diff --git a/backport-changelog/7.1/TODO.md b/backport-changelog/7.1/TODO.md
new file mode 100644
index 00000000000000..bd6ca721e6248b
--- /dev/null
+++ b/backport-changelog/7.1/TODO.md
@@ -0,0 +1,3 @@
+https://github.com/WordPress/wordpress-develop/pull/TODO
+
+* https://github.com/WordPress/gutenberg/pull/75550
diff --git a/lib/compat/wordpress-7.1/class-gutenberg-icons-registry-7-1.php b/lib/compat/wordpress-7.1/class-gutenberg-icons-registry-7-1.php
index e827056064e7b1..48a4ccb6abd9ad 100644
--- a/lib/compat/wordpress-7.1/class-gutenberg-icons-registry-7-1.php
+++ b/lib/compat/wordpress-7.1/class-gutenberg-icons-registry-7-1.php
@@ -50,6 +50,671 @@ protected function __construct() {
 		}
 	}
 
+	/**
+	 * Sanitizes the icon SVG content.
+	 *
+	 * Uses WP_HTML_Processor to extract the SVG element in its entirety before
+	 * applying wp_kses. This avoids issues where HTML tags like <p> inside the
+	 * content would terminate the SVG element when parsed as HTML, and ensures
+	 * proper handling of SVG structure including self-closing tags.
+	 *
+	 * @param string $icon_content The icon SVG content to sanitize.
+	 * @return string The sanitized icon SVG content.
+	 */
+	protected function sanitize_icon_content( $icon_content ) {
+		// Core attributes applicable to most elements.
+		$core_attributes = array(
+			'id'    => true,
+			'class' => true,
+			'style' => true,
+		);
+
+		// ARIA and accessibility attributes.
+		$aria_attributes = array(
+			'aria-hidden'      => true,
+			'aria-label'       => true,
+			'aria-labelledby'  => true,
+			'aria-describedby' => true,
+			'role'             => true,
+			'focusable'        => true,
+			'tabindex'         => true,
+		);
+
+		// Presentation attributes for graphics elements (shapes, text, use, image).
+		$presentation_attributes = array(
+			'fill'                => true,
+			'fill-opacity'        => true,
+			'fill-rule'           => true,
+			'stroke'              => true,
+			'stroke-width'        => true,
+			'stroke-linecap'      => true,
+			'stroke-linejoin'     => true,
+			'stroke-miterlimit'   => true,
+			'stroke-dasharray'    => true,
+			'stroke-dashoffset'   => true,
+			'stroke-opacity'      => true,
+			'opacity'             => true,
+			'transform'           => true,
+			'clip-path'           => true,
+			'clip-rule'           => true,
+			'mask'                => true,
+			'filter'              => true,
+			'visibility'          => true,
+			'display'             => true,
+			'color'               => true,
+			'color-interpolation' => true,
+			'color-rendering'     => true,
+			'vector-effect'       => true,
+			'paint-order'         => true,
+		);
+
+		// Marker attributes (only for shape elements).
+		$marker_attributes = array(
+			'marker-start' => true,
+			'marker-mid'   => true,
+			'marker-end'   => true,
+		);
+
+		// Container attributes for grouping elements.
+		$container_attributes = array(
+			'transform'  => true,
+			'clip-path'  => true,
+			'mask'       => true,
+			'filter'     => true,
+			'visibility' => true,
+			'display'    => true,
+			'opacity'    => true,
+		);
+
+		/*
+		 * Allowed tags for wp_kses(). WP_HTML_Processor::normalize() with
+		 * constraints (similar structure to this array) is proposed to improve
+		 * HTML/SVG sanitization in the future.
+		 *
+		 * @see https://github.com/dmsnell/wordpress-develop/pull/20
+		 */
+		$allowed_tags = array(
+			// Root SVG element.
