We prove the result using Google PageSpeed Insights with before after report:
Will make the score around 80+
Could be around 90 depending on how well the site/theme is coded and structured.
=> Core WordPress Optimization.
=> Enabling Website Page Caching.
=> Enabling Browser Caching.
=> Enabling GZip Compression.
=> HTML, CSS & JS Minification.
=> Image Optimization, Scaling & Resizing
=> Minimizing number of total requests.
=> Database Caching
What we will need:
=> Website address
=> WordPress admin login details.
=> Hosting Control Panel/FTP access
=> CDN Login Details (Optional) (MaxCDN/Cloudflare/Amazon Cloudfront/etc.)