Website Speed Test (Mobile + Desktop)

What a website speed test should actually tell you

A useful speed test doesn't just hand you a score. It explains what slowed the page down, which fixes are worth doing first, and how the results change after you ship updates.

SpeedScan.ai is designed to make the report practical—so you can go from 'scan' to 'improvement' without guessing.

• LCP: how fast the main content appears
• INP: how responsive the page feels when you interact
• CLS: whether the layout jumps while loading
• TTFB: how quickly your server starts responding

Common causes of slow websites

Slow sites are usually caused by a mix of oversized images, heavy scripts, third-party tags, and weak caching. Mobile performance tends to suffer first, because real devices and real networks are less forgiving.

The fastest wins usually come from compressing images, trimming scripts, and fixing the biggest render blockers—then re-scanning to confirm the gain.

Run a scan and turn it into a fix-first plan

A speed report only helps when it changes what you do next. SpeedScan.ai is built for that moment: it explains your metrics in plain English, highlights the fixes that usually create the biggest real-world improvement, and helps you confirm progress with re-scans.

If you're working on a client site, an eCommerce store, or a marketing landing page, this workflow saves time because you focus on the few changes that actually move the needle.

• Scan desktop and mobile separately
• See Core Web Vitals (LCP, CLS, INP) and key timing metrics
• Get a practical AI summary that prioritizes fixes by impact
• Track scan history to prevent regressions

Frequently Asked Questions