+			'svg'                 => array_merge(
+				$core_attributes,
+				$aria_attributes,
+				$presentation_attributes,
+				array(
+					'xmlns'               => true,
+					'xmlns:xlink'         => true,
+					'width'               => true,
+					'height'              => true,
+					'viewbox'             => true,
+					'preserveaspectratio' => true,
+					'x'                   => true,
+					'y'                   => true,
+				)
+			),
+			// Basic shape elements (with markers).
+			'path'                => array_merge(
+				$core_attributes,
+				$aria_attributes,
+				$presentation_attributes,
+				$marker_attributes,
+				array(
+					'd'          => true,
+					'pathlength' => true,
+				)
+			),
+			'circle'              => array_merge(
+				$core_attributes,
+				$aria_attributes,
+				$presentation_attributes,
+				$marker_attributes,
+				array(
+					'cx' => true,
+					'cy' => true,
+					'r'  => true,
+				)
+			),
+			'ellipse'             => array_merge(
+				$core_attributes,
+				$aria_attributes,
+				$presentation_attributes,
+				$marker_attributes,
+				array(
+					'cx' => true,
+					'cy' => true,
+					'rx' => true,
+					'ry' => true,
+				)
+			),
+			'line'                => array_merge(
+				$core_attributes,
+				$aria_attributes,
+				$presentation_attributes,
+				$marker_attributes,
+				array(
+					'x1' => true,
+					'x2' => true,
+					'y1' => true,
+					'y2' => true,
+				)
+			),
+			'polygon'             => array_merge(
+				$core_attributes,
+				$aria_attributes,
+				$presentation_attributes,
+				$marker_attributes,
+				array(
+					'points' => true,
+				)
+			),
+			'polyline'            => array_merge(
+				$core_attributes,
+				$aria_attributes,
+				$presentation_attributes,
+				$marker_attributes,
+				array(
+					'points' => true,
+				)
+			),
+			'rect'                => array_merge(
+				$core_attributes,
+				$aria_attributes,
+				$presentation_attributes,
+				$marker_attributes,
+				array(
+					'x'      => true,
+					'y'      => true,
+					'width'  => true,
+					'height' => true,
+					'rx'     => true,
+					'ry'     => true,
+				)
+			),
+			// Grouping and structural elements.
+			'g'                   => array_merge(
+				$core_attributes,
+				$aria_attributes,
+				$container_attributes
+			),
+			'defs'                => $core_attributes,
+			'view'                => array_merge(
+				$core_attributes,
+				array(
+					'viewbox'             => true,
+					'preserveaspectratio' => true,
+					'zoomandpan'          => true,
+					'viewtarget'          => true,
+				)
+			),
+			'symbol'              => array_merge(
+				$core_attributes,
+				$aria_attributes,
+				$container_attributes,
+				array(
+					'viewbox'             => true,
+					'preserveaspectratio' => true,
+					'x'                   => true,
+					'y'                   => true,
+					'width'               => true,
+					'height'              => true,
+				)
+			),
+			'use'                 => array_merge(
+				$core_attributes,
+				$aria_attributes,
+				$presentation_attributes,
+				array(
+					'href'       => true,
+					'xlink:href' => true,
+					'x'          => true,
+					'y'          => true,
+					'width'      => true,
+					'height'     => true,
+				)
+			),
+			'switch'              => array_merge(
+				$core_attributes,
+				$aria_attributes,
+				$container_attributes
+			),
+			// Linking element.
+			'a'                   => array_merge(
+				$core_attributes,
+				$aria_attributes,
+				$presentation_attributes,
+				$container_attributes,
+				array(
+					'href'       => true,
+					'xlink:href' => true,
+					'target'     => true,
+					'rel'        => true,
+					'type'       => true,
+				)
+			),
+			'clippath'            => array_merge(
+				$core_attributes,
+				array(
+					'clippathunits' => true,
+					'transform'     => true,
+				)
+			),
+			'mask'                => array_merge(
+				$core_attributes,
+				array(
+					'x'                => true,
+					'y'                => true,
+					'width'            => true,
+					'height'           => true,
+					'maskunits'        => true,
+					'maskcontentunits' => true,
+				)
+			),
+			// Gradient elements.
