NexusBro website audit

npx add-mcp 'https://nexusbro.com/api/agents/mcp'

Built for founders and developers shipping without a QA team

Run a Free Website Audit in 30 Seconds

ChatGPT cannot crawl 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

Start your 14-day free trial →

30-day money-back guarantee · Cancel anytime · No questions asked

SeekerPro · $15.99/mo after the trial · Same name at checkout

Secure checkout by Stripe. Stop the trial anytime in Billing & Usage.

No site to check yet? Turn any messy idea into a pro AI prompt, free →

850+

Audits Completed

537

Active professionals

550,000+

Issues Found

Need more than free? Try SeekerPro free for 14 days → Or lock in Founding $15.99 $9.99/mo for life →

Founding gives full access right away · Cancel anytime

140+ audits in the last 30 days · 600,000+ pages audited · Built for developers

[

✨ New · Free · No account needed

AI Prompt Generator: turn any idea into a pro prompt for Claude Cowork, ChatGPT or Gemini

Type it messy. Get a prompt that gets you far better answers, and watch your prompt score jump. Seconds, any language.

Try it free →](https://nexusbro.com/prompt-gen)

600,000+

Pages audited

71+

Sites audited by our users

Weekly

Free re-check of your site, mailed on Mondays

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.

No URL handy? Ask any coding question free →

No account needed for your first question

Say Bye to Manual QA

Paste any URL. Get every bug, SEO gap, and speed issue. With the fix. Free.

• Responsiveness Mobile viewport, pinch zoom and tap target checks
• All Features Button names, form labels, skip links, JS errors in HTML
• Page Load Speed Load time, page weight, scripts, LCP and CLS risks
• Auth Flows Sign in and session code checklist with SeekerPro
• Stripe / Payments Exposed Stripe keys; webhook and plan checklist with SeekerPro
• SEO Audit Meta tags, sitemap, JSON-LD, canonicals
• Broken Links Pages that answer 404 or 500, empty image sources
• Content Quality Placeholder text, thin pages, duplicates
• Accessibility Alt text, ARIA labels, tap targets, heading order
• Security Scan API keys in client, env leaks, security headers
• Conversion Optimization CTA placement, dead end pages, analytics, email capture
• Retention Mechanics Welcome step, return triggers, unsubscribe links in your code
• Database Health RLS policies, indexed queries, user data tables in your code

4,400+ QA guides and benchmarks · 16 categories (10 free) · AI-powered fixes

Trusted by developers and startups worldwide

How It Works

1

Enter a URL

Paste any website URL. No signup required for your first scan.

2

Get your score

125+ quality factors analyzed across SEO, performance, accessibility, and security.

3

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	✅	❌	✅

Start your 14-day free trial →

Ready to fix your website?

Scan your first site for free. No signup needed.

15,000+ guides, checklists and site scores, free to browse, no account needed.

Ready for more? Try SeekerPro free for 14 days

Up to 250 pages per audit, 50 audits a day, our most powerful AI · Cancel anytime

Start your 14-day free trial →

Or choose Founding:Lock in $9.99/mo →

30-day money-back guarantee on every paid plan · cancel anytime

Get QA tips and product updates

Join developers who audit smarter. No spam, unsubscribe anytime.

Frequently Asked Questions

Is NexusBro really free?▶

Yes. With no signup you get 2 free audits a day, up to 5 pages each, 125+ QA checks and the top 3 fixes, no credit card. A free account gives you 3 audits a day on up to 10 pages, saves every report, opens one full fix prompt every day and mails you a free re-check of your site every Monday.

How is this different from Lighthouse?▶

Lighthouse checks one page at a time with about 10 metrics. NexusBro crawls your entire site running 125+ checks across performance, SEO, accessibility, and security, then generates a copy-paste fix prompt.

Is my website data private?▶

Your data is encrypted in transit and at rest, and we never sell your site data. A guest scan is unlisted: only someone with its link can open it. A member audit can be published on a public report page, and the leaderboard and Explore show your domain only after you share it.

What do I get with SeekerPro?▶

Up to 250 pages per audit, 50 audits a day (free: 3), the full SEO report (64 checks and its fix prompt), our Frontier AI model (our most powerful) with an elite fix plan, faster audit crawls, and the Conversion, Retention and Database audit categories for $15.99/month. Founding members lock the same SeekerPro plan in at $9.99/mo for life.

How does the fix prompt work?▶

After each audit, NexusBro generates a code prompt you can paste into Claude Code, Windsurf, or any AI coding tool. It contains every issue found with fix instructions.

Can I cancel anytime?▶

Yes. Cancel anytime from your account. No contracts, no penalties. Your audit history is kept even on the free plan.

Start your 14-day free trial →

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.