We are trying to get a ferry schedule from Split to Hvar on May 30th. Could someone give me a website? Is Jadrolinija the only one? (We were trying to leave in the morning.) Thank you!

www.hvarinfo.com/hvar-ferries/#1

The main ferry route to Hvar island is to Stari Grad. On Jadrolinija's website (www.jadrolinija.hr), there are ferries from Split to Stari Grad on 30 May at 0600, 0900, 1430 and 2030. Buses and taxis wait on the quayside at Stari Grad to take people to Hvar town and other parts of the island.

Thank you both for your help. Geoff, I looked up this website again and found "local ferries" but I don't see the times you mentioned, just 14:00. What am I doing wrong? Thank you for your help.

This passenger only catamaran goes directly to Hvar and then to Korcula Town.
http://www.krilo.hr/raspored_en.htm

The sailing from Split at 1400 is a fast catamaran to Hvar, Vela Luka (Korcula) and Ubli (Lastovo).
To find the timetable for the ferries to Stari Grad on the English version of www.jadrolinija.hr, click on "Sailing schedule" then "Table - low season". You then get a list of all the routes. Under "District of Split" is the timetable for "Split - Stari Grad (Hvar)". There are four sailings a day, or three at weekends.