SharePoint Site developed with SharePoint Designer can it use for Sharepoint online ?

[Alice47]

If I have existing SharePoint site which developed using SharePoint Designer can it be use for SharePoint Online ? and how i can find any reference


Thank for the advice 

[#2]

@Alice47 With the little information, I believe you are in need of SharePoint Migration Tools (SPMT).
Since you are new at this, these links will help you -
https://docs.microsoft.com/en-us/sharepointmigration/introducing-the-sharepoint-migration-tool 

https://docs.microsoft.com/en-us/sharepointmigration/how-to-use-the-sharepoint-migration-tool 

https://docs.microsoft.com/en-us/sharepointmigration/migrate-to-sharepoint-online#migrate-sharepoint...

Hope this helps.