By posting photos, you agree to FamilySearch’s conditions.
Posting means you agree that you have the right to do so.
Photographs of living people should not be posted without prior consent.
Avoid posting photos that are duplicates or poor quality.
Read the guidelines on FamilySearch Memories for the kinds of items that can be uploaded (to avoid item rejection). Guidelines are found here. Also read this article.
As you see fit, exclude photos that are duplicates or near-duplicates, that are not well-taken or are damaged, etc.
If photos or other upload items are copyrighted, make sure you have permission from the copyright holder to distribute them. For additional information, read this article.