Free tool

Page Speed Checklist

A practical LCP/CLS/INP checklist for faster pages.

Core Web VitalsChecklistInstant

100% Free to use
No credit card required
Works offline in your browser

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Why it helps

Actionable steps

Check the most common performance bottlenecks.

Fast reviews

Use as a pre-launch QA checklist.

Performance

Page speed checklist

Core Web Vitals

Optimize hero image and preload itReduce JS bundle size and split routesUse server caching and CDN for assetsAvoid layout shifts (reserve space for media)Minimize third-party scriptsUse modern image formats (WebP/AVIF)Defer non-critical CSSReduce font loading and use font-displayLimit DOM size and heavy animations

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How to use Page Speed Checklist for Maximum Social Media Growth

Supercharge your online reach with the Page Speed Checklist. Specifically built to help marketers, SEO specialists, and creators a practical lcp/cls/inp checklist for faster pages. to boost algorithm visibility and conversion rates.

1. Select & Input

Upload your file or enter content directly in your web browser. 100% private and runs locally on your device.

2. Optimize & Format

Adjust settings, crop dimensions, or refine text tailored for social media algorithms and resolution standards.

3. Publish & AutoPost

Download your high-quality asset or push directly to Auto Poster AI to schedule automated posts across all channels.

Actionable steps

Check the most common performance bottlenecks.

Fast reviews

Use as a pre-launch QA checklist.

Why Formatting Consistency Matters

Social media algorithms favor content that meets platform recommendations. Using optimized tools like Page Speed Checklist helps prevent compression artifacts, aspect ratio distortion, and text cut-offs on mobile feeds.