This study aimed to evaluate the effect of plasticizer type (glycerol, sorbitol and fructose) and concentration (5, 7.5 and 10 % w/w) on pullulan films’ thickness, moisture content (MC), tensile strength (TS), elongation at break (EAB), folding endurance (FE), water vapor permeability (WVP), oxygen permeability (O2P), oil resistance (OiR), ultra violet and visible light transmittance (Tr280 and Tr660), disintegration time (DT), weight loss (WL), microstructure and thermal properties. A 3-factor 3-level full factorial design of experiments was used to develop films through solution casting method. Maximum thickness, MC, EAB, FE, WVP, O2P, Tr280, Tr660, and WL were achieved using glycerol followed by sorbitol and fructose, while maximum TS, homogeneity and glass transition temperature (Tg) were achieved using fructose followed by sorbitol and glycerol at same concentrations. Increasing plasticizers’ concentration from 5 % to 10 % w/w resulted in the reduction of TS, homogeneity and Tg, and elevation of thickness, EAB, FE, MC, WVP, O2P, Tr280, Tr660 and WL (p < 0.05). Neither the type nor the concentration of plasticizer affected OiR and DT significantly. Sorbitol at 7.5 % w/w was the most suitable choice for producing pullulan-based films with oil impermeability, homogeneity, Tg of 208 °C, high TS (29.83 ± 1.01 MPa), EAB (18.32 % ± 0.32), FE (37 ± 3), Tr660 (58.04 % ± 1.21) and WL (45.44 % ± 0.43), and low DT (51.36 ± 0.05 s), MC (18.13 % ± 0.26), WVP (1.18 ± 0.13 (g/m.s.Pa)× 10−10), O2P (peroxide value (PV) = 14.86 ± 0.15 meq/kg), Tr280 (37.19 % ± 0.14) and thickness (0.043 ± 0.009 mm).

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