Built for founders and developers shipping without a QA team
Run a Free Website Audit in 30 Seconds
ChatGPT cannot open your live site. NexusBro crawls it, runs 125+ real checks (SEO, speed, security, mobile) and hands you one fix prompt to paste into Cursor, Claude Code, Lovable or Bolt.
Try SeekerPro free for 14 days · your whole site, every fix
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SeekerPro · $15.99/mo after the trial · Same name at checkout
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Not a website owner? Turn any messy idea into a pro AI prompt, free →
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140+ audits in the last 30 days · 600,000+ pages audited · Built for developers
Popular audits this week
See how top sites score
What users are saying
“Replaced Screaming Frog for our team. The AI fix prompts cut audit time in half.”
Dev Lead, Series A Startup
“The fix prompts save hours of debugging. I paste, run, and issues are gone.”
Solo Founder
“Finally a web-based audit tool that actually works at scale. No install needed.”
Agency Owner
Key Takeaways
NexusBro is an AI-powered website QA audit tool that runs 125+ checks per page across SEO, performance, accessibility, security, and code quality, then generates copy-paste fix prompts.
- Runs 125+ QA checks per page across SEO, performance, accessibility, and security.
- Free website audit in 30 seconds, with no signup required.
- Full-site crawl: 5 pages free with no signup, 10 with a free account, up to 250 on SeekerPro.
- Plans: Free $0 (up to 10 pages), Founding $9.99/mo locked for life, SeekerPro $15.99/mo.
- Generates AI-powered fix prompts you can paste into your editor.
Say Bye to Manual QA
Paste any URL. Get every bug, SEO gap, and speed issue. With the fix. Free.
Responsiveness
All screen sizes from 320px to 4K
All Features
Buttons, forms, navigation, search, scroll
Page Load Speed
FCP, LCP, TTFB, CLS optimization
Auth Flows
Signup, signin, OAuth, sessions, signout
Stripe / Payments
Checkout, webhooks, gating, pricing pages
SEO Audit
Meta tags, sitemap, JSON-LD, canonicals
Broken Links
404s, dead links, missing images
Content Quality
Placeholder text, thin pages, duplicates
Accessibility
Contrast, touch targets, alt tags, ARIA
Security Scan
API keys in client, env leaks, XSS
Conversion Optimization
CTAs, funnels, exit-intent, social proof
Retention Mechanics
Engagement hooks, stickiness, return triggers
Database Health
Schema coherence, RLS, query performance
4,400+ QA guides and benchmarks · 16 categories (10 free) · AI-powered fixes
Trusted by developers and startups worldwide
How It Works
Enter a URL
Paste any website URL. No signup required for your first scan.
Get your score
125+ quality factors analyzed across SEO, performance, accessibility, and security.
Run the fix
AI generates code prompts you can execute directly in Claude Code, Windsurf, or any AI tool.
NexusBro vs Screaming Frog vs Lighthouse
| Feature | NexusBro | Screaming Frog | Lighthouse |
|---|---|---|---|
| Web-based (no install) | ✅ | ❌ Desktop app | ✅ Limited |
| AI fix prompts | ✅ | ❌ | ❌ |
| Self-learning engine | ✅ | ❌ | ❌ |
| Free tier | ✅ | ✅ 500 URLs, desktop app | ✅ |
| Full site crawl | ✅ | ✅ | ❌ Single page |
| API access | ✅ | ❌ | ✅ |
Ready to fix your website?
Scan your first site for free. No signup needed.
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Up to 250 pages per audit, 50 audits a day, our most powerful AI · Cancel anytime
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Frequently Asked Questions
Is NexusBro really free?▶
How is this different from Lighthouse?▶
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What Is NexusBro QA?
NexusBro is an AI-powered website quality assurance tool that audits any site for performance bottlenecks, SEO issues, accessibility gaps, security misconfigurations, and code quality problems. Paste a URL, select your audit categories, and receive a comprehensive fix-ready prompt you can run in your preferred AI coding tool to resolve every issue found.
Traditional QA is slow and expensive. Manual testing across performance, SEO, accessibility, security, and code quality can take days for a single site. NexusBro automates the entire process: it crawls your pages, runs hundreds of checks per page, identifies real issues with severity rankings, and generates actionable fix instructions. Compare audit tools and see how the result is a detailed prompt that works with Claude Code, Windsurf, or any AI coding tool.
With a free account you get 3 audits per day covering up to 10 pages each; without signing up you still get 2 quick audits a day (up to 5 pages). SeekerPro unlocks 50 audits per day with up to 250 pages per audit. Every plan crawls your pages and runs the 10 free QA categories; SeekerPro adds the Conversion, Retention and Database checks.
Whether you are a solo developer shipping a side project, a QA engineer at a startup, or a technical lead managing dozens of production sites, NexusBro saves hours of manual review and catches issues human testers miss. Hundreds of thousands of pages have been audited on the platform, with results improving by an average of 15-25 points after implementing the generated fixes.