No HTTP compression

How to fix it

Enable gzip or brotli on the server / CDN for HTML, CSS, JS, and JSON.

Sibling checks in this category

• Slow page response - Total response time is high. Slow pages cost rankings and conversions.
• Oversized HTML - The HTML payload is unusually large, slowing parsing and hurting Core Web Vitals.
• Slow time-to-first-byte - TTFB is high, indicating server or origin latency. This drags every other metric.

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