How to export lower file size vectors for xcode

Hi !


I've been exporting my assets as PDF from Sketch and thought everything was good, resolution is great.

But now I realized each of my pdf images are like 50 MB file size !! We're supposed to keep the app size low right ?

I followed articles and tutorials correctly but none of them approaches this problem.

Does anyone know how to export PDFs in a lower file size ? Or the best way to deal with this is to go back to the good old @1x, @2x, @3x ?

Thanks.