Instructions
It will create a 48px and a 96px icon from the image you upload.
It will then give you the code to add to your manifest.json file.
"icons": {
"48": "icon48.png",
"96": "icon96.png"
},With our user-friendly interface, converting an icon for Firefox extension and Firefox web store is painless. Simply upload an icon and our generator will seamlessly convert it into the perfect set of icons for your Firefox extension.
Improve visibility of your extension on Firefox Web store by providing all needed sizes of icons. This is a simple growth hack for increasing visibility of your Firefox extension.
PNG is recommended as it supports transparency and it's a lossless format.
For best practices refer to Firefox extension icon guide
Supports PNG, JPG & WEBP up to any size