PageSpeed Insights
Best for: Page speed and Core Web Vitals
Free tier: Completely free and unlimited. No account needed — works on any public URL.
PageSpeed Insights shows how a webpage performs and highlights opportunities to improve its performance. Try PageSpeed Insights → It's particularly useful for checking Largest Contentful Paint, Interaction to Next Paint, Cumulative Layout Shift, mobile and desktop performance, image optimization, JavaScript issues and render-blocking resources.
The important thing is not to obsess over getting a perfect score. Instead, look for problems that have a meaningful impact on real users. Slow scores often trace back to your hosting, too — our best web hosting guide covers faster options.
Verdict: Essential for technical SEO and page experience.
5. Ahrefs Free
Best for: Backlinks and SEO data for your own website
Free tier: Free via Ahrefs Webmaster Tools, but only for domains you verify as your own. You can't research competitors on the free tier.
Ahrefs has expanded its free offering beyond the old Webmaster Tools positioning. Ahrefs Free provides access to selected Ahrefs capabilities, including Site Explorer, Site Audit and Web Analytics, with free access tied to verified websites and usage limits. Try Ahrefs' free tools →
Useful for
- Finding pages receiving organic traffic
- Understanding which keywords your site ranks for
- Reviewing backlinks and referring domains
- Auditing technical SEO
- Monitoring your site's SEO health
The free version isn't intended to replace a full Ahrefs subscription, but it is extremely useful for website owners who don't need large-scale competitor research.
Verdict: Excellent free addition to your SEO stack.
6. Google Trends
Best for: Finding growing topics before they become obvious
Free tier: Completely free and unlimited. No account needed.
Keyword volume doesn't tell the entire story. Google Trends helps you understand whether interest in a topic is growing, declining, seasonal, regional or stable — which makes it particularly useful for content planning. Open Google Trends →
For example, instead of publishing an article simply because a keyword has search volume, compare several related topics and see which one is gaining momentum.
Great for
- Seasonal content
- News-driven topics
- Product categories
- Emerging search behaviour
- Comparing keyword popularity
- Finding geographic interest
Verdict: One of the most underused free SEO research tools.
7. Bing Webmaster Tools
Best for: Bing search performance and technical SEO
Free tier: Completely free, no limits. Requires site verification; you can import your site straight from Search Console.
Google isn't the only search engine worth monitoring. Bing Webmaster Tools provides search performance information, keyword research, backlink insights, SEO reports and Site Scan. Try Bing Webmaster Tools →
The Site Scan feature crawls your site and categorizes discovered issues by severity. You can also see which queries and pages are receiving clicks and impressions from Bing.
Two things make it worth the ten minutes of setup even if Bing traffic looks negligible:
- It gives you backlink data for free. Bing's backlink report has no domain cap and no paywall, which makes it one of the few genuinely free ways to see who links to you.
- Bing powers more than Bing. Its index feeds other surfaces, and it's a second, independent opinion on your technical health — if both Google and Bing flag the same crawl issue, it's real.
You can import your site directly from Google Search Console rather than re-verifying from scratch, which takes the setup down to a couple of clicks.
Verdict: A no-brainer if you're serious about organic search beyond Google — and the free backlink data alone justifies it.
8. Google Rich Results Test
Best for: Testing structured data
Free tier: Completely free and unlimited. Tests any public URL or a pasted code snippet.
If you use structured data on your pages, don't assume it is working correctly. Google's Rich Results Test lets you validate eligible structured-data implementations. Try the Rich Results Test →
Google explains that structured data can help it understand page content and make pages eligible for richer search appearances — but valid structured data doesn't guarantee that a rich result will actually appear.
Use it to check
- Whether Google can read your markup
- Structured-data errors
- Eligibility for supported rich results
- Problems before publishing changes
Verdict: Essential if your site uses structured data.
9. Ubersuggest
Best for: Simple keyword research
Free tier: Free tier allows only a handful of searches per day before prompting an upgrade. The daily cap has tightened over time, so treat it as a sampler.
Ubersuggest remains useful for beginners who want a straightforward keyword research interface. It can help generate keyword ideas and provide SEO metrics without the complexity of a large enterprise SEO platform. Try Ubersuggest →
The downside is the free version is limited, so it's better suited to smaller research tasks than large-scale keyword analysis.
Use it for
- Keyword ideas and related terms
- Question keywords
- Basic SEO difficulty research
- Initial content research
Treat its volume and difficulty figures as estimates from a third-party model, not Google data. They're directionally useful for comparing two keywords against each other, but don't plan around the absolute numbers.
The daily free cap has tightened considerably over the years, so it's best used to answer one specific question rather than to browse.
Verdict: Good beginner option, but don't depend on it as your only keyword source.
10. AnswerThePublic
Best for: Finding questions people search
Free tier: Free tier allows a small number of searches per day, then locks results until the next day. No export on free.
AnswerThePublic is particularly useful at the beginning of content research. Instead of starting with "What article should I write?" you can start with "What questions do people have about this topic?"
