Upgrading SD card in a raspberry pi 4 emulator

This summer, I built a raspberry pi recalbox emulator. When I put the build together, I figured 64gb would be enough. But after months of messing around with it, I need more space.

What is the best way to upgrade the card? I figured I would have to go through the process of downloading the recalbox image to the card and basically do a clean reinstall. But I also found information about increasing the partition size. But searches I found were unclear and outdated. Do I need to do a new install of the recalbox os or can I use some other program to do it easier?

I don't know. But if their own forums doesn't have the info you could ask people there with you own query about migrating an image to the new card vs clean install.

I believe you can clone and migrate the info on the original SD card and I assume you should be able to migrate it to the new one. You may have to hunt down the info on the raspberry pi wiki or tinker around with some of the programs they, or someone else, offers.