When you want to be Web Developer. you need to know how Speed Up your website
เว็บไซต์เช็คความเร็ว สามารถเช็คได้ที่ Gtmetrix,Google Page Speed,WebPageTest
เช็ค Global Latency https://latency.apex.sh/
https://www.performancebudget.io/
HTML Optimize
Javascript Minify
CSS
Minify
Remove Unused CSS
https://purifycss.online/
https://www.babelcoder.com/blog/posts/purify-css
Image
https://wordpress.org/plugins/responsify-wp/#description
https://alistapart.com/article/responsive-images-in-practice
https://www.keycdn.com/blog/responsive-images
https://varvy.com/pagespeed/defer-images.html
Webp https://developers.google.com/speed/webp