Signed Exchanges Performance Testing

Measure the SXG Impact
on Your Website

Discover how Signed HTTP Exchanges can supercharge your Core Web Vitals.
Compare regular vs SXG-cached performance in one click.

💡 Tip: Test pages that support SXG for meaningful results

What is SXG?

Signed HTTP Exchanges (SXG) is a technology that allows Google to prefetch and cache web pages while preserving the original URL and origin. When users click a search result, the page loads instantly from Google's cache, dramatically improving Core Web Vitals.

🚀 Instant page loads from search
📊 Better Core Web Vitals scores
🔒 Preserves your domain & analytics
🎯 Improved SEO rankings
Go to AlphaSXG Homepage

Ready to Unlock Google Preloading?

Join forward-thinking SEO teams using AlphaSXG to dominate search results with instant page loads.

No credit card required

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10-minute setup
No code changes
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How the Test is Conducted

1

Enter Your URL

Provide the URL of a page that supports SXG (Signed HTTP Exchanges) through Google's cache.

2

Regular Test

We first load your page normally, measuring all Core Web Vitals and capturing a visual filmstrip.

3

SXG Test

We then simulate Google Search behavior: prefetch the SXG-cached version and measure performance.

4

Compare Results

See the improvement in LCP, FCP, TTFB and other metrics with clear visual comparisons.