+			'lineargradient'      => array_merge(
+				$core_attributes,
+				array(
+					'x1'                => true,
+					'x2'                => true,
+					'y1'                => true,
+					'y2'                => true,
+					'gradientunits'     => true,
+					'gradienttransform' => true,
+					'spreadmethod'      => true,
+					'href'              => true,
+					'xlink:href'        => true,
+				)
+			),
+			'radialgradient'      => array_merge(
+				$core_attributes,
+				array(
+					'cx'                => true,
+					'cy'                => true,
+					'r'                 => true,
+					'fx'                => true,
+					'fy'                => true,
+					'fr'                => true,
+					'gradientunits'     => true,
+					'gradienttransform' => true,
+					'spreadmethod'      => true,
+					'href'              => true,
+					'xlink:href'        => true,
+				)
+			),
+			'stop'                => array_merge(
+				$core_attributes,
+				array(
+					'offset'       => true,
+					'stop-color'   => true,
+					'stop-opacity' => true,
+				)
+			),
+			// Pattern element.
+			'pattern'             => array_merge(
+				$core_attributes,
+				array(
+					'x'                   => true,
+					'y'                   => true,
+					'width'               => true,
+					'height'              => true,
+					'patternunits'        => true,
+					'patterncontentunits' => true,
+					'patterntransform'    => true,
+					'viewbox'             => true,
+					'preserveaspectratio' => true,
+					'href'                => true,
+					'xlink:href'          => true,
+				)
+			),
+			// Filter elements.
+			'filter'              => array_merge(
+				$core_attributes,
+				array(
+					'x'              => true,
+					'y'              => true,
+					'width'          => true,
+					'height'         => true,
+					'filterunits'    => true,
+					'primitiveunits' => true,
+				)
+			),
+			'feblend'             => array(
+				'in'     => true,
+				'in2'    => true,
+				'mode'   => true,
+				'result' => true,
+			),
+			'fecolormatrix'       => array(
+				'in'     => true,
+				'type'   => true,
+				'values' => true,
+				'result' => true,
+			),
+			'fecomponenttransfer' => array(
+				'in'     => true,
+				'result' => true,
+			),
+			'fecomposite'         => array(
+				'in'       => true,
+				'in2'      => true,
+				'operator' => true,
+				'k1'       => true,
+				'k2'       => true,
+				'k3'       => true,
+				'k4'       => true,
+				'result'   => true,
+			),
+			'feconvolvematrix'    => array(
+				'in'            => true,
+				'order'         => true,
+				'kernelmatrix'  => true,
+				'divisor'       => true,
+				'bias'          => true,
+				'targetx'       => true,
+				'targety'       => true,
+				'edgemode'      => true,
+				'preservealpha' => true,
+				'result'        => true,
+			),
+			'fediffuselighting'   => array(
+				'in'              => true,
+				'surfacescale'    => true,
+				'diffuseconstant' => true,
+				'result'          => true,
+			),
+			'fedisplacementmap'   => array(
+				'in'               => true,
+				'in2'              => true,
+				'scale'            => true,
+				'xchannelselector' => true,
+				'ychannelselector' => true,
+				'result'           => true,
+			),
+			'fedistantlight'      => array(
+				'azimuth'   => true,
+				'elevation' => true,
+			),
+			'feflood'             => array(
+				'flood-color'   => true,
+				'flood-opacity' => true,
+				'result'        => true,
+			),
+			'fegaussianblur'      => array(
+				'in'           => true,
+				'stddeviation' => true,
+				'edgemode'     => true,
+				'result'       => true,
+			),
+			'feimage'             => array(
+				'href'                => true,
+				'xlink:href'          => true,
+				'preserveaspectratio' => true,
+				'result'              => true,
+			),
+			'femerge'             => array(
+				'result' => true,
+			),
+			'femergenode'         => array(
+				'in' => true,
+			),
