diff --git a/src/wp-includes/class-wp-customize-manager.php b/src/wp-includes/class-wp-customize-manager.php
index 0a8c743019d80..3026d3b039136 100644
--- a/src/wp-includes/class-wp-customize-manager.php
+++ b/src/wp-includes/class-wp-customize-manager.php
@@ -479,7 +479,7 @@ protected function wp_die( $ajax_message, $message = null ) {
 			} )( wp.customize, <?php echo wp_json_encode( $settings, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ); ?> );
 			</script>
 			<?php
-			$message .= wp_get_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) );
+			$message .= wp_get_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) . "\n//# sourceURL=" . rawurlencode( __METHOD__ ) );
 		}
 
 		wp_die( $message );
@@ -2105,7 +2105,7 @@ public function remove_frameless_preview_messenger_channel() {
 		} )();
 		</script>
 		<?php
-		wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) );
+		wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) . "\n//# sourceURL=" . rawurlencode( __METHOD__ ) );
 	}
 
 	/**
@@ -2227,7 +2227,7 @@ public function customize_preview_settings() {
 			})( _wpCustomizeSettings.values );
 		</script>
 		<?php
-		wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) );
+		wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) . "\n//# sourceURL=" . rawurlencode( __METHOD__ ) );
 	}
 
 	/**
@@ -5022,7 +5022,7 @@ public function customize_pane_settings() {
 			?>
 		</script>
 		<?php
-		wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) );
+		wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) . "\n//# sourceURL=" . rawurlencode( __METHOD__ ) );
 	}
 
 	/**
diff --git a/src/wp-includes/class-wp-customize-nav-menus.php b/src/wp-includes/class-wp-customize-nav-menus.php
index 47ceff52dfd39..ff5581df79149 100644
--- a/src/wp-includes/class-wp-customize-nav-menus.php
+++ b/src/wp-includes/class-wp-customize-nav-menus.php
@@ -1556,7 +1556,7 @@ public function export_preview_data() {
 		$exports = array(
 			'navMenuInstanceArgs' => $this->preview_nav_menu_instance_args,
 		);
-		wp_print_inline_script_tag( sprintf( 'var _wpCustomizePreviewNavMenusExports = %s;', wp_json_encode( $exports, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ) ) );
+		wp_print_inline_script_tag( sprintf( 'var _wpCustomizePreviewNavMenusExports = %