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PNG (Portable Network Graphics) ndi mtundu wazithunzi womwe umadziwika chifukwa cha kukanikizana kosataya komanso kuthandizira mawonekedwe owonekera. Mafayilo a PNG nthawi zambiri amagwiritsidwa ntchito popanga zithunzi, ma logo, ndi zithunzi pomwe kusunga m'mbali zakuthwa komanso kuwonekera ndikofunikira. Ndizoyenera bwino pazithunzi zapaintaneti komanso kapangidwe ka digito.