Keep all your drafts in one Drive file – you can revert to earlier versions
Save and restore recent versions
You can download and keep previous copies of PDF files, images, and other files stored in Google Drive.
On your computer, go to drive.google.com.
Click the file you want to download.
At the top right, click More Manage versions.
Next to the version you want to download, click More.
To save a copy to your computer, click Download.
Upload a new version
On your computer, go to drive.google.com.
Click the file you want to replace.
At the top right, click More Manage versions Upload a new version.
Tip: If you upload a new version of a file owned by someone else, the original owner remains the same.
Delete a previous version
On your computer, go to drive.google.com.
Click on the file you want to replace.
At the top right, click More Manage versions.
Next to the version you want to delete, click More Delete.