Page Speed
How quickly pages load. Each additional second decreases conversions by approximately 7%.
1 min readLast updated Apr 2026
Quick Reference
CategoryConversion Rate Optimization
Related Terms1
How quickly pages load. Each additional second decreases conversions by approximately 7%.
Why It Matters
Speed equals money. A 1-second delay in page load can reduce conversions by 7% and increase bounce rates by 11%. Mobile users are especially impatient. Fast sites also rank better in Google. Every 100ms improvement impacts revenue.
Practical Example
Scenario
A furniture brand's product pages load in 5.2 seconds. After optimization (image compression, lazy loading, CDN), load time drops to 2.1 seconds.
Calculation
3.1 seconds faster × ~7% conversion impact per second = ~22% potential improvementResult
Actual measured results: mobile bounce rate drops 18%, conversion rate increases 14%. Estimated annual revenue impact: $340,000.
Pro Tips
- 1Compress and properly size images—they're typically 50%+ of page weight
- 2Implement lazy loading for below-the-fold images and content
- 3Use a CDN to serve assets from locations near users
- 4Minimize and defer JavaScript that blocks rendering
Common Mistakes to Avoid
Adding apps and scripts without measuring their speed impact
Using massive, uncompressed product images
Ignoring mobile speed—often 2-3x slower than desktop