This test determines how many externally linked resources your page relies on. Linked resources include images, stylesheets and other objects. Each externally linked resource requires a separate request across the network. This may add a significant amount to the page load time in the mobile context.
Constraints on the number of external resources
Following the W3C mobile web best practice, there are two constraints which contribute to the outcome of this test, and should be noted:
If the total number exceeds 20, then your page will receive a FAIL message.
Should you receive a FAIL then you should consider if it is possible to build your page using fewer external resources.
Reference
This test is based on a W3C mobileOK best practice test. See http://www.w3.org/TR/mobile-bp/#EXTERNAL_RESOURCES for more details.
Leave a Reply