+			'femorphology'        => array(
+				'in'       => true,
+				'operator' => true,
+				'radius'   => true,
+				'result'   => true,
+			),
+			'feoffset'            => array(
+				'in'     => true,
+				'dx'     => true,
+				'dy'     => true,
+				'result' => true,
+			),
+			'fepointlight'        => array(
+				'x' => true,
+				'y' => true,
+				'z' => true,
+			),
+			'fespecularlighting'  => array(
+				'in'               => true,
+				'surfacescale'     => true,
+				'specularconstant' => true,
+				'specularexponent' => true,
+				'result'           => true,
+			),
+			'fespotlight'         => array(
+				'x'                 => true,
+				'y'                 => true,
+				'z'                 => true,
+				'pointsatx'         => true,
+				'pointsaty'         => true,
+				'pointsatz'         => true,
+				'specularexponent'  => true,
+				'limitingconeangle' => true,
+			),
+			'fetile'              => array(
+				'in'     => true,
+				'result' => true,
+			),
+			'feturbulence'        => array(
+				'basefrequency' => true,
+				'numoctaves'    => true,
+				'seed'          => true,
+				'stitchtiles'   => true,
+				'type'          => true,
+				'result'        => true,
+			),
+			'fefunca'             => array(
+				'type'        => true,
+				'tablevalues' => true,
+				'slope'       => true,
+				'intercept'   => true,
+				'amplitude'   => true,
+				'exponent'    => true,
+				'offset'      => true,
+			),
+			'fefuncb'             => array(
+				'type'        => true,
+				'tablevalues' => true,
+				'slope'       => true,
+				'intercept'   => true,
+				'amplitude'   => true,
+				'exponent'    => true,
+				'offset'      => true,
+			),
+			'fefuncg'             => array(
+				'type'        => true,
+				'tablevalues' => true,
+				'slope'       => true,
+				'intercept'   => true,
+				'amplitude'   => true,
+				'exponent'    => true,
+				'offset'      => true,
+			),
+			'fefuncr'             => array(
+				'type'        => true,
+				'tablevalues' => true,
+				'slope'       => true,
+				'intercept'   => true,
+				'amplitude'   => true,
+				'exponent'    => true,
+				'offset'      => true,
+			),
+			// Text elements.
+			'text'                => array_merge(
+				$core_attributes,
+				$aria_attributes,
+				$presentation_attributes,
+				array(
+					'x'                  => true,
+					'y'                  => true,
+					'dx'                 => true,
+					'dy'                 => true,
+					'rotate'             => true,
+					'textlength'         => true,
+					'lengthadjust'       => true,
+					'text-anchor'        => true,
+					'font-family'        => true,
+					'font-size'          => true,
+					'font-weight'        => true,
+					'font-style'         => true,
+					'font-variant'       => true,
+					'text-decoration'    => true,
+					'writing-mode'       => true,
+					'letter-spacing'     => true,
+					'word-spacing'       => true,
+					'dominant-baseline'  => true,
+					'alignment-baseline' => true,
+					'baseline-shift'     => true,
+				)
+			),
+			'tspan'               => array_merge(
+				$core_attributes,
+				$aria_attributes,
+				$presentation_attributes,
+				array(
+					'x'               => true,
+					'y'               => true,
+					'dx'              => true,
+					'dy'              => true,
+					'rotate'          => true,
+					'textlength'      => true,
+					'lengthadjust'    => true,
+					'text-anchor'     => true,
+					'font-family'     => true,
+					'font-size'       => true,
+					'font-weight'     => true,
+					'font-style'      => true,
+					'text-decoration' => true,
+				)
+			),
+			'textpath'            => array_merge(
+				$core_attributes,
+				$aria_attributes,
+				$presentation_attributes,
+				array(
+					'href'        => true,
+					'xlink:href'  => true,
+					'startoffset' => true,
+					'method'      => true,
+					'spacing'     => true,
+					'text-anchor' => true,
+				)
+			),
+			// Descriptive elements.
