diff --git a/functions-images.php b/functions-images.php
index 15bd84c..79b77fc 100644
--- a/functions-images.php
+++ b/functions-images.php
@@ -160,7 +160,7 @@ function get_timber_image_description( $timber_image ) {
  * @param string                        $size         Size key of the image to return the
  *                                                    attributes for.
  * @param array                         $args         Optional. Array of options. See
- *                                                    get_timber_image_responsive() for possible
+ *                                                    get_timber_image_responsive_src() for possible
  *                                                    options.
  *
  * @return bool|array An associative array of HTML attributes. False if image can’t be found.
@@ -194,6 +194,9 @@ function get_timber_image_attributes_responsive( $timber_image, $size, $args = a
  *
  * @param int|\Timber\Image $timber_image Instance of Timber\Image or Attachment ID.
  * @param string|array      $size         Timmy image size.
+ * @param array             $args         Optional. Array of options. See
+ *                                        get_timber_image_responsive_src() for possible
+ *                                        options.
  *
  * @return false|string
  */
diff --git a/lib/Image.php b/lib/Image.php
index d9a5d85..847d9e9 100644
--- a/lib/Image.php
+++ b/lib/Image.php
@@ -211,7 +211,10 @@ public function picture_responsive( $args = [] ) {
 		 * Default arguments for image markup.
 		 */
 		$default_args = [
-			'loading' => 'lazy',
+			'loading'     => 'lazy',
+			'lazy_srcset' => false,
+			'lazy_src'    => false,
+			'lazy_sizes'  => false,
 		];
 
 		$args = wp_parse_args( $args, $default_args );
@@ -232,14 +235,16 @@ public function picture_responsive( $args = [] ) {
 				'type' => 'image/webp',
 			];
 
-			$source_attributes = array_merge( $source_attributes, $this->responsive_attributes( [
-				'attr_width'  => false,
-				'attr_height' => false,
-				'src_default' => false,
-				'loading'     => false,
-				'webp'        => true,
-				'is_source'   => true,
-			] ) );
+			$source_attributes = array_merge( $source_attributes, $this->responsive_attributes(
+				array_merge( $args, [
+					'attr_width'  => false,
+					'attr_height' => false,
+					'src_default' => false,
+					'loading'     => false,
+					'webp'        => true,
+					'is_source'   => true,
+				] )
+			) );
 
 			$html .= '<source' . Helper::get_attribute_html( $source_attributes ) . '>' . PHP_EOL;
 		}
@@ -248,14 +253,16 @@ public function picture_responsive( $args = [] ) {
 			'type' => $mime_type,
 		];
 
-		$source_attributes = array_merge( $source_attributes, $this->responsive_attributes( [
-			'attr_width'  => false,
-			'attr_height' => false,
-			'src_default' => false,
-			'loading'     => false,
-			'webp'        => false,
-			'is_source'   => true,
-		] ) );
+		$source_attributes = array_merge( $source_attributes, $this->responsive_attributes(
+			array_merge( $args, [
+				'attr_width'  => false,
+				'attr_height' => false,
+				'src_default' => false,
+				'loading'     => false,
+				'webp'        => false,
+				'is_source'   => true,
+			] )
+		) );
 
 		$html .= '<source' . Helper::get_attribute_html( $source_attributes ) . '>' . PHP_EOL;
 
@@ -283,6 +290,8 @@ public function picture_fallback_image( $args = [] ) {
 			'loading' => $this->loading( $args['loading'] ),
 		];
 
+		$fallback_attributes = $this->add_data_attributes( $fallback_attributes, $args );
+
 		return '<img' . Helper::get_attribute_html( $fallback_attributes ) . '>';
 	}
 
@@ -774,9 +783,35 @@ public function responsive_attributes( $args = [] ) {
 		// Lazy-loading.
 		$attributes['loading'] = $this->loading( $args['loading'] );
 
-		/**
-		 * Maybe rename attributes with "data-" prefixes.
-		 */
+		// Maybe update attributes with "data-" prefixes.
+		$attributes = $this->add_data_attributes( $attributes, $args );
+
+		// Maybe rename src attribute to srcset
+		if ( $args['is_source'] && ! empty( $attributes['src'] ) ) {
+			$attributes['srcset'] = $attributes['src'];
+			unset( $attributes['src'] );
+		}
+
+		// Remove any falsy attributes.
+		$attributes = array_filter( $attributes );
+
+		return $attributes;
+	}
+
+	/**
+	 * Adds "data-" attributes for usage with JavaScript lazy loading libraries.
+	 *
+	 * @param array $args       Args.
+	 * @param array $attributes Updated attributes.
+	 *
+	 * @return mixed
+	 */
+	protected function add_data_attributes( array $attributes, array $args ) {
+		$args = wp_parse_args( $args, [
+			'lazy_srcset' => false,
+			'lazy_src'    => false,
+			'lazy_sizes'  => false,
+		] );
 
 		if ( $args['lazy_srcset'] && ! empty( $attributes['srcset'] ) ) {
 			$attributes['data-srcset'] = $attributes['srcset'];
@@ -793,15 +828,6 @@ public function responsive_attributes( $args = [] ) {
 			unset( $attributes['sizes'] );
 		}
 
-		// Maybe rename src attribute to srcset
-		if ( $args['is_source'] && ! empty( $attributes['src'] ) ) {
-			$attributes['srcset'] = $attributes['src'];
-			unset( $attributes['src'] );
-		}
-
-		// Remove any falsy attributes.
-		$attributes = array_filter( $attributes );
-
 		return $attributes;
 	}
 
diff --git a/tests/test-picture.php b/tests/test-picture.php
index fa46cdd..8a2175b 100644
--- a/tests/test-picture.php
+++ b/tests/test-picture.php
@@ -11,8 +11,11 @@ public function test_picture() {
 		] );
 		$result     = get_timber_picture_responsive( $attachment, 'picture' );
 
-		$expected =  '<source srcset="' . $this->get_upload_url() . '/test-560x0-c-default.jpg 560w, ' . $this->get_upload_url() . '/test-1400x0-c-default.jpg 1400w" sizes="100vw">' . PHP_EOL .
-		'<img src="' . $this->get_upload_url() . '/test-1400x0-c-default.jpg" width="1400" height="933" alt="Burrito Wrap" loading="lazy">';
+		$expected = sprintf(
+			'<source srcset="%1$s/test-560x0-c-default.jpg 560w, %1$s/test-1400x0-c-default.jpg 1400w" sizes="100vw">%2$s<img src="%1$s/test-1400x0-c-default.jpg" width="1400" height="933" alt="Burrito Wrap" loading="lazy">',
+			$this->get_upload_url(),
+			PHP_EOL
+		);
 
 		$this->assertEquals( $expected, $result );
 	}
@@ -21,8 +24,11 @@ public function test_picture_loading_false() {
 		$attachment = $this->create_image();
 		$result     = get_timber_picture_responsive( $attachment, 'picture', [ 'loading' => false ] );
 
-		$expected =  '<source srcset="' . $this->get_upload_url() . '/test-560x0-c-default.jpg 560w, ' . $this->get_upload_url() . '/test-1400x0-c-default.jpg 1400w" sizes="100vw">' . PHP_EOL .
-		'<img src="' . $this->get_upload_url() . '/test-1400x0-c-default.jpg" width="1400" height="933" alt="">';
+		$expected = sprintf(
+			'<source srcset="%1$s/test-560x0-c-default.jpg 560w, %1$s/test-1400x0-c-default.jpg 1400w" sizes="100vw">%2$s<img src="%1$s/test-1400x0-c-default.jpg" width="1400" height="933" alt="">',
+			$this->get_upload_url(),
+			PHP_EOL
+		);
 
 		$this->assertEquals( $expected, $result );
 	}
@@ -33,8 +39,33 @@ public function test_picture_loading_false_timmy_image() {
 		$image  = Timmy::get_image( $attachment->ID, 'picture' );
 		$result = $image->picture_responsive( [ 'loading' => false ] );
 
-		$expected =  '<source srcset="' . $this->get_upload_url() . '/test-560x0-c-default.jpg 560w, ' . $this->get_upload_url() . '/test-1400x0-c-default.jpg 1400w" sizes="100vw">' . PHP_EOL .
-		'<img src="' . $this->get_upload_url() . '/test-1400x0-c-default.jpg" width="1400" height="933" alt="">';
+		$expected = sprintf(
+			'<source srcset="%1$s/test-560x0-c-default.jpg 560w, %1$s/test-1400x0-c-default.jpg 1400w" sizes="100vw">%2$s<img src="%1$s/test-1400x0-c-default.jpg" width="1400" height="933" alt="">',
+			$this->get_upload_url(),
+			PHP_EOL
+		);
+
+		$this->assertEquals( $expected, $result );
+	}
+
+	public function test_picture_with_lazy_attributes() {
+		$alt_text   = 'Burrito Wrap';
+		$attachment = $this->create_image( [
+			'alt'         => $alt_text,
+			'description' => 'Burritolino',
+		] );
+
+		$result = get_timber_picture_responsive( $attachment, 'picture', [
+			'lazy_srcset' => true,
+			'lazy_src'    => true,
+			'lazy_sizes'  => true,
+		] );
+
+		$expected = sprintf(
+			'<source data-srcset="%1$s/test-560x0-c-default.jpg 560w, %1$s/test-1400x0-c-default.jpg 1400w" data-sizes="100vw">%2$s<img width="1400" height="933" alt="Burrito Wrap" loading="lazy" data-src="%1$s/test-1400x0-c-default.jpg">',
+			$this->get_upload_url(),
+			PHP_EOL
+		);
 
 		$this->assertEquals( $expected, $result );
 	}
diff --git a/tests/test-webp.php b/tests/test-webp.php
index 91f2770..203a59f 100644
--- a/tests/test-webp.php
+++ b/tests/test-webp.php
@@ -31,7 +31,32 @@ public function test_picture_webp() {
 		] );
 		$result     = get_timber_picture_responsive( $attachment, 'picture-webp' );
 
-		$expected = '<source type="image/webp" srcset="' . $this->get_upload_url() . '/test-560x0-c-default.webp 560w, ' . $this->get_upload_url() . '/test-1400x0-c-default.webp 1400w" sizes="100vw">' . PHP_EOL . '<source type="image/jpeg" srcset="' . $this->get_upload_url() . '/test-560x0-c-default.jpg 560w, ' . $this->get_upload_url() . '/test-1400x0-c-default.jpg 1400w" sizes="100vw">' . PHP_EOL .  '<img src="' . $this->get_upload_url() . '/test-1400x0-c-default.jpg" width="1400" height="933" alt="Burrito Wrap" loading="lazy">';
+		$expected = sprintf(
+			'<source type="image/webp" srcset="%1$s/test-560x0-c-default.webp 560w, %1$s/test-1400x0-c-default.webp 1400w" sizes="100vw">%2$s<source type="image/jpeg" srcset="%1$s/test-560x0-c-default.jpg 560w, %1$s/test-1400x0-c-default.jpg 1400w" sizes="100vw">%2$s<img src="%1$s/test-1400x0-c-default.jpg" width="1400" height="933" alt="Burrito Wrap" loading="lazy">',
+			$this->get_upload_url(),
+			PHP_EOL
+		);
+
+		$this->assertEquals( $expected, $result );
+	}
+
+	public function test_picture_webp_with_lazy_attributes() {
+		$alt_text   = 'Burrito Wrap';
+		$attachment = $this->create_image( [
+			'alt'         => $alt_text,
+			'description' => 'Burritolino',
+		] );
+		$result     = get_timber_picture_responsive( $attachment, 'picture-webp', [
+			'lazy_srcset' => true,
+			'lazy_src'    => true,
+			'lazy_sizes'  => true,
+		] );
+
+		$expected = sprintf(
+			'<source type="image/webp" data-srcset="%1$s/test-560x0-c-default.webp 560w, %1$s/test-1400x0-c-default.webp 1400w" data-sizes="100vw">%2$s<source type="image/jpeg" data-srcset="%1$s/test-560x0-c-default.jpg 560w, %1$s/test-1400x0-c-default.jpg 1400w" data-sizes="100vw">%2$s<img width="1400" height="933" alt="Burrito Wrap" loading="lazy" data-src="%1$s/test-1400x0-c-default.jpg">',
+			$this->get_upload_url(),
+			PHP_EOL
+		);
 
 		$this->assertEquals( $expected, $result );
 	}
@@ -42,7 +67,11 @@ public function test_picture_webp_with_small_image() {
 		] );
 		$result     = get_timber_picture_responsive( $attachment, 'picture-webp-with-small-image' );
 
-		$expected = '<source type="image/webp" srcset="' . $this->get_upload_url() . '/test-200px-200x0-c-default.webp">' . PHP_EOL . '<source type="image/jpeg" srcset="' . $this->get_upload_url() . '/test-200px-200x0-c-default.jpg">' . PHP_EOL . '<img src="' . $this->get_upload_url() . '/test-200px-200x0-c-default.jpg" width="200" height="133" alt="" loading="lazy">';
+		$expected = sprintf(
+			'<source type="image/webp" srcset="%1$s/test-200px-200x0-c-default.webp">%2$s<source type="image/jpeg" srcset="%1$s/test-200px-200x0-c-default.jpg">%2$s<img src="%1$s/test-200px-200x0-c-default.jpg" width="200" height="133" alt="" loading="lazy">',
+			$this->get_upload_url(),
+			PHP_EOL
+		);
 
 		$this->assertEquals( $expected, $result );
 	}
@@ -53,7 +82,11 @@ public function test_picture_webp_with_small_image_square() {
 		] );
 		$result     = get_timber_picture_responsive( $attachment, 'picture-webp-resize-square' );
 
-		$expected = '<source type="image/webp" srcset="' . $this->get_upload_url() . '/test-200px-133x133-c-default.webp">' . PHP_EOL . '<source type="image/jpeg" srcset="' . $this->get_upload_url() . '/test-200px-133x133-c-default.jpg">' . PHP_EOL .  '<img src="' . $this->get_upload_url() . '/test-200px-133x133-c-default.jpg" width="133" height="133" alt="" loading="lazy">';
+		$expected = sprintf(
+			'<source type="image/webp" srcset="%1$s/test-200px-133x133-c-default.webp">%2$s<source type="image/jpeg" srcset="%1$s/test-200px-133x133-c-default.jpg">%2$s<img src="%1$s/test-200px-133x133-c-default.jpg" width="133" height="133" alt="" loading="lazy">',
+			$this->get_upload_url(),
+			PHP_EOL
+		);
 
 		$this->assertEquals( $expected, $result );
 	}
@@ -66,7 +99,11 @@ public function test_picture_webp_args_array_with_srcset_descriptors() {
 			'webp'   => true,
 		] );
 
-		$expected = '<source type="image/webp" srcset="' . $this->get_upload_url() . '/test-260x0-c-default.webp 1x, ' . $this->get_upload_url() . '/test-520x0-c-default.webp 2x">' . PHP_EOL . '<source type="image/jpeg" srcset="' . $this->get_upload_url() . '/test-260x0-c-default.jpg 1x, ' . $this->get_upload_url() . '/test-520x0-c-default.jpg 2x">' . PHP_EOL . '<img src="' . $this->get_upload_url() . '/test-260x0-c-default.jpg" width="260" height="173" alt="" loading="lazy">';
+		$expected = sprintf(
+			'<source type="image/webp" srcset="%1$s/test-260x0-c-default.webp 1x, %1$s/test-520x0-c-default.webp 2x">%2$s<source type="image/jpeg" srcset="%1$s/test-260x0-c-default.jpg 1x, %1$s/test-520x0-c-default.jpg 2x">%2$s<img src="%1$s/test-260x0-c-default.jpg" width="260" height="173" alt="" loading="lazy">',
+			$this->get_upload_url(),
+			PHP_EOL
+		);
 
 		$this->assertEquals( $expected, $result );
 	}
@@ -81,7 +118,11 @@ public function test_picture_webp_args_array_with_srcset_descriptors_timmy_image
 
 		$result = $image->picture_responsive();
 
-		$expected = '<source type="image/webp" srcset="' . $this->get_upload_url() . '/test-260x0-c-default.webp 1x, ' . $this->get_upload_url() . '/test-520x0-c-default.webp 2x">' . PHP_EOL . '<source type="image/jpeg" srcset="' . $this->get_upload_url() . '/test-260x0-c-default.jpg 1x, ' . $this->get_upload_url() . '/test-520x0-c-default.jpg 2x">' . PHP_EOL . '<img src="' . $this->get_upload_url() . '/test-260x0-c-default.jpg" width="260" height="173" alt="" loading="lazy">';
+		$expected = sprintf(
+			'<source type="image/webp" srcset="%1$s/test-260x0-c-default.webp 1x, %1$s/test-520x0-c-default.webp 2x">%2$s<source type="image/jpeg" srcset="%1$s/test-260x0-c-default.jpg 1x, %1$s/test-520x0-c-default.jpg 2x">%2$s<img src="%1$s/test-260x0-c-default.jpg" width="260" height="173" alt="" loading="lazy">',
+			$this->get_upload_url(),
+			PHP_EOL
+		);
 
 		$this->assertEquals( $expected, $result );
 	}