After years of working on Google SEO, I have found that many people do not struggle because they lack optimisation skills. They struggle because they use the wrong tools and spend too much time on low-value work.
I have collected 33 useful websites covering keyword research, competitor analysis, technical SEO, link building, performance and local search.
The list includes free resources and professional paid products, covering the core needs of everyday SEO work. Save it for reference.
1. Official Google SEO tools
1. Google Search Console — search.google.com/search-console — Monitor indexing, search impressions, clicks, positions and indexing issues.
2. PageSpeed Insights — pagespeed.web.dev — Test loading performance and Core Web Vitals.
3. Rich Results Test — search.google.com/test/rich-results — Check whether structured data meets the requirements for supported Google rich results.
4. Google Search Central — developers.google.com/search — Official documentation on search guidelines, algorithms and recommended practices.
2. Technical SEO and site audits
5. Screaming Frog — screamingfrog.co.uk — Crawl websites to investigate broken links, redirects, duplicate titles and indexing issues.
6. Sitebulb — sitebulb.com — Visual technical SEO audits for analysing complex website structures.
7. Ahrefs — ahrefs.com — Backlink analysis, keyword research, competitor traffic estimates and content-gap analysis.
8. Semrush — semrush.com — A toolkit for SEO, Google Ads research and competitive analysis.
9. Moz Link Explorer — moz.com/link-explorer — Analyse backlinks, referring sources and domain-authority metrics.
3. Keywords and search demand
10. Google Keyword Planner — ads.google.com/home/tools/keyword-planner — Discover keywords, search-volume ranges and advertising competition.
11. Google Trends — trends.google.com — Explore search trends, seasonality and regional interest.
12. AlsoAsked — alsoasked.com — Discover related People Also Ask questions to support topic clusters.
13. Keywords Everywhere — keywordseverywhere.com — A browser extension providing keyword-volume, CPC and related-term information.
14. Keyword Surfer — surferseo.com/keyword-surfer — A browser keyword-research extension for exploring related demand.
4. Structured data and website performance
15. Schema.org — schema.org — Look up structured-data types and properties.
16. Schema Markup Validator — validator.schema.org — Validate structured-data syntax and markup structure.
17. WebPageTest — webpagetest.org — Investigate loading performance, request waterfalls and resources.
18. GTmetrix — gtmetrix.com — Diagnose loading speed, resource delivery and performance bottlenecks.
19. Chrome UX Report — cruxvis.withgoogle.com — Explore real Chrome user-experience data.
5. Competitor research and troubleshooting
20. Wayback Machine — archive.org/web — Review historical website versions and changes to pages and content.
21. BuiltWith — builtwith.com — Identify technology stacks, CMS platforms, analytics and marketing technology.
22. Similarweb — similarweb.com — Estimate competitor visits, channels and audience sources.
23. Detailed SEO Extension — detailed.com/extension — Inspect titles, metadata, headings, canonicals and other on-page elements.
24. Redirect Checker — redirect-checker.org — Check 301 and 302 redirects and redirect chains.
25. httpstatus — httpstatus.io — Check HTTP status codes, redirects and headers in batches.
26. Security Headers — securityheaders.com — Review HTTP security response headers to support configuration checks.
6. Local SEO and Google Maps
27. Local Falcon — localfalcon.com — Track Maps visibility through geographic grids.
28. BrightLocal — brightlocal.com — Local ranking monitoring, listing management and reporting.
29. GMB Everywhere — gmbeverywhere.com — Analyse Google Business Profile categories and local competitors.
30. PlePer — pleper.com — Research GBP categories and local-business information.
31. Local Viking — localviking.com — Google Business Profile management and local ranking tracking.
32. Moz Local — moz.com/local — Manage business listings and check information consistency across directories.
7. Content ideas and user questions
33. AnswerThePublic — answerthepublic.com — Explore questions, long-tail queries and content ideas around a core keyword.
If you choose only five, start here
If you are new to Google SEO, you do not need to learn all 33 at once.
Learn these five first:
- Google Search Console: understand actual search performance.
- Google Trends: explore demand and trends.
- Screaming Frog: investigate technical problems.
- Ahrefs: research keywords, competitors and links.
- PageSpeed Insights: improve website performance.
Add paid products according to your business needs once the fundamentals are in place.
The biggest mistake is not having too few tools. It is having many tools without knowing which problem you are trying to solve.
Tools help identify issues. Rankings still depend on technical foundations, search-intent fit, content value and overall site quality.
Note: Some products offer free versions, trials or limited free functionality. They are not all permanently free. Check each official website for current features and prices.
Frequently asked questions
Do beginners need to buy all 33 tools?
No. Identify whether the problem concerns indexing, queries, performance or local visibility, then choose a minimal set. Start with first-party data and official diagnostics before evaluating paid plans. The list is not a purchase requirement or ranking guarantee.
What if Search Console and third-party data disagree?
Compare scope first. Search Console reports a verified site’s Google performance, while third-party keyword, traffic and link metrics use their own indexes and estimates. Align country, device, period, surface and canonical scope. Do not treat competitor estimates as measured visits or add unlike datasets together.
Does Keyword Planner competition measure organic SEO difficulty?
No. It describes advertiser competition for the selected location and network, not organic ranking difficulty. Interpret volume with its location, period, close variants and intent. Relative interest in Google Trends is not an absolute search count.
How do Rich Results Test and Schema Markup Validator differ?
The former checks markup for supported Google rich-result features; the latter provides general Schema.org validation. Passing either does not guarantee rankings or display. Markup must match visible content and current feature-specific requirements.
Does a high PageSpeed score prove good real-user experience?
Not directly. Lab tests help diagnose issues, while CrUX field data represents a different sample and collection window. Separate devices, page-level and origin-level data, and missing data. A lack of field data does not establish good or bad experience.
Are DA and DR official Google ranking scores?
No. These are vendor-defined measures, not official Google scores. They can inform comparison but do not replace relevance, real readership, editorial quality and context. Do not buy manipulative links to raise a score or dismiss every low-scoring source.
Which businesses need local SEO tools?
They are most relevant to businesses with genuine local demand and eligibility for Google Business Profile. Maps results vary with query, location and time; a grid is not a universal ranking. Online-only businesses should not invent addresses or ineligible listings.
Can a security-header score replace a security audit?
No. It covers part of HTTP configuration, not access controls, business logic, dependency vulnerabilities, databases, backups or penetration testing. Scan only owned or authorised systems, and do not submit URLs containing tokens, customer data or authenticated sessions.
Can these tools prove GEO results or AI recommendations?
Not as a blanket conclusion. Technical checks assess access and content conditions, but crawling, indexing, impressions, AI citations and qualified leads are separate stages. Sample fixed questions with platform, mode and date, record citations and brand descriptions, and compare with first-party visits and enquiries. Recheck official access points and plan limits before use.
Source：Google: Structured data testing tools
Source：Google: Structured data policies
Source：Google: About PageSpeed Insights