Versions
Every version of your app on its Versions tab, newest first, with its log, Go back to this version and Preview this version.
Updated 27 Oct 20261 min read
Each time your app gets new code, it gets a new version: version 12, then 13. The app's Versions tab lists them all, newest first, 25 a page, with what changed, its branch and commit, how long it took and whether it's live.
Go back to an earlier version
Open your app, then its Versions tab.
Open the menu of the version you want and choose Go back to this version.
That version goes live again with no downtime. The app keeps two good versions ready, the live one and the one before it. See Deploying.
Preview a version
Choose Preview this version to run that version at an address of its own, for an hour to a day, without changing what your visitors see. It stops by itself. See Environments and previews.
No version yet
A new app shows No version yet: send it its code from its Overview, and its first version shows here.