A contents information processing program for executing steps on computing means provided at a contents server configured to be information-transmittably and information-receivably connected to an operation terminal configured to operate a print label producing apparatus that comprises feeding means configured to feed a print-receiving medium and printing means configured to perform desired printing on said print-receiving medium fed out from said feeding means, to form said desired printing on said print-receiving medium, and to produce a print label, said steps comprising: an explanatory text acquisition step for acquiring explanatory text (W, W1-W4) associated in a fixed manner in advance with specific templates (FT, BT, NT, NT') selected from a plurality of templates (FT, BT, NT, NT') prepared in advance for the production of said print label; a keyword acquisition step for acquiring at least one keyword associated in advance with each of a plurality of preview images (P, Pa-Pc) prepared in advance in a manner displayable on display means of said operation terminal; an image determining step for determining for each preview image (P, Pa-Pc) a compatibility between corresponding said at least one keyword and details of the explanatory text (W, W1-W4) acquired in said explanatory text acquisition step, and determining an image of said plurality of preview images (P, Pa-Pc) that has a highest compatibility as a preview image (P, Pa-Pc) to be associated with said specific templates (FT, BT, NT, NT'); and an image output step for outputting the preview image (P, Pa-Pc) determined in said image determining step to said operation terminal for display on said display means; said program further executes on said computing means of said contents server an update determining step for determining whether or not at least one of said plurality of templates (FT, BT, NT, NT') has been updated or whether or not at least one of said plurality of preview images (P, Pa-Pc) has been updated, and wherein: at least said explanatory text acquisition step, said keyword acquisition step, and said image determining step are executed by said computing means of said contents server when an occurrence of an update is determined in said update determining step. an explanatory text acquisition step for acquiring explanatory text (W, W1-W4) associated in a fixed manner in advance with specific templates (FT, BT, NT, NT') selected from a plurality of templates (FT, BT, NT, NT') prepared in advance for the production of said print label; a keyword acquisition step for acquiring at least one keyword associated in advance with each of a plurality of preview images (P, Pa-Pc) prepared in advance in a manner displayable on display means of said operation terminal; an image determining step for determining for each preview image (P, Pa-Pc) a compatibility between corresponding said at least one keyword and details of the explanatory text (W, W1-W4) acquired in said explanatory text acquisition step, and determining an image of said plurality of preview images (P, Pa-Pc) that has a highest compatibility as a preview image (P, Pa-Pc) to be associated with said specific templates (FT, BT, NT, NT'); and an image output step for outputting the preview image (P, Pa-Pc) determined in said image determining step to said operation terminal for display on said display means; said program further executes on said computing means of said contents server an update determining step for determining whether or not at least one of said plurality of templates (FT, BT, NT, NT') has been updated or whether or not at least one of said plurality of preview images (P, Pa-Pc) has been updated, and wherein: at least said explanatory text acquisition step, said keyword acquisition step, and said image determining step are executed by said computing means of said contents server when an occurrence of an update is determined in said update determining step. at least said explanatory text acquisition step, said keyword acquisition step, and said image determining step are executed by said computing means of said contents server when an occurrence of an update is determined in said update determining step.