Frequently Asked Questions

503 Error

503 error means your server is overloaded. Usually it happens on limited shared hosting, when CPU and/or memory is limited by the hosting provider…

Advanced Cache Control issue

If you see Advanced Cache Control doesn’t supported on your server warning message…

AMP issues

Swift automatically detects AMP and exclude it from optimization. If it is not working you can…

Autoload Size Issues

If Autoload Size shows SHOULD FIX warning it means it is bigger than ideal. You can clean up…

Cache Path Error

If you get cache path error, it usually happens when…

Cache size

If cache size is growing continuously, or it is too big…

CSS is missing

When CSS is missing, usually the problem is that multiple cache are active…

Duplicated rules in htaccess

If you can see multiple Swift Performance blocks in htaccess, usually it can caused by 2 things…

FOUC

If you have FOUC issues (site loads without styling for a sec) you may need to…

Google Maps not working

If Google Maps is not loading you should check the…

High CPU usage

Usually it happens on small VPS, or limited shared hosting, when CPU is limited by the hosting provider…

Missing Icons

If icons are missing, there are 2 common issues: critical fonts, or improper cache settings…