SEO can feel overwhelming when you’re first getting started, especially when many of the industry’s best-known platforms come with significant monthly subscription costs.
The good news is that you don’t need an expensive software stack to improve your website’s visibility. There are plenty of free SEO tools available that can help you monitor rankings, identify technical issues, analyse search performance and uncover optimisation opportunities. Some products are fully free; others provide limited free plans alongside paid subscriptions. Check the limits against the task you need to complete.
Whether you’re running your own website, managing SEO for clients or simply looking to understand how your site performs in search results, the tools below provide an excellent starting point.
What Are the Best Free SEO Tools?
1. Google Search Console
Google Search Console remains one of the most valuable free SEO tools available. It provides first-party data directly from Google, allowing you to monitor search performance, indexing issues, Core Web Vitals and keyword visibility.
2. Google Trends
Google Trends is an excellent tool for understanding how search behaviour changes over time.
You can compare search terms, identify seasonal trends and discover emerging topics before they become highly competitive. This makes it particularly useful for content planning and identifying opportunities to create content around growing areas of interest.
For businesses creating blog content or planning marketing campaigns, Google Trends can provide valuable insight into what audiences are searching for right now.
3. AnswerThePublic
AnswerThePublic is a popular content research tool that helps uncover the questions people are asking around a specific topic.
Rather than simply showing keywords, it visualises the questions, comparisons and phrases users search for, helping marketers understand search intent and create more useful content.
It’s particularly helpful when building blog content, FAQs, buying guides and topical authority clusters, making it a valuable addition to any content marketer’s toolkit.
4. Screaming Frog SEO Spider
Screaming Frog is one of the most widely used technical SEO tools among agencies, in-house teams and freelance consultants. The software crawls your website in much the same way as a search engine, helping you uncover issues that could be affecting your site’s performance in search results.
The free version allows users to crawl up to 500 URLs and identify problems such as broken links, redirect errors, duplicate content, missing title tags, missing meta descriptions and crawlability issues. It’s particularly useful when carrying out technical SEO audits, reviewing website migrations or identifying quick-win optimisation opportunities.
For many SEO professionals, Screaming Frog remains one of the first tools they turn to when diagnosing technical issues or assessing the overall health of a website.
5. Mosfy Bulk Redirect Checker
Redirects play an important role in maintaining SEO performance, particularly when pages are removed, URLs change or websites undergo redesigns and migrations. However, identifying redirect issues across hundreds or thousands of URLs can be time-consuming without the right tools.
The Mosfy Bulk Redirect Checker allows users to analyse up to 1,000 URLs in a single scan, providing a way to review redirects at scale. The tool helps uncover redirect chains, identify broken redirects, detect incorrect HTTP status codes and reveal the final destination URL for every page checked.
Whether you’re auditing an existing website, validating a migration, reviewing internal links or troubleshooting technical SEO issues, Mosfy provides a simple way to spot problems before they impact users or search engine crawlers. Its browser-based approach also means there’s no software to install, allowing teams to run large-scale redirect audits quickly and efficiently.
Which free SEO tool should you use first?
- Understand Google visibility: use Search Console to see queries, pages, clicks and indexing information for a property you can access.
- Check changing interest: use Google Trends to compare relative interest by time and location. Its indexed scores are not absolute search volumes.
- Find customer questions: use AnswerThePublic to explore potential topics, then check that they match your customers and your offer. Its free plan has a daily search allowance.
- Audit a small website: use Screaming Frog to inspect titles, links and response codes. Its free crawl is limited to 500 URLs; advanced features require a licence.
- Check a migration: use Mosfy to review old URLs and final destinations, then update internal links to point directly to the destination.
A practical workflow for a small business
Start with a 28-day Search Console baseline and note the pages receiving impressions but few clicks. Read those pages against the searches they appear for. Does the content actually answer the question, and does the title describe it accurately? Our guide to SEO copywriting explains how to improve the answer without stuffing in keywords.
Next, crawl the site and prioritise broken links to important pages, accidental indexing blocks and unnecessary redirect chains. Fix the highest-impact issues before trying to perfect every warning.
Keep a dated change log, then compare performance over a suitable period after Google has had time to recrawl. Separate clicks and impressions from enquiries: those answer different questions. The pillars of SEO provide a wider framework for deciding what to tackle next.
Free does not mean unlimited. Check Screaming Frog’s free and paid feature comparison and AnswerThePublic’s current free-plan limits before building a process around them.
Build a Strong SEO Foundation Without Expensive Software
Many businesses assume effective SEO requires costly enterprise tools, but the reality is that a carefully chosen set of free tools can cover most day-to-day SEO tasks. Combining Google Search Console, Google Trends, Screaming Frog and specialist tools such as Mosfy’s Redirect Checker can provide a solid foundation for improving search visibility and website performance.
Need Help Improving Your SEO?
While free tools provide valuable insights, knowing what to do with that data is often the biggest challenge. At The Codex Collective, we help businesses turn SEO insights into measurable growth through technical SEO, content strategy, on-page optimisation and digital PR.
Explore our SEO services to learn how we can help your website generate more organic traffic, leads and revenue.
