Just copy any paste the below html link and replace link with your link.
<a href="https://www.blogger.com/Link"><img src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjvxSSAR14_hebPfyRZcacFeGzBXGTbSskC9HZhnIEpFFyA60plBuMxot9QgxckhaVg4AhWiZq_TXrOzjy-YRjLON9p9u6_GsAjkcmuvdlI24OlXeugvG8SNNXpOCVEkbKhSoK0Hxc474c/s1600/download.bmp" /></a>
This is a simple download button.Comment me if you want to add image without upload on blogpost
