JPG, PNG and BMP are popular extensions for picture files however if you want to create an icon image or a favicon for your blogs and website then you would need a .ico extension. There are many picture editing softwares that can be used to do this, however not all those popular softwares are free, actually very few you would find for free. So, for making it simple we will be using ms paint which is available as a default program in every version of the windows.
Open your ms paint which is located in the start menu – all programs – accessories – paint. Click on paint and once it opened, browse to find the picture you want to convert in an icon file. Icons are usually small, say 16 pixel square so you perhaps want to re-size the picture to that size. The ms paint that comes with windows7 has a great built in image re-sizer which am using actively these days. Once the image is resized, go to save as option. Next you would need to name the image, so select the image extension from the drop down as 24 bit BMP and name the image as anyname.ico and paint will save the image as an icon file.
That’s all, it’s done, you have an icon file ready, or perhaps a favicon that needs to be uploaded at the root of your website to work properly. Make sure to rename the image to favicon before you upload it.