Free website speed testCore Web Vitals checkerLighthouse performance score

Finally understand why your site is slow — in plain English

Website audits for non-developers. We translate performance reports, SEO issues, and security problems into plain-English explanations and step-by-step fixes. No jargon. No developer required.

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Free — no signupCheck Core Web VitalsInstant Lighthouse report
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Deep analysis, every angle

Performance

Core Web Vitals (LCP, INP, CLS), page speed score, load-time optimization, JavaScript performance.

SEO analysis

Meta tags, structured data (Schema.org), robots.txt, sitemap, Open Graph, technical SEO audit.

Security scan

SSL certificate, security headers (CSP, HSTS, X-Frame-Options), XSS protection, HTTPS enforcement.

Accessibility

WCAG 2.1 compliance, ARIA attributes, color contrast, keyboard navigation, screen-reader compatibility.

Mobile ready

Responsive design, viewport configuration, touch targets, mobile-first optimization, tap delay.

Image optimization

Modern formats (WebP, AVIF), compression, lazy loading, srcset, responsive images, CDN delivery.

View all features →
Best website speed test tool

Why choose RoastWeb

Website audits in plain English for non-technical users, business owners, and marketers — complex technical reports turned into insights you can actually act on.

Complete Website Performance Audit

Unlike basic website speed tests, we analyze 15+ categories: page speed, Core Web Vitals, technical SEO, accessibility, security, mobile optimization, images, scripts, and more. The most comprehensive free SEO audit tool available.

15+
Scan Categories

Powered by Google Lighthouse

Built on Google Lighthouse and PageSpeed Insights API. Check Core Web Vitals (LCP, INP, CLS) with real Chrome user data. Same Lighthouse performance score and metrics Google uses for search rankings. Best PageSpeed Insights alternative.

100%
Google Accurate

Plain English Explanations

No tech jargon. We translate confusing technical issues into clear explanations anyone can understand. Each problem comes with a simple breakdown of what's wrong, why it matters, and exactly how to fix it - no developer required.

100%
Jargon-Free

Fastest Website Speed Test

No waiting 5-10 minutes like other website performance tools. Our optimized scanning engine delivers comprehensive Lighthouse reports and Core Web Vitals analysis in 10 seconds. Run multiple website speed tests during development cycles.

10sec
Avg Scan Time

Complete Security Audit

Beyond page speed - we check SSL certificates, security headers (CSP, HSTS, X-Frame-Options), XSS protection, and HTTPS implementation. Your website audit data is encrypted and never shared with third parties.

SOC 2
Compliant

Website Monitoring API

Integrate automated website performance audits into your CI/CD pipeline. Pro plan includes REST API access for continuous Core Web Vitals monitoring, batch website speed testing, and custom performance dashboards.

REST
API Access
10,000+
Websites analyzed
50,000+
Scans performed
2.3s
Avg performance gain
4.8/5
User rating

Scan process

Three steps to optimization

01
01

Paste URL

Enter your website URL. No registration required.

02
02

Run scan

Our engine analyzes 15+ categories in real time.

03
03

Get fixes

Receive actionable insights and AI-powered fix prompts.

Trusted by developers

What users say

★★★★★

"RoastWeb saved me hours of manual testing. The AI-powered fix suggestions are incredibly detailed - it literally gave me the exact code to paste. Went from 45 to 92 PageSpeed score in one afternoon."

Sarah Chen
Senior Frontend Developer
TechCorp
★★★★★

"As an agency, we run audits for 50+ clients monthly. RoastWeb's white-label reports are professional, comprehensive, and clients love the clean reports. The batch scanning API is a game-changer."

Marcus Rodriguez
Founder & CEO
Digital Growth Agency
★★★★★

"Finally, a performance tool that checks EVERYTHING - not just speed. Found critical security headers we were missing, accessibility issues, and SEO gaps. The free tier alone is better than paid alternatives."

