The heavy graphics and media files (common in games).
You can convert these files using online extractors, specialized mobile apps, or desktop scripts: online convert xapk to apk repack
There are two main reasons users look for an online converter: The heavy graphics and media files (common in games)
Online-only quick procedure (if you insist on web tools) specialized mobile apps
Before we fix the problem, let’s understand it. An (Android Package Kit) is the standard file format Android uses to distribute apps. However, as apps grew bigger (think massive games like Genshin Impact or Call of Duty), Google introduced a new format called Split APKs .
Using online tools is the fastest method because many of them process the files directly in your browser, meaning you don't even have to wait for a large upload. YouTube·Explaining Android