IPA: /ˈdaʊnˌloʊdəbl/
KK: /ˈdaʊnˌloʊdəbl/
Able to be transferred from the internet to a computer or device.
The software is available in a downloadable format for easy installation.
Downloadable → It is formed from "down" (meaning from a higher place to a lower place) and "load" (from Old English "ladan", meaning to carry or bring). The suffix "-able" (meaning capable of) indicates that something can be downloaded. Thus, "downloadable" refers to something that can be carried or brought down from a higher source, typically the internet, to a lower device.
Think of 'bringing something down' ('down') and 'carrying it' ('load') to remember that 'downloadable' means something that can be brought down to your device.
No commonly confused words.