Most WordPress plugins shouldn’t run on all pages. For example during AJAX requests usually you need to enable only one plugin which serve the request.
With Shifty you can disable plugins on specific pages, or devices, for specific user roles or post types, etc.
With Shifty you can disable specific CSS or JS files to decrease bloat. You can reduce page size, and optimize JavaScript and CSS.
You can overwrite CSS/JS files separately for every page, post types, user roles, device, etc. Remove unused codes, or change anything you need.
You can inject arbitrary HTML code to any page. You can add extra CSS or JavaScript only on specific pages.
Preload important static files and improve Web Vital scores with Shifty. You can preload CSS, JS, images, video, audio and documents as well.