LiteSpeed TTFB & HTTP Compression Checker
Accurately audit Time To First Byte (TTFB), network compression (Brotli/Gzip), HTTP/3 protocol support, and LiteSpeed Enterprise cache headers in real-time.
Millisecond-accurate timing breakdown
Wyrebase LiteSpeed Speed Simulator
See how your website would perform hosted on Wyrebase enterprise LiteSpeed infrastructure.
What is TTFB and why is it critical for SEO and Core Web Vitals?
Time To First Byte (TTFB) measures the duration between a browser requesting a webpage and receiving the very first byte of content from the server. According to Google Core Web Vitals, a TTFB over 800ms directly degrades Largest Contentful Paint (LCP) and hurts organic search rankings.
Legacy servers like Apache handle requests with process-based threading that chokes under load. In contrast, LiteSpeed Enterprise utilizes an event-driven architecture that serves dynamic WordPress and WooCommerce requests up to 9x faster, with native Brotli compression and server-level caching.
Compression Benchmark: Brotli vs Gzip vs Uncompressed
| Compression Method | Average Payload Reduction | Server CPU Impact | Browser Compatibility |
|---|---|---|---|
| Brotli (br) - Recommended | 70% - 85% reduction | Very low on static / Moderate | 97%+ browsers |
| Gzip (gzip) - Standard | 55% - 70% reduction | Low | Universal (100%) |
| Uncompressed (Plain text) | 0% (Unacceptable) | None | Penalized by Google |
Frequently asked questions about TTFB & LiteSpeed
What is considered a good TTFB by Google standards?
A TTFB under 200ms is rated "Good/Optimal", 200ms to 500ms is "Acceptable", and anything above 800ms is considered "Poor" and penalizes Core Web Vitals.
Why is Brotli compression superior to Gzip?
Developed by Google, Brotli achieves 20% to 26% higher compression density on text assets (HTML, JS, CSS) than Gzip, reducing page payload and speeding up mobile load times.
What is the x-litespeed-cache header and what do HIT / MISS mean?
It indicates whether the webpage was served directly from ultra-fast LiteSpeed RAM (HIT) without invoking PHP or MySQL, or if it had to be dynamically generated from scratch (MISS).
How can I reduce my website TTFB to below 200ms?
By migrating to an enterprise LiteSpeed host like Wyrebase, activating LSCache with Redis object caching, and utilizing NVMe SSD storage in RAID10.