Because paper is derived from plants, it is recyclable, therefore, Strong demand to replace plastic with paper wherever possible to reduce waste and CO2 emissions exists. However, one of the biggest drawbacks of paper is that its strength is greatly affected by humidity. So, coating is required for everything from cheap everyday paper products to expensive paper works of art, with the former raising problems such as increased production costs and the latter losing the paper's natural luster. In this study, we developed a new method to increase the strength of paper by infiltrating paper with a photocurable resin (PCR) solution containing dispersed cellulose nanofibers (CNFs). By adopting PCR, which cures instantly when exposed to ultraviolet light, production energy consumption and heat damage to paper can be reduced compared to conventional coatings. We investigated the effects of the weight fraction of the PCR solution and CNF dispersion on the elastic modulus and strength of paper. Furthermore, we evaluated the gloss of paper infiltrated with PCR and CNF, and found that dispersing CNF in the PCR solution can improve both the elastic modulus and tensile strength, and also suppress the gloss of the paper.