The page size for new databases can now be set in the database URL using ;PAGE_SIZE=512.

h2/src/main/org/h2/command/Parser.java

@@ -4222,6 +4222,10 @@ public class Parser {
             readIfEqualOrTo();
             read();
             return new NoOperation(session);
+        } else if (readIf("PAGE_SIZE")) {
+            readIfEqualOrTo();
+            read();
+            return new NoOperation(session);
         } else if (readIf("RECOVER")) {
             readIfEqualOrTo();
             read();