Upload as many memories (photos, stories, documents, and audio files) as you desire. Having more than 5,000 can cause slow performance.
Although FamilySearch does not have a limit to the number of items you can upload to Memories yet, if an account has more than 5,000 memories, the system can perform slowly. Having a large number of memories uploaded may result in longer loading times. If memories do not load, it does not mean they have been deleted from your Memories Gallery. Try searching for them on an individual ancestor's page instead.
Each person record has a limit of 1,000 memory tags (or links) in FamilySearch.
For information about what types of memories can be submitted, please see the FamilySearch Content Submission Agreement.