+			'title'               => array(),
+			'desc'                => array(),
+			'metadata'            => array(),
+			// Image element.
+			'image'               => array_merge(
+				$core_attributes,
+				$aria_attributes,
+				$presentation_attributes,
+				array(
+					'x'                   => true,
+					'y'                   => true,
+					'width'               => true,
+					'height'              => true,
+					'href'                => true,
+					'xlink:href'          => true,
+					'preserveaspectratio' => true,
+				)
+			),
+			// Marker element.
+			'marker'              => array_merge(
+				$core_attributes,
+				array(
+					'markerunits'         => true,
+					'refx'                => true,
+					'refy'                => true,
+					'markerwidth'         => true,
+					'markerheight'        => true,
+					'orient'              => true,
+					'preserveaspectratio' => true,
+					'viewbox'             => true,
+				)
+			),
+			// Animation elements.
+			'animate'             => array_merge(
+				$core_attributes,
+				array(
+					'attributename' => true,
+					'from'          => true,
+					'to'            => true,
+					'dur'           => true,
+					'repeatcount'   => true,
+					'begin'         => true,
+					'end'           => true,
+					'values'        => true,
+					'keytimes'      => true,
+					'keysplines'    => true,
+					'calcmode'      => true,
+					'additive'      => true,
+					'accumulate'    => true,
+				)
+			),
+			'animatemotion'       => array_merge(
+				$core_attributes,
+				array(
+					'path'        => true,
+					'keypoints'   => true,
+					'rotate'      => true,
+					'keytimes'    => true,
+					'keysplines'  => true,
+					'calcmode'    => true,
+					'from'        => true,
+					'to'          => true,
+					'values'      => true,
+					'dur'         => true,
+					'repeatcount' => true,
+					'begin'       => true,
+					'end'         => true,
+					'additive'    => true,
+					'accumulate'  => true,
+				)
+			),
+			'animatetransform'    => array_merge(
+				$core_attributes,
+				array(
+					'attributename' => true,
+					'type'          => true,
+					'from'          => true,
+					'to'            => true,
+					'dur'           => true,
+					'repeatcount'   => true,
+					'begin'         => true,
+					'end'           => true,
+					'values'        => true,
+					'keytimes'      => true,
+					'keysplines'    => true,
+					'calcmode'      => true,
+					'additive'      => true,
+					'accumulate'    => true,
+				)
+			),
+			'set'                 => array_merge(
+				$core_attributes,
+				array(
+					'attributename' => true,
+					'to'            => true,
+					'begin'         => true,
+					'dur'           => true,
+					'end'           => true,
+					'repeatcount'   => true,
+				)
+			),
+		);
+
+		$processor = WP_HTML_Processor::create_fragment( $icon_content );
+		if ( ! $processor || ! $processor->next_token() || 'SVG' !== $processor->get_tag() ) {
+			return '';
+		}
+
+		$svg   = $processor->serialize_token();
+		$depth = $processor->get_current_depth();
+		while ( $processor->next_token() && $processor->get_current_depth() >= $depth ) {
+			$svg .= $processor->serialize_token();
+		}
+		$svg .= '</svg>';
+		return wp_kses( $svg, $allowed_tags );
+	}
+
 	/**
 	 * Modified to also search in icon labels
 	 */
diff --git a/phpunit/experimental/class-gutenberg-icons-registry-7-1-test.php b/phpunit/experimental/class-gutenberg-icons-registry-7-1-test.php
new file mode 100644
index 00000000000000..66b21bf7dc53fe
--- /dev/null
+++ b/phpunit/experimental/class-gutenberg-icons-registry-7-1-test.php
@@ -0,0 +1,198 @@
+<?php
+/**
+ * Unit tests covering Gutenberg_Icons_Registry_7_1::sanitize_icon_content functionality.
