Closes #772: Changed webp to avif and slight modification to UI (#780)

views/part-settings-webp-missing-message.php

@@ -5,8 +5,8 @@
 		sprintf(
 		/* translators: %s is a formatted number (don’t use %d). */
 			_n(
-				'It seems that you have %s optimized image without WebP versions. You can generate it here.',
-				'It seems that you have %s optimized images without WebP versions. You can generate them here.',
+				'It seems that you have %s optimized image without Next-Gen versions. You can generate it here.',
+				'It seems that you have %s optimized images without Next-Gen versions. You can generate them here.',
 				$data['count'],
 				'imagify'
 			),

views/part-settings-webp.php

@@ -9,24 +9,31 @@
 $settings = Imagify_Settings::get_instance();
 ?>
 <div>
-	<h3 class="imagify-options-subtitle"><?php _e( 'WebP format', 'imagify' ); ?></h3>
+	<h3 class="imagify-options-subtitle"><?php _e( 'Next-Gen image format', 'imagify' ); ?></h3>
 
 	<div class="imagify-setting-line">
 		<?php
 		$settings->field_checkbox( [
-			'option_name' => 'convert_to_webp',
-			'label'       => __( 'Create WebP versions of images', 'imagify' ),
+			'option_name' => 'convert_to_avif',
+			'label'       => __( 'Create AVIF versions of images', 'imagify' ),
 			'attributes'  => [
-				'aria-describedby' => 'describe-convert_to_webp',
+				'aria-describedby' => 'describe-convert_to_avif',
 			],
 		] );
 		?>
+		<div class="imagify-info">
+			<span class="dashicons dashicons-info"></span>
+			<?php esc_html_e( 'Enabling this option will start the process of creating AVIF version of your images automatically.', 'imagify' ); ?>
+		</div>
+	</div>
+
+	<div class="imagify-setting-line">
 
 		<div class="imagify-options-line">
 			<?php
 			$settings->field_checkbox( [
 				'option_name' => 'display_webp',
-				'label'       => __( 'Display images in WebP format on the site', 'imagify' ),
+				'label'       => __( 'Display images in Next-Gen format on the site', 'imagify' ),
 			] );
 			?>