Custom Data Type for Image in Lightning Web Component

imageControl.css

.image
{
  height: 30px;
  width: 30px;
}

imageControl.html

<template>
    <img src={url} alt={altText} class="image"/>
</template>

imageControl.js

import { LightningElement,api } from 'lwc';

export default class ImageControl extends LightningElement {
    @api url;
    @api altText;
}