+ *
+ * @package Gutenberg
+ */
+class Gutenberg_Icons_Registry_7_1_Test extends WP_UnitTestCase {
+
+	/**
+	 * Registry instance for testing.
+	 *
+	 * @var Gutenberg_Icons_Registry_7_1
+	 */
+	private $registry;
+
+	/**
+	 * Sets up the test fixture.
+	 */
+	public function set_up() {
+		parent::set_up();
+		$this->registry = Gutenberg_Icons_Registry_7_1::get_instance();
+	}
+
+	/**
+	 * Invokes the Gutenberg_Icons_Registry_7_1::register method on the registry instance.
+	 *
+	 * @param string $icon_name       Icon name including namespace.
+	 * @param array  $icon_properties Icon properties (label, content, filePath).
+	 * @return bool True if the icon was registered successfully.
+	 */
+	private function register( $icon_name, $icon_properties ) {
+		$method = new ReflectionMethod( $this->registry, 'register' );
+		$method->setAccessible( true );
+		return $method->invoke( $this->registry, $icon_name, $icon_properties );
+	}
+
+	/**
+	 * Invokes the Gutenberg_Icons_Registry_7_1::sanitize_icon_content method on the registry instance.
+	 *
+	 * @param string $icon_content The icon SVG content to sanitize.
+	 * @return string The sanitized icon SVG content.
+	 */
+	private function sanitize_icon_content( $icon_content ) {
+		$method = new ReflectionMethod( $this->registry, 'sanitize_icon_content' );
+		$method->setAccessible( true );
+		return $method->invoke( $this->registry, $icon_content );
+	}
+
+	/**
+	 * @dataProvider data_sanitize_icon_content
+	 * @covers Gutenberg_Icons_Registry_7_1::sanitize_icon_content
+	 *
+	 * @param string $input    The icon content to sanitize.
+	 * @param string $expected The expected sanitized output.
+	 */
+	public function test_sanitize_icon_content( $input, $expected ) {
+		$sanitized = $this->sanitize_icon_content( $input );
+		$this->assertSame( $expected, $sanitized );
+	}
+
+	/**
+	 * Data provider for test_sanitize_icon_content.
+	 *
+	 * @return array[] Array of arrays with input and expected sanitized output.
+	 */
+	public function data_sanitize_icon_content() {
+		return array(
+			'extracts only first svg when multiple present' => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><path d="first"/></svg><svg xmlns="http://www.w3.org/2000/svg"><path d="second"/></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><path d="first" /></svg>',
+			),
+			'returns empty svg when html-like tags present' => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><p>paragraph content</p><path d="M0 0h24v24H0z" /><div>div content</div></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"></svg>',
+			),
+			'strips namespace attributes'                 => array(
+				'<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><path d="M0 0h24v24H0z" /></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><path d="M0 0h24v24H0z" /></svg>',
+			),
+
+			// Dangerous content is stripped (wp_kses).
+			'strips foreignObject but keeps text content' => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><foreignObject><p>paragraph content</p><script>alert(1)</script></foreignObject><path d="M0 0h24v24H0z" /></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg">paragraph contentalert(1)<path d="M0 0h24v24H0z" /></svg>',
+			),
+			'strips script tags'                          => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><script>alert(1)</script><path d="M0 0h24v24H0z" /></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg">alert(1)<path d="M0 0h24v24H0z" /></svg>',
+			),
+			'strips event handlers'                       => array(
+				'<svg xmlns="http://www.w3.org/2000/svg" onclick="alert(1)"><path d="M0 0h24v24H0z" onload="evil()" /></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><path d="M0 0h24v24H0z" /></svg>',
+			),
+			'strips javascript protocol in href'          => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><use href="javascript:alert(1)" /></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><use href="alert(1)" /></svg>',
+			),
+			'strips data protocol in href'                => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><use href="data:text/html,<script>alert(1)</script>" /></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><use href="text/html,&lt;script&gt;alert(1)&lt;/script&gt;" /></svg>',
+			),
+			'strips disallowed tags'                      => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><path d="M0 0"/><iframe src="evil"></iframe><object data="x" /></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><path d="M0 0" /></svg>',
+			),
+
+			// Returns empty string when input is not SVG.
