To me, it means convenient or lending a helping hand to someone.
I thought about the definition of handy when I understood that not everyone thinks the word "handy" has that definition. For example, to obtain my Google data, Google created 88 1 GB zip files. Thus, in order to completely have a backup of my data, I am going to need to click Download 88 times. There are 594 opposite words and antonyms for handy that you can review here: https://www.wordhippo.com/what-is/the-opposite-of/handy.html
I don't actually mind one aspect of this. I like that Google split up my data into files - that makes sense to me. What doesn't make sense is the use of the word "handy" to describe manually downloading 88 zip files.And right there is the meat and potatoes of this situation. My presumption is that no matter how many files would be required to download a person's Google data, the words would be the same. Someone could have 100 GB of data and Google would split that person's data into 100 Zip files or someone could have 200 GB of data and Google would split that person's data into 200 Zip files and Google would still display the text that I saw. Imagine being the fictional user with 200 GB of data and seeing this: Since this archive is too big for a single file, we've split it into 200 handy packages. Thus, the lesson to be extrapolated from what I saw this morning is to never presume that adjectives are appropriate in auto-generated messages and warnings.
Here's something even worse than presuming downloading 88 files is handy: it's more than 88 files! There are at least 2 MP4 files that are larger than 1 GB so when I clicked to download a .zip file, it wasn't a .zip file that was downloaded. Thus, when I clicked to download file 27:
