Free Website Speed & Error Checker

Why test website speed?

Website speed isn't just about user experience — it's an official Google ranking factor. Since 2021, Core Web Vitals (LCP, INP, CLS) directly affect search positions. A slow site means lower rankings, fewer clicks, lost revenue.

Google reports 53% of users abandon a site that takes longer than 3 seconds to load. Speeding up by 1 second increases conversion by ~7%. Regular speed testing is essential — minimum once a month.

What does this tool check?

Our free analyzer uses Google PageSpeed Insights API and Lighthouse — the same tech Google uses to rank your site. Four categories:

• Performance — loading speed, Core Web Vitals, interactivity.
• SEO — technical optimization, meta tags, structured data, indexability.
• Accessibility — WCAG compliance, contrast, alt-tags, keyboard navigation.
• Best Practices — HTTPS, deprecated APIs, security, console errors.

Core Web Vitals — Explained

• LCP (Largest Contentful Paint) — loading time of the largest element. Goal: <2.5s. Improve via: faster server, preload, image optimization, CDN.
• INP (Interaction to Next Paint) — delay before responding to user interactions. Goal: <200ms. Improve via: reducing JS, web workers, debouncing.
• CLS (Cumulative Layout Shift) — cumulative layout shift during loading. Goal: <0.1. Improve via: image dimensions, reserved ad space, font-display: swap.

Top 10 reasons sites are slow

1. Unoptimized images — most common. Solution: WebP/AVIF, lazy-load.
2. Large JS bundles — unused libraries. Solution: code splitting.
3. Render-blocking CSS — Solution: critical CSS inline.
4. Slow hosting — Solution: upgrade, CDN, caching.
5. Third-party scripts — Solution: lazy-load, async, defer.
6. Google Fonts — Solution: self-host, preload.
7. No CDN — Solution: Cloudflare (free).
8. Heavy WordPress — Solution: optimize or migrate to Next.js.
9. Old video formats — Solution: H.265, WebM.
10. Layout shift — Solution: set image dimensions.

Need help speeding up your site?

If your site scores low, we can help. Our SEO & Performance service includes:

• Full technical audit (20+ page PDF)
• Image optimization (AVIF/WebP)
• JS/CSS minification and tree-shaking
• Cloudflare CDN integration
• Server and database optimization
• Schema markup implementation
• 1 month Core Web Vitals monitoring

Result guarantee: 90+ Mobile, LCP <2s. Pricing: $500-$2,500. Timeline: 1-3 weeks. Free consultation.

Other useful resources

• All Innosoft services
• Web development in Tashkent
• Our portfolio