You know your website needs work, but you're not ready to spend $130/month on SEMrush or hire a $2,000/month SEO agency. Good news: there are genuinely useful free tools that can identify your biggest issues and tell you what to fix first.
We tested the most popular free website audit tools and compared them across the factors that matter most to small business owners: ease of use, depth of analysis, actionability of recommendations, and what you actually get for free.
What to Look for in a Free Audit Tool
Not all audit tools are created equal. Before diving into the comparison, here's what matters:
- Actionability: Does it tell you what to fix, or just list problems? A wall of technical jargon isn't helpful if you don't know what to do about it.
- Coverage: Does it check only technical SEO, or does it also look at content, conversion, and user experience?
- Ease of use: Can a non-technical business owner understand the results?
- True free tier: Some tools show a teaser report and paywall the details. Look for tools that give you real, complete results for free.
The Top Free Website Audit Tools
1. ScoreCraft.ai
Best for: Business owners who want prioritized action steps, not raw data.
ScoreCraft analyzes 90+ signals across 13 categories — including SEO, technical health, security, AI visibility, content quality, accessibility, social media, and conversion optimization. You get a 0-100 Growth Score plus a ranked action plan showing the highest-leverage changes to make this week.
- Free tier: 1 full audit with complete results
- Strengths: Prioritized recommendations, plain-language explanations, covers conversion and monetization (not just SEO), AI visibility checks
- Limitations: 1 audit on free plan, no historical tracking on free tier
2. Google Lighthouse
Best for: Developers who need page speed and accessibility metrics.
Built into Chrome DevTools, Lighthouse measures Performance, Accessibility, Best Practices, and a basic SEO checklist. It's free, unlimited, and runs directly in your browser.
- Strengths: Free and unlimited, comes from Google itself, great for Core Web Vitals
- Limitations: Only checks one page at a time, no content analysis, no conversion metrics, results are highly technical
3. SEMrush Site Audit (Free)
Best for: SEO professionals who need deep technical crawling.
SEMrush offers a limited free audit that crawls up to 100 pages. The results cover technical issues like crawlability, HTTPS, internal linking, and site speed.
- Strengths: Deep technical crawling, comprehensive error categorization, industry-standard tool
- Limitations: Free tier is very limited (100 pages, 1 project), steep learning curve, doesn't cover conversion or content quality
4. Ahrefs Webmaster Tools (Free)
Best for: Site owners who want ongoing technical monitoring.
Ahrefs offers free webmaster tools that include a site audit with up to 5,000 pages crawled. You get backlink data and organic keyword tracking as well.
- Strengths: Generous free crawl limit, backlink insights, ongoing monitoring
- Limitations: Must verify site ownership, focused on technical SEO only, requires expertise to interpret
5. Google Search Console
Best for: Everyone. This should be your first stop, period.
GSC is Google's own tool for monitoring your site's presence in search results. It shows you which pages are indexed, which queries drive traffic, and which technical issues Google has found.
- Strengths: Direct data from Google, shows actual search performance, identifies indexing issues, completely free
- Limitations: Not really an "audit" tool — more of a monitoring dashboard. Doesn't give recommendations or prioritization.
Which Tool Should You Use?
The short answer: use more than one. Each tool has different strengths:
- Start with Google Search Console to make sure your site is being indexed properly.
- Run a ScoreCraft audit to get a prioritized action plan covering SEO, conversion, and content.
- Use Lighthouse to check page speed if your site feels slow.
- Set up Ahrefs Webmaster Tools for ongoing technical monitoring if you have the time.
The biggest mistake we see is analysis paralysis — running five different tools, getting overwhelmed by hundreds of issues, and fixing nothing. Pick one tool, follow its top 5 recommendations, and take action this week. Progress beats perfection.
Get your website's Growth Score with a prioritized action plan — free.
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