Static Resources should be used to serve JavaScript, CSS and images
Impact area
Performance
Severity
Medium
Affected element
Apex Page
Rule ID
SF-0124
Impact
Inefficient delivery of page components to the client can result in slow page load times.
Remediation
Use static resources to serve JavaScript files, as well as images, CSS, and other non-changing files. JavaScript and other assets served this way benefit from the caching and content distribution network (CDN) built into Salesforce.
Time to fix
30 min
References
See the Salesforce documentation article: