First, if you have website on WordPress, try using these plugin which gonna help you with image compression. By using these plugin, your website time will be optimized and improve load time. For plugin settings and recommended options, visit the plugin website to avoid mistakes.
WordPress Image Compression Plugins
First, login to your cpanel account and look for an option “Optimize Website” in Software section.
Click to that option, you will see compression settings, disabled by default settings. Click to Compress All Content and update settings this will compress any website files. No need to check or test below option for specific compression. This will mix-up your website content.
Now check you page speed for desktop version or mobile version and see result.