Performance 
Lighthouse performance checklist 
Below is a list of items that you can use to quickly audit the performance of your application. This list is not exhaustive, but rather a starting point.
WARNING
Please remember that the Lighthouse score should be checked only on the production build.
Performance 
- Images have appropriate resolution
 - Images are in 
WebPformat - Third part code is loaded asynchronously
 - Images are lazy loaded
 - All custom event listeners are destroyed with their components
 
Accessibility 
- All images are described by 
altattribute - Contrast is correct
 aria-labelare added to HTML tags
Best Practices 
httpsconnection is used- Page follows a semantic HTML structure
 
SEO 
robots.txtis added- All pages have metadata (title, description, tags)