Translating Java to Kotlin at Scale

Meta shifted their giant Android codebase from Java to Kotlin over years.

Why xHE-AAC is being embraced at Meta

Meta adopts xHE-AAC to pump up audio quality across their apps.

Retrofitting null-safety onto Java at Meta

Meta’s Nullsafe tool catches Java null errors before they crash apps.

From zero to 10 million lines of Kotlin

Meta ditched Java for Kotlin across their massive Android codebase.

Superpack: Pushing the limits of compression in Facebook’s mobile apps

Meta’s Superpack squeezes their apps smaller than ever before.

Hermes: An Open Source JavaScript Engine Optimized for Mobile Apps

Meta’s Hermes makes JavaScript run lean and mean on mobile devices.