Why the width of current pulses through the rectifier diode becomes less when a capacitor is connected across the load?

When a capacitor is connected across the load in a rectifier circuit, it acts as a reservoir of charge, smoothing out the voltage fluctuations. This capacitive smoothing reduces the rate at which the diode turns on and off, effectively shortening the width of the current pulses through the diode. As the capacitor charges, it provides a more continuous current to the load, leading to narrower current pulses compared to a circuit without a capacitor. Consequently, the overall ripple in the output voltage decreases, resulting in more stable operation.