How is the technical Score calculated?

The SEOJuice technical score (0-100) is made up of three main components plus bonus points:

1. Performance Score (35 points)

- Measures Core Web Vitals (20 points):

- LCP (Largest Contentful Paint): How fast the main content loads

- FID (First Input Delay): How quickly the page responds to clicks

- CLS (Cumulative Layout Shift): How stable the page is while loading

- Measures Page Speed (15 points):

- TTFB: Initial server response time

- DOM Load: How fast the page structure loads

- Full Load: Complete page load time

2. Resource Optimization (25 points)

- Checks JavaScript issues:

- Unminified files

- Render-blocking scripts

- Unused code

- Checks CSS issues:

- Unminified stylesheets

- Render-blocking styles

- Unused styles

- Checks Image issues:

- Uncompressed images

- Wrongly sized images

- Old image formats

- Evaluates compression and caching

3. Server & Security (30 points)

- Protocol features (10 points):

- HTTP/3 support

- HTTP/2 support

- DNS prefetch

- Resource preconnect

- Preload enabled

- Security features (20 points):

- SSL certificate

- HSTS enabled

- Modern TLS version

- Security headers

4. Bonus Points (up to 10 extra points)

- HTTP/3 enabled (+3)

- Critical CSS inlined (+2)

- Lazy loading enabled (+2)

- Perfect Core Web Vitals scores (+3)

The final score:

- Starts at 100

- Subtracts points for issues in each category

- Adds bonus points

- Is capped at 100 and floored at 0

- Is rounded to the nearest integer

The code includes safety checks to handle missing data and prevents errors if certain metrics aren't available.