Google's own data on how your site performs in search.
Best for: Every website owner. Start here.
- Search performance report
- Page indexing report
- URL inspection
- Core Web Vitals
Best SEO audit tools in 2026
An SEO audit tool scans your website the way a search engine would and gives you a list of problems to fix: broken links, missing titles, duplicate content, slow pages, redirect chains and crawl errors. Some are free one-page checkers, others crawl millions of URLs and track issues over time.
17 tools compared. Top picks first, then alphabetical. No paid placements.
All-in-one SEO suite best known for its huge backlink index.
Best for: Link building, competitor research and agencies that need reliable backlink data.
- Site Explorer (backlinks & organic traffic)
- Keywords Explorer
- Site Audit
- Rank Tracker
The industry-standard desktop crawler for technical SEO audits.
Best for: Technical SEOs who want maximum control over audits.
- Full site crawl
- JavaScript rendering
- Custom extraction
- Crawl comparison
Affordable all-in-one suite with accurate rank tracking.
Best for: Freelancers and agencies who need solid features at a lower price.
- Rank Tracker
- Website Audit
- Keyword Research
- Backlink Checker
The broadest SEO and marketing suite, from keywords to PPC and social.
Best for: Teams that want SEO, PPC and content research under one login.
- Keyword Magic Tool
- Site Audit
- Position Tracking
- Backlink Analytics
Free site audit and backlink data from Ahrefs for sites you own.
Best for: Site owners who want a professional audit for free.
- Site Audit
- Backlink report
- Organic keywords
- Site Explorer for owned sites
Microsoft's free search console, with a site scan and keyword tool.
Best for: Getting extra free audit and link data, and visibility in Bing.
- Search performance
- Site scan
- Keyword research
- Backlinks
Seobility
FreemiumEasy online site audit with a useful free plan.
Best for: Small websites that need a regular, simple audit.
- Website audit
- On-page checks
- Rank tracking
- Backlink overview
SEOptimer
FreemiumInstant one-page SEO audit with white-label reports.
Best for: Agencies that want audit reports for lead generation.
- Instant SEO audit
- White-label PDF reports
- Embeddable audit tool
- Site crawler
Siteliner
FreemiumFind duplicate content and broken links across your site.
Best for: Spotting duplicate and thin content quickly.
- Duplicate content check
- Broken link finder
- Page power
- Skipped pages report
JetOctopus
Free trialFast cloud crawler with log file analysis.
Best for: Large websites and e-commerce stores.
- Cloud crawling
- Log file analyzer
- GSC integration
- JavaScript rendering
Lighthouse
FreeOpen-source audit for performance, accessibility and SEO basics.
Best for: Developers who want audits in their own workflow.
- Performance audit
- Accessibility audit
- SEO checks
- CLI & CI usage
Lumar
PaidEnterprise website intelligence platform (formerly Deepcrawl).
Best for: Enterprise sites and in-house SEO teams.
- Enterprise crawling
- Pre-release testing
- Monitoring & alerts
- Accessibility checks
Moz Pro
Free trialLong-standing SEO suite and the home of Domain Authority.
Best for: Beginners and small teams who value clear explanations and simple reports.
- Keyword Explorer
- Link Explorer
- Site Crawl
- Rank tracking
Serpstat
Free trialBudget-friendly SEO platform with keywords, audits and tracking.
Best for: Budget-conscious teams that want a full feature set.
- Keyword research
- Competitor analysis
- Site audit
- Rank tracker
Sitebulb
Free trialCrawler that turns technical data into prioritised, explained hints.
Best for: Consultants and agencies who present audits to clients.
- Prioritised audit hints
- Visual crawl maps
- JavaScript rendering
- Accessibility checks
Ubersuggest
FreemiumBeginner keyword and audit tool from Neil Patel.
Best for: Beginners and small business owners getting started with SEO.
- Keyword ideas
- Content ideas
- Site audit
- Rank tracking