Website performance optimisation encompasses various aspects, from front-end design to server configuration. There are many things you can do to optimise your website performance, including:
Use a fast web hosting provider: Your web hosting provider plays a big role in your website's speed. Choose a provider that offers reliable and fast hosting. eg AWS
Optimise your images: Images can be a major source of slow loading times. Make sure your images are optimised for the web by using the right format, size and using a image compression tool like TingPNG.
Minify and combine your CSS and JavaScript files: Minifying your code can remove unnecessary characters and whitespace, which can make your files smaller and faster to load. Combining your CSS and JavaScript files can also reduce the number of HTTP requests that your website needs to make.
Enable browser caching: Browser caching allows your browser to store frequently accessed files locally, so they don't need to be downloaded again every time you visit a page.
Use a content delivery network (CDN): A CDN can store your website's static content on servers around the world, which can help to improve loading times for users in different locations. eg Cloudflare
Optimise your database: A slow database can slow down your entire website. Make sure your database is properly optimized and indexed.