That can reveal how questions, why questions, comparison searches, problem-based searches and long-tail queries. Its free access is limited, so it works best as a brainstorming tool rather than a complete keyword database. Try AnswerThePublic →
Because the free tier caps you at a few searches a day, use them deliberately:
- Search the broad topic, not a specific keyword — you want the shape of the whole question space, not one variation.
- Take the question clusters into Search Console or Keyword Planner to check which ones have real demand. AnswerThePublic tells you what people ask; it doesn't tell you how often.
- Use the questions as H2 subheadings in a single comprehensive article rather than writing a thin page per question.
One caveat: the questions are generated from autocomplete data, so they reflect phrasing patterns rather than verified search volume. Never build a content plan on this tool alone.
Verdict: Great for content ideation — pair it with a volume source before committing.
11. AlsoAsked
Best for: Building question-based topic clusters
Free tier: Free tier gives a limited number of searches per month, with no CSV export or saved history.
AlsoAsked takes a seed query and helps map related questions around it, which is particularly useful when you're planning a comprehensive article. Starting from a seed like "SEO tools," it branches into questions such as "What are the best free SEO tools?", "What is the best free keyword research tool?" and "How do I check my Google rankings?"
That structure can help you understand the questions surrounding a topic before creating your content. Try AlsoAsked →
Where AnswerThePublic gives you a flat list, AlsoAsked shows the hierarchy — which questions branch off which. That branching is effectively a content brief: the parent question becomes the page, the child questions become the sections.
With only a few free searches a month, run it on your single most important topic and screenshot the tree rather than burning searches on variations.
Verdict: Excellent for content structure and topical research — the branching view is what sets it apart.
12. Google Analytics
Best for: Understanding what happens after organic visitors arrive
Free tier: GA4 is free for the vast majority of sites. Very high-traffic properties can hit data-collection and reporting limits that push them toward the paid 360 tier.
Search Console tells you what happens in Google Search. Google Analytics helps you understand what happens after someone reaches your website.
Google itself recommends using Search Console and Analytics together because they answer different questions: Search Console focuses on search performance, while Analytics provides information about visitor behaviour and interactions. If you'd rather not route visitor data through Google, privacy-friendly open-source options like Plausible and Umami cover the essentials.
Ranking higher is useful, but ultimately you want visitors to subscribe, buy, request a demo, contact you, sign up or read another page. Open Google Analytics →
Verdict: Essential for measuring SEO business value.
13. Semrush Free Tools
Best for: Getting a taste of advanced SEO research
Free tier: Free account gives roughly 10 requests per day across reports and one project. Enough to spot-check, not to run ongoing research.
Semrush offers a large collection of free tools covering keyword research, site auditing, rankings, backlinks and other SEO tasks. Its current free offering is particularly useful when you need more competitive research than Google's tools provide. Try Semrush's free tools →
The important distinction is that many capabilities have usage limits or belong to paid plans. That makes Semrush useful as part of a free stack rather than something you should treat as your only free SEO platform.
At roughly 10 requests a day, the free account isn't a research platform — it's a way to sanity-check one thing. Spend those requests on a competitor's top pages or a single domain overview rather than exploratory browsing.
If you're hitting the cap regularly, that's the signal you've outgrown free tools. Our best SEO tools guide compares the paid platforms on what you actually get for the money.
Verdict: Excellent supplementary tool — for spot checks, not ongoing research.
14. Lighthouse
Best for: Technical performance diagnostics
Free tier: Completely free and open source, with no usage limits — it runs locally in your browser rather than on a vendor's servers.
Lighthouse is an open-source auditing tool that can analyze webpages for performance, accessibility, SEO and other technical considerations. It's particularly useful when you're already working inside Chrome DevTools and want a technical diagnostic rather than a keyword research platform. Learn about Lighthouse →
Use it alongside PageSpeed Insights rather than instead of it. The difference matters:
- PageSpeed Insights shows field data — real Core Web Vitals from actual Chrome users over the past 28 days. That's what Google uses for the page-experience signal.
- Lighthouse runs a lab test on your machine, right now. The score moves with your hardware and connection, so don't chase the number — use it to find what to fix.
Its practical advantage is speed of iteration: you can change something, re-run in seconds, and see whether it helped, without waiting 28 days for field data to update. The SEO audit category also catches basics like missing meta descriptions, non-descriptive link text and invalid `hreflang`.
Verdict: Excellent technical companion — treat it as a debugger, and PageSpeed Insights as the scoreboard.
15. Microsoft Clarity
Best for: Understanding why visitors aren't converting
Free tier: Completely free with no traffic limits, no sampling and no paid tier. Unusual for this category.
Clarity isn't a traditional SEO tool — and that's exactly why it's useful. SEO shouldn't stop when somebody clicks your Google result. If organic visitors arrive and immediately struggle to navigate your page, your SEO traffic isn't doing much for the business. Try Microsoft Clarity →
Behaviour analytics can help you identify confusing sections, poor navigation, dead clicks, excessive scrolling, pages where users abandon and mobile UX problems. Use this information to improve the pages receiving organic traffic.
Clarity earns its place on an SEO list because rankings only get you halfway — session recordings and heatmaps show you why a page that ranks well still doesn't convert. Rage clicks and dead clicks in particular tend to expose broken expectations no crawler will ever flag.
It's genuinely unlimited: no traffic ceiling, no sampling, and no paid tier waiting to charge you once you grow.
Verdict: Not a ranking tool, but extremely useful for turning SEO traffic into results.
The best free SEO stack for beginners
You don't need all 15 tools. In fact, using too many tools can make SEO unnecessarily complicated. If you're starting from scratch, this is the stack to use:
- Google Search Console — find out what Google already knows about your website.
- Google Keyword Planner — build your initial keyword list.
- Google Trends — check whether your topics have growing or declining interest.
- Screaming Frog — find technical problems.
- PageSpeed Insights — check performance and Core Web Vitals.
- Ahrefs Free — understand backlinks and your site's organic visibility.
- Google Analytics — measure what visitors do after they arrive.
That's enough to run a surprisingly capable SEO operation without buying an expensive SEO subscription.
Which free SEO tool should you use?
| Your goal | Start with | Official site |
|---|---|---|
| Check Google rankings | Google Search Console | search.google.com ↗ |
| Find keyword ideas | Google Keyword Planner | ads.google.com ↗ |
| Find long-tail questions | AnswerThePublic | answerthepublic.com ↗ |
| Build topic clusters | AlsoAsked | alsoasked.com ↗ |
| Find technical errors | Screaming Frog | screamingfrog.co.uk ↗ |
| Check page speed | PageSpeed Insights | pagespeed.web.dev ↗ |
| Check backlinks | Ahrefs Free | ahrefs.com ↗ |
| Find trending topics | Google Trends | trends.google.com ↗ |
| Monitor Bing | Bing Webmaster Tools | bing.com/webmasters ↗ |
| Test structured data | Rich Results Test | search.google.com ↗ |
| Measure conversions | Google Analytics | marketingplatform.google.com ↗ |
| Understand user behaviour | Microsoft Clarity | clarity.microsoft.com ↗ |
| Research competitors | Semrush / Ahrefs | semrush.com ↗ |
| Audit a small site | Screaming Frog | screamingfrog.co.uk ↗ |
| Improve existing content | Search Console | search.google.com ↗ |
How to use free SEO tools to actually increase traffic
The tools themselves won't increase your rankings — what you do with the information will. Here's a simple monthly workflow.
Week 1: Find opportunities
Open Search Console and export your top queries. Look for positions 8–20, high impressions, low CTR, and pages ranking for multiple related keywords. These pages already have search visibility, so they can often be more valuable to improve than creating another page from scratch.
Week 2: Fix technical problems
Run your website through Screaming Frog, PageSpeed Insights, Search Console and Bing Webmaster Tools. Prioritize problems that affect crawling, indexing, important pages, internal links and page experience. Don't spend hours fixing low-impact warnings while important pages have fundamental problems.
Week 3: Improve content
Use Google Keyword Planner, Google Trends, AnswerThePublic, AlsoAsked and Search Console, then improve existing pages. Add information that genuinely satisfies the search intent — don't simply repeat the keyword 20 times.
Week 4: Measure
Return to Search Console and Analytics. Check clicks, impressions, CTR, rankings, organic sessions, conversions and the pages generating organic traffic. Then decide what to improve next. SEO works better as a continuous process than as a one-time optimization project.
Are free SEO tools enough?
For many websites, yes — at least in the beginning. A small business, blogger, startup or new website can cover a large portion of its SEO workflow with free tools.
You don't necessarily need a $100+ monthly SEO platform to find keywords, monitor rankings, diagnose indexing issues, crawl a small website, check page speed, analyze backlinks, find content ideas or monitor organic traffic.
Paid tools become more valuable when you need scale — for example, large keyword databases, extensive competitor research, historical data, large crawls, automated reporting or agency workflows.
The goal isn't to own the most SEO software. It's to identify the right problem and use the simplest tool that can solve it.
Free vs freemium SEO tools
One thing to watch out for when comparing SEO tools is the definition of free.
Truly free — Google Search Console, Google Trends, PageSpeed Insights and Rich Results Test.
Free with limits — Screaming Frog, Ahrefs Free, Ubersuggest, Semrush's free tools, AnswerThePublic and AlsoAsked.
The important question isn't "Is this tool free?" It's "Can I accomplish what I need without paying?" That's the comparison that actually matters.
Final verdict
If you're building an SEO workflow from zero, don't start by subscribing to five different platforms. Start with Google Search Console + Google Keyword Planner + Screaming Frog + PageSpeed Insights + Google Trends + Ahrefs Free.
Add AnswerThePublic or AlsoAsked when you need content ideas, and bring in a larger platform such as Semrush or Ahrefs when your research needs become more advanced — our best SEO tools guide compares the paid platforms head-to-head.
The best free SEO tool isn't necessarily the one with the biggest keyword database. It's the one that helps you find a problem, understand why it exists, and decide what to do next.
Related reading
- Best SEO tools — the paid platforms compared (Semrush, Ahrefs and more)
- Best email marketing software
- Best web hosting
- Best free website builders
