How do you optimize extension source code like base64String?

[JEWEL]

Just add these rules to your existing proguard configuration.

-obfuscationdictionary dictionary.txt
-classobfuscationdictionary classes.txt
-packageobfuscationdictionary packages.txt

Example.txt

HhGhvsjbhbzgsjbhbzhkjHG
JHhbshbHoftOfHhfgjkbGHi
JJgsUEwOobREJJvtwisobs
jFjaojabOsboalwbIbwowbos

Learn more from the original documentation.