RTT and Site Speed: SEO Performance with Core Web Vitals
- Tarık Tunç

- Sep 23
- 2 min read
Site speed has become one of the most critical factors in SEO performance. Google's Core Web Vitals metrics measure speed, interactivity, and visual stability, which directly impact user experience. RTT (Round Trip Time), in particular, plays a significant role in page load speed. By 2025, site speed will become a more significant factor in search rankings.
Core Web Vitals and Site Speed SEO Impact in 2025
With Google's 2025 updates, site speed continues to be a critical factor in SEO performance. Core Web Vitals metrics (LCP, INP, CLS) are among the most important criteria for measuring user experience. Slow-loading sites not only lose users but also fall behind in search results.
What is RTT (Round Trip Time) and Why is it Important?
RTT is the time it takes for a request from the user's browser to reach the server and return a response. This value, measured in milliseconds, directly impacts page load speed. CDNs, caching, and fast DNS solutions are common methods for reducing RTT.

How Does Site Speed Affect SEO Performance?
Google has made site speed a ranking factor based on users' expectations of fast access. High RTT and low Core Web Vitals scores increase bounce rates and shorten session duration. Research shows that a 1-second delay in page load time can lead to a loss of up to 7% in conversions.
Points to Consider When Measuring Core Web Vitals
Google's latest data
In its 2025 report, Google announced that fast sites offer up to 20% higher visibility in mobile search results. This translates to increased revenue and traffic, particularly for e-commerce and content sites.
Experts' evaluations
SEO experts emphasize that technical optimizations are crucial not only for rankings but also for user engagement. Improving image optimization, caching, and server response time are among the most critical steps.
Site speed continues to be a determining factor in SEO performance. Regularly measuring Core Web Vitals, minimizing RTT time, and implementing user-focused optimizations are essential to staying competitive. Businesses seeking to stand out in search results in 2025 and beyond need to prioritize speed and experience.
👉 Test your site's speed, regularly monitor your Core Web Vitals scores, and don't postpone technical SEO improvements. The steps you take today will determine your rankings tomorrow. blakfy.com



