Here are the tips to improve Page Load Time of Blogger Blog:
1) Minimize Number of Posts on Home Page: Blogger provides a option to set the number of posts you want to serve on homepage. You can set the number of posts by editing the Blog posts gadget under layout option. For more refer to screenshot below:
Ideally, Choose 5-7 posts on homepage, So it will not affect your readership as well.
In addition, always use jump breaks after first paragraph in every post of blogger, so the homepage doesn’t need to load the whole post.
2) Images and Media: Don’t add too many images or videos in an article until and unless they are important. Always convert or reduce the pixel quality of an image to its minimum, So that it will not affect your page load time. Apart from this, Always use .png (Portable Network Graphics) format images.
4) Cascading style sheets: If you are using style sheets (CSS) for designing purpose, than make sure you put all the style sheet elements at the top of the template document.
Once you applied all the above pageload speed up tips, you will see an unbelievable change in page load time of your blog. To check your improved page load time you can use Google PageSpeed Insights tool.