Alex Thompson
Full-Stack Developer
Startup Founder
Trusted by 500+ agencies4.8/5 average rating10,000+ sites analyzed
Pricing

Choose your plan

Free

$0
forever
  • 3 scans/day
  • Full analysis suite
  • Performance & Core Web Vitals
  • SEO fundamentals
  • Security headers & SSL
  • Accessibility (WCAG)
  • Image optimization
  • Mobile responsiveness
  • Public shareable reports
  • Embeddable badges
  • Community support
Start free
Most popular

Pro

$29
per month
Everything in Free, plus:
  • Unlimited scans
  • AI Deep Analysis
  • Extended AI insights
  • Priority processing
  • Advanced analytics dashboard
  • Historical tracking
  • API access with webhooks
  • Remove RoastWeb branding
  • Download PDF reports
  • Priority email support
  • Team collaboration (3 seats)
Upgrade now

Agency

$99
per month
Everything in Pro, plus:
  • White-label reports
  • Custom branding (logo, colors)
  • Custom domain support
  • Deep competitor analysis
  • Batch roasting (unlimited)
  • Unlimited team members
  • Client management portal
  • Advanced webhook integrations
  • Advanced API rate limits
  • Priority phone support
  • Dedicated account manager
Upgrade now

Frequently asked questions

What is a website performance audit and why do I need one?
A website performance audit analyzes your site's speed, SEO, security, and user experience. It identifies issues hurting your Google rankings, conversion rates, and user engagement. Our scan checks 15+ categories including Core Web Vitals, technical SEO, accessibility, and security vulnerabilities.
How does RoastWeb's site speed test work?
Paste your URL → Click "Roast My Site" → Get results in 10 seconds. We use Google PageSpeed Insights API (Lighthouse), analyze Core Web Vitals (LCP, INP, CLS), run 15+ custom security and SEO checks, then provide AI-powered fix suggestions with code snippets.
Is RoastWeb really free? What are the limits?
YES - completely free with 3 scans/day. No credit card, no signup required. You get full analysis reports, shareable links, and basic fixes. Pro plan ($29/mo) unlocks unlimited scans, AI Deep Analysis, PDF exports, API access, and priority scanning.
How accurate are your Core Web Vitals measurements?
We use Google's official Lighthouse API - the same technology behind PageSpeed Insights. Our Core Web Vitals data (LCP, INP, CLS) comes from real Chrome user experiences (CrUX dataset). This is the exact data Google uses for search ranking.
What's the difference between RoastWeb and Google PageSpeed Insights?
PageSpeed only shows problems. RoastWeb shows problems + AI-powered solutions with code snippets. We also add 10+ checks PageSpeed doesn't have: SEO meta tags, accessibility issues, security headers, mobile optimization, image analysis, and more. Plus you get shareable reports and embeddable badges.
Can I use RoastWeb for client reports and agency work?
Absolutely! Pro plan includes PDF exports perfect for client presentations. Agency plan ($99/mo) adds white-label reports, custom branding, batch scanning for multiple sites, competitor analysis, unlimited team members, and priority support.
Do you store my website data or scan results?
We store scan results for 30 days so you can share links and track improvements. Your website data is encrypted and never shared with third parties. We're SOC 2 compliant. You can delete reports anytime from your dashboard. Free scans are public; Pro scans can be private.
How often should I run website performance audits?
Run audits after every major deployment, code change, or content update. Pro users typically scan weekly to monitor Core Web Vitals trends. Use our API to integrate scans into your CI/CD pipeline for automatic testing before production deploys.
What technical SEO issues can RoastWeb detect?
We check meta titles/descriptions, heading structure, canonical tags, robots.txt, sitemap.xml, structured data (schema.org), Open Graph tags, Twitter Cards, mobile-friendliness, HTTPS implementation, security headers, page load speed, and 50+ other ranking factors.
Can I integrate RoastWeb into my development workflow?
Yes! Pro plan includes REST API access. Integrate scans into GitHub Actions, GitLab CI, Jenkins, or any CI/CD pipeline. Auto-scan on pull requests, block deployments if performance drops below thresholds, and track metrics over time in custom dashboards.
View all FAQs →

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Get a plain-English website audit in 10 seconds.

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