DemoFileInputValidation.vue

<script setup>
const rules = [fileList => !fileList || !fileList.length || fileList[0].size < 1000000 || 'Avatar size should be less than 1 MB!']
</script>

<template>
  <VFileInput
    :rules="rules"
    label="Avatar"
    accept="image/png, image/jpeg, image/bmp"
    placeholder="Pick an avatar"
    prepend-icon="ri-camera-2-line"
  />
</template>