+			'returns empty for empty string'              => array(
+				'',
+				'',
+			),
+			'returns empty for whitespace only'           => array(
+				"   \n\t  ",
+				'',
+			),
+			'returns empty for plain text'                => array(
+				'plain text without svg',
+				'',
+			),
+			'returns empty for html without svg'          => array(
+				'<div>not svg</div><p>content</p>',
+				'',
+			),
+			'returns empty when svg is not first element' => array(
+				'<p>before</p><svg xmlns="http://www.w3.org/2000/svg"><path d="M0 0" /></svg>',
+				'',
+			),
+
+			// Root SVG element.
+			'preserves root svg element'                  => array(
+				'<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 24 24" preserveAspectRatio="xMidYMid meet" width="24" height="24" class="icon" aria-hidden="true"><path d="M0 0" fill="currentColor" /></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg" viewbox="0 0 24 24" preserveaspectratio="xMidYMid meet" width="24" height="24" class="icon" aria-hidden="true"><path d="M0 0" fill="currentColor" /></svg>',
+			),
+			// Basic shape elements.
+			'preserves basic shape elements'              => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><path d="M0 0h24v24H0z" /><circle cx="12" cy="12" r="10" /><ellipse cx="12" cy="12" rx="10" ry="8" /><line x1="0" y1="0" x2="24" y2="24" /><polygon points="0,0 24,0 12,24" /><polyline points="0,0 12,12 24,0" /><rect x="2" y="2" width="20" height="20" /></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><path d="M0 0h24v24H0z" /><circle cx="12" cy="12" r="10" /><ellipse cx="12" cy="12" rx="10" ry="8" /><line x1="0" y1="0" x2="24" y2="24" /><polygon points="0,0 24,0 12,24" /><polyline points="0,0 12,12 24,0" /><rect x="2" y="2" width="20" height="20" /></svg>',
+			),
+			// Grouping and structural elements.
+			'preserves grouping and structural elements'  => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><defs><symbol id="icon" viewBox="0 0 24 24"><path d="M0 0h24v24H0z" /></symbol><clipPath id="clip"><circle cx="12" cy="12" r="10" /></clipPath><mask id="m"><rect fill="white" width="24" height="24" /></mask></defs><g><use href="#icon" /><use href="https://example.com/icon.svg#symbol" /><use href="#symbol" /></g></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><defs><symbol id="icon" viewbox="0 0 24 24"><path d="M0 0h24v24H0z" /></symbol><clipPath id="clip"><circle cx="12" cy="12" r="10" /></clipPath><mask id="m"><rect fill="white" width="24" height="24" /></mask></defs><g><use href="#icon" /><use href="https://example.com/icon.svg#symbol" /><use href="#symbol" /></g></svg>',
+			),
+			'preserves switch element'                    => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><switch><path d="M0 0h24v24H0z" /></switch></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><switch><path d="M0 0h24v24H0z" /></switch></svg>',
+			),
+			'preserves view element'                      => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><view id="v" viewBox="0 0 24 24" /><path d="M0 0h24v24H0z" /></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><view id="v" viewbox="0 0 24 24" /><path d="M0 0h24v24H0z" /></svg>',
+			),
+			'preserves linking element'                   => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><a href="https://example.com"><path d="M0 0h24v24H0z" /></a></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><a href="https://example.com"><path d="M0 0h24v24H0z" /></a></svg>',
+			),
+			// Gradient elements.
