As mentioned in November 2018, PSI versions 1 through 4 are being deprecated.
Version 5 is the current recommended API version.
Soon, versions 1-4 will offer reduced functionality to help indicate their end of life.
Before Q3 2019, these APIs will be disabled and their HTTP endpoints will be removed.
You should take action now to upgrade any systems that use the old PSI API.
/v{1-4}/runPagespeed → /v5/runPagespeed
MobileReady -> Search Console’s Mobile Friendly API
OptimizeContents -> pursue other optimization services/APIs; squoosh for manual image optimization
More details about the deprecation will be posted here soon.
Hi Paul,I am still using v3Beta1, are you aware of when this version is going to be disabled?