Shahab Abbasi
    Checklists

    Page Speed Optimization Checklist

    Step-by-step checklist to fix slow websites. Covers image optimization, caching, CSS/JS minification, lazy loading, and Core Web Vitals.

    Speed Score 90+ | Step-by-Step | CWV Ready

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    What's Inside

    Image optimization (WebP, compression, lazy load)
    CSS/JS minification & deferral
    Browser caching setup
    Server response time fixes
    Core Web Vitals fixes
    WordPress-specific speed tips

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    1Image Optimization

    Convert images to WebP/AVIF formatCritical
    Compress images (TinyPNG, ShortPixel)High
    Implement lazy loading for below-fold imagesHigh
    Specify image dimensions (width/height)Medium
    Use responsive images (srcset)Medium

    2CSS & JavaScript

    Minify CSS and JavaScript filesHigh
    Defer non-critical JavaScriptCritical
    Remove unused CSSMedium
    Inline critical CSS above the foldHigh
    Bundle and tree-shake dependenciesMedium

    3Server & Caching

    Enable browser caching (cache headers)High
    Implement CDN (CloudFlare or similar)Medium
    Reduce server response time (TTFB < 200ms)High
    Enable GZIP/Brotli compressionHigh
    Use HTTP/2 or HTTP/3Medium

    4Core Web Vitals Targets

    LCP (Largest Contentful Paint) < 2.5sCritical
    FID (First Input Delay) < 100msCritical
    CLS (Cumulative Layout Shift) < 0.1Critical
    INP (Interaction to Next Paint) < 200msHigh
    Pro Tip

    Took client from 34 to 91 speed score. Bounce rate dropped 40%.

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