In this paper, a study on the possibility of forming edible films of hydrocolloid material (chitosan) in carob flour extract was performed, with the aim of forming protective films of improved properties. Carob is traditionally used in human consumption while carob seed flour (E 410) is used in the food industry as a thickener and product stabilizer. Carob extracts were prepared with three commercially available carob powders and powder obtained by grinding carob from the island of Korčula in solutions of 80% ethanol, 70% acetone and distilled water. The pH value and the amount of total sugars were determined with the prepared carob extracts, after which the preparation of chitosan solutions with carob extracts with the addition of acetic acid and glycerol was started. Apparent viscosity was measured with chitosan solutions with carob extract. Preparation of films was performed by pouring and drying the resulting solutions. The best elastic properties as well as the smallest changes in thickness were shown by the chitosan film obtained from carob powder extract produced in Italy in distilled water.