Frontend performance checks before launch
A compact checklist for images, JavaScript, layout shifts, font loading, and the details that make a site feel fast.
Performance is easiest to protect when it becomes part of the launch checklist instead of a rescue mission after release.
Images should have real dimensions, sensible compression, and loading behavior that matches their place on the page.
JavaScript should be measured by user value. If a script does not improve the first experience, it should probably wait.
The details add up: font loading, layout stability, cache headers, and removing unused code all make the interface feel more confident.