Improves FID or First Input Delay (Interactivity)

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FID (First Interaction Latency) is a metric that measures how quickly users interact with your website.

That is, it measures the speed with which the elements of a page respond to the actions that the user carries out on it.

Some of the reasons why FID can be bad are:

JavaScript files are too large.
Blocking on long tasks.
Poor page interaction optimization.
Do not use a script to run in the background without blocking the page the user is on.
If you want to improve FID, you can implement some of the following tips:

Reduce the impact of external code. Make sure that there are not too many pakistan whatsapp number database processes happening at the same time to keep the page running smoothly.
Reduces JavaScript execution time by sending only the necessary code and removing non-essential code. A web developer can move JavaScript from the main thread to a secondary thread to improve code performance.
Minimize the load on the main thread. If the main thread is unable to handle all the load, you can reduce the complexity of your website's layouts or styles.
Keep transfer sizes small. Avoid transferring large files too frequently to prevent slow web responses.