a web perfomance introduction and why you should care;

alyson farias - Jun 19 - - Dev Community

Improving the performance of your website/web product impacts several critical metrics:

  • User Satisfaction and Retention
  • Cost Savings
  • Competitive Advantage
  • Improved SEO
  • High Conversion Rate

Before diving in, let's define two key metrics:

  • Bounce Rate: Percentage of visitors who leave your website after viewing only one page, indicating engagement.
  • Conversion Rate: Measures how effectively your site turns visitors into customers or leads.

Impact of Page Load Time

As page load time increases, so does the bounce rate:

  • Increasing load time from 1 to 3 seconds raises bounce probability by 32%
  • Deloitte found that a jump from 1 to 5 seconds increases bounce probability by 90%.
  • A 10-second load time increases bounce probability by 123%. (Google/SOASTA, 2017).

Financial Implications

For example:

  • eBay's 100-millisecond speed improvement increased add-to-cart rates by 0.5%, leading to 50,000 more monthly transactions.
  • BMW's adoption of Progressive Web Apps (PWA) boosted traffic by 8 to 40%. (Milliseconds Make Million from Deloitte)

Strategies for Improvement

Improving Conversion Rate:

  • Optimize User Experience: Simplify the user journey.
  • Enhance Content Quality: Ensure relevance and persuasion.
  • A/B Testing: Experiment with different versions for better performance.

Reducing Bounce Rate:

  • Improve Page Load Speed: Ensure fast loading times.
  • Enhance Content Relevance: Align content with visitor intent.
  • Engage with Design: Create an intuitive and attractive layout.

if you are a web developer and need to know little more about key metrics to measure web perfomance

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