Adobe illustrator user guide. You can convert a png to a vector file in illustrator which makes it great for converting logos and shapes so they are scalable without losing quality.
image source https://www.seekpng.com/ks/adobe-illustrator-logo/
image source https://www.pngkey.com/detail/u2w7q8q8t4w7o0q8_i-made-the-logo-by-tracing-with-adobe/
image source http://jennycookies.com/instagram-black-outline-logo-png-font-typeface-square-android-icon-vector-png-eps-button-free-download-font-black-and-white-transparent-background-maker-ai-file-adobe-illustrator-for-tumblr1_1/
