Use appropriate image size – when adding images to your web page, they must have the appropriate size because large-sized images could slow down website speed.
Use Compression Tools – there are many compression software that is available on the Internet today which you can use in compressing large files. This can help you save bytes and improve pagespeed insights.
Use a minifier tool for HTML, CSS, and JavaScript – this is helpful in optimizing a website and increasing page speed. To do this you can use a specialized tool to minify HTML, CSS, and JavaScript codes, it is the fastest way to remove unnecessary characters such as commas and spaces in the script. After minifying code, go for page speed test so you may get idea how effective is HTML and CSS minifying.
Use a Leverage Browser Caching Browser – it can help create a cache for a bunch of information, so the browser doesn’t have to reload the whole page whenever a user returns to that particular web page.