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 performance in one click.

Measure your site performance with and without SXG

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.