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Performance refers to how quickly and efficiently a website or app can load and function for an end user. Good performance is important because it improves the user experience, which can increase user engagement and search engine rankings. Several factors affect the performance of a website or app, including design, content, HTTP requests, images, code, compression, the quality of the underlying hosting service, etc.
Common Causes of a Slow Website:
- Serving Unoptimized Images
- Not Utilizing Caching
- No Content Delivery Network
- Unoptimized Code
- Excess HTTP Requests
- Not Using Gzip or Brotli Compression
- Too Much Database Overhead
- Out of Date Technologies
- Not Enough Server Resources
Core Web VitalsGoogle’s Web Vitals is an effort to give unified guidance to webmasters on quality website signals that typically lead to a better user experience. Core Web Vitals are the part of Web Vitals that apply to all web pages, that all site owners should measure, and that will be shown in all Google tools. Each of the Core Web Vitals represents a different part of the user experience, can be measured in the field, and shows the real-world experience of a key user-centric outcome. The current set of Core Website Vitals focuses on three parts of the user experience: loading, interactivity, and visual stability. These are measured using the following metrics:
Metrics and Guidelines