Top 10 Primary hot on page optimization technique for 2018 & 2019:

Add proper title & Meta tags (Appropriate keywords should be available in Meta Tags)- Use long tail keywords
Image Optimization
Add Minimum 350 words in the web page - Use high-quality content
Add Keywords in web page content
Website speed should be below 5 seconds (Use JS & CSS minifier to increase website speed)
Heading Tag Optimization
URL Structure - SEO Friendly URL
Internal Linking
Responsive Website design
Social Media Sharing button is important