Once you have measured and evaluated your app's performance, you can apply some best practices and techniques to improve it. Code minification, compression, bundling, and caching can help reduce the size and number of files that your app needs to load and execute. Additionally, code analysis, linting, and debugging tools can identify and fix errors, bugs, and inefficiencies in your code. Image optimization, sprite sheets, icon fonts, and lazy loading can be used to reduce the size and number of images that your app needs to load and render. Web fonts, SVG, and responsive design can ensure that your app looks good and consistent on different devices and screen resolutions. Service workers, offline storage, and progressive web app features can make your app work offline and load faster on repeat visits. Network throttling, caching, and prefetching can reduce the network latency and bandwidth consumption of your app. Lastly, native plugins can access native features not available or performant in web views; however, they should be used sparingly as they can introduce performance overhead and compatibility issues. It is also important to test and update native plugins regularly with fallbacks or alternatives when possible.