Website Favicon vs Icon of a Web App
Though icons for web apps (PWAs, store apps and browser extensions) are closely related with website favicons but those are different from each other in purpose and specs.
Do not confuse website favicons with app icons. I have noticed that in most online articles, the authors have mixed-up the app icons with browser favicons. Some articles have even wrongly confused website favicons with extension icons of browser. [RD]
Website favicons are different from web apps in different ways. For example, it is recommended that you should create multiple icons in different sizes and image formats for progressive web apps. However, your website must have only have one favicon to display it in Google search results. [RD]
You can consult our article about icon sizes for better clarity in difference between web app icon, extension icon and website favicon.
More Resources
What if Your Website Lacks a Favicon?
Favicon Design Ideas and Pro Tips.
Favicon Ideal Size – the Best Size for a Website Favicon.
Learn more Website Creation and Web Design Tips.
