How to Perform a Complete SEO Audit for Free
A proper SEO audit doesn't require a $200/month crawler subscription. Here's the exact free workflow I use.
The first time I ran a "proper" SEO audit, I paid for a crawler subscription I barely used again. Turns out most of what a small-to-mid site actually needs to check doesn't require crawling a million URLs — it requires checking the right things, in the right order, on the pages that matter.
This is the free audit workflow I now run on every new client site before we touch a single word of content. Grab your homepage, your top three landing pages, and let's go.
Step 1: Can bots even reach your site?
Before anything else, confirm you haven't accidentally blocked Google. Paste your robots.txt into the Robots.txt Tester and check specific paths against specific user-agents. I've seen agencies disallow /blog/ for months without anyone noticing — an easy, catastrophic mistake.
Step 2: Validate your sitemap
Your XML sitemap should contain only canonical, indexable, 200-status URLs. Run it through the XML Sitemap Validator to catch malformed entries, oversized files, or stray redirect and 404 URLs sneaking in.
Step 3: Indexability, page by page
For your top pages, run the Indexability Audit tool. It flags the classic conflicting-signals problem: a page that's indexed in Search Console but carries a noindex tag, or a canonical pointing somewhere else entirely. These conflicts quietly waste crawl budget.
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Start your free auditStep 4: Redirect and link hygiene
Chase down redirect chains with the Redirect Chain Checker — anything over two hops is worth fixing. Then run the Internal Link Analyzer to spot orphan pages with zero internal links pointing to them. An orphan page is basically invisible to Google, no matter how good the content is.
Step 5: Core Web Vitals and mobile
Work through the Core Web Vitals Checklist for LCP, INP and CLS, then confirm your mobile rendering isn't hiding content with the Mobile-Friendly Analyzer. Remember, Google indexes the mobile version of your page — if content only shows on desktop, it may as well not exist.
Step 6: SSL, HTML tags and schema
Quick final pass: confirm your certificate is valid and not expiring soon with the SSL Certificate Checker, paste your page source into the HTML Tag Analyzer to check title/H1/meta counts, and validate your structured data with the FAQ Schema Generator or Article Schema Generator if you haven't added schema yet.
Frequently Asked Questions
How long does a full audit take?
For a 20–30 page small business site, budget about two hours the first time. Repeat audits on the same site take 20–30 minutes once you know where the recurring issues live.
Do I need a paid crawler for sites under 500 pages?
Generally no. The free tools on Quick Free SEO plus Google Search Console cover nearly everything a site that size needs.
How often should I re-audit?
Quarterly for a stable small site, monthly if you're publishing weekly, and immediately after any site migration or CMS change.
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Start your free auditRelated articles
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- How to Create a Perfect robots.txt FileOne misplaced slash in robots.txt can hide your entire site from Google. Here's how to get it right.
- Mobile SEO Checklist for Higher RankingsGoogle indexes your mobile site, not your desktop one. Here's the checklist that actually matches how it evaluates you.