Or should you use Julian's Lloyds ScrollReveal.js on your blog? ScrollReveal.js WordPress Plugin is the best choice.

ScrollReveal.js Effects Plugin is result of Master's Thesis from Tomas Bata University developed by student Jan Benedík. Plugin alows

• using scroll reveal effects without knowledge of any syntax.
• manage used effect in your project.
• configure behavior of ScrollReveal.js

For more details see Julian's Lloyds ScrollReveal.js or plugin docs at WordPress.org.