Use tools like RealFaviconGenerator to generate a plethora of icons in different sizes and formats. This ensures compatibility across various devices. - Source: dev.to / 7 months ago

II. Update your web app manifest.json file. You need to add some meta-data to your app to be installable such as name, description and corresponding icons to different mobile OS. You can use the following website to generate as the required assets to run PWA in mobile device: Https://realfavicongenerator.net/. - Source: dev.to / 9 months ago

3️⃣ RealFaviconGenerator 🔄 https://realfavicongenerator.net/ RealFaviconGenerator takes favicon generation to the next level. It automatically generates favicons for not only browsers but also for various platforms like Android, iOS, and even Windows. The website also checks for favicon compatibility issues and helps you fix any potential problems. - Source: dev.to / 11 months ago

Use this generator to create icons and the lines of code. https://realfavicongenerator.net/. Source: about 1 year ago

Favicon - You might want to use https://realfavicongenerator.net/ or something similar to make a favicon so you don't have the default globe favicon. Source: about 1 year ago

LibreSprite is a nice free one that's forked from Aseprite. Source: over 1 year ago

LibreSprite is an older version (a fork) that has downloads. Source: almost 2 years ago

I have also seen Aseprite being recommended. It looks nice and I'm sure it works well, but it is not open source unfortunately. There is an open source alternative called LibreSprite, which seems to mimic Aseprite quite closely. Source: over 2 years ago