+			'preserves gradient elements'                 => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><linearGradient id="lin"><stop offset="0%" stop-color="red" /><stop offset="100%" stop-color="blue" /></linearGradient><radialGradient id="rad"><stop offset="0%" stop-color="red" /><stop offset="100%" stop-color="blue" /></radialGradient><rect fill="url(#lin)" width="24" height="24" /></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><linearGradient id="lin"><stop offset="0%" stop-color="red" /><stop offset="100%" stop-color="blue" /></linearGradient><radialGradient id="rad"><stop offset="0%" stop-color="red" /><stop offset="100%" stop-color="blue" /></radialGradient><rect fill="url(#lin)" width="24" height="24" /></svg>',
+			),
+			// Pattern element.
+			'preserves pattern element'                   => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><pattern id="pat" width="4" height="4"><rect width="4" height="4" fill="currentColor" /></pattern><rect fill="url(#pat)" width="24" height="24" /></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><pattern id="pat" width="4" height="4"><rect width="4" height="4" fill="currentColor" /></pattern><rect fill="url(#pat)" width="24" height="24" /></svg>',
+			),
+			// Filter elements.
+			'preserves filter elements'                   => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><filter id="blur"><feGaussianBlur in="SourceGraphic" stdDeviation="1" /></filter><rect filter="url(#blur)" width="24" height="24" /></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><filter id="blur"><feGaussianBlur in="SourceGraphic" stddeviation="1" /></filter><rect filter="url(#blur)" width="24" height="24" /></svg>',
+			),
+			// Text elements.
+			'preserves text elements'                     => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><path id="p" d="M0,20 Q12,0 24,20" /><text x="12" y="16" text-anchor="middle">A<tspan font-weight="bold">B</tspan></text><text><textPath href="#p">path</textPath></text></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><path id="p" d="M0,20 Q12,0 24,20" /><text x="12" y="16" text-anchor="middle">A<tspan font-weight="bold">B</tspan></text><text><textPath href="#p">path</textPath></text></svg>',
+			),
+			// Descriptive elements.
+			'preserves descriptive elements'              => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><title>Icon title</title><desc>Description</desc><metadata></metadata><path d="M0 0h24v24H0z" /></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><title>Icon title</title><desc>Description</desc><metadata></metadata><path d="M0 0h24v24H0z" /></svg>',
+			),
+			// Image element.
+			'preserves image element'                     => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><image href="https://example.com/icon.png" width="24" height="24" /></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><image href="https://example.com/icon.png" width="24" height="24" /></svg>',
+			),
+			// Marker element.
+			'preserves marker element'                    => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><marker id="arrow" refX="10" refY="5"><path d="M0,0 L10,5 L0,10" /></marker><path d="M0,12 L24,12" marker-start="url(#arrow)" /></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><marker id="arrow" refx="10" refy="5"><path d="M0,0 L10,5 L0,10" /></marker><path d="M0,12 L24,12" marker-start="url(#arrow)" /></svg>',
+			),
+			// Animation elements.
+			'preserves animation elements'                => array(
+				'<svg xmlns="http://www.w3.org/2000/svg"><animate attributeName="opacity" from="1" to="0.5" dur="1s" /><animateTransform attributeName="transform" type="rotate" from="0 12 12" to="360 12 12" dur="2s" /><path d="M0,0 L10,10"><animateMotion path="M0,0 L24,24" dur="1s" /></path><path d="M0 0"><set attributeName="opacity" to="0.5" begin="1s" /></path></svg>',
+				'<svg xmlns="http://www.w3.org/2000/svg"><animate attributename="opacity" from="1" to="0.5" dur="1s" /><animateTransform attributename="transform" type="rotate" from="0 12 12" to="360 12 12" dur="2s" /><path d="M0,0 L10,10"><animateMotion path="M0,0 L24,24" dur="1s" /></path><path d="M0 0"><set attributename="opacity" to="0.5" begin="1s" /></path></svg>',
+			),
+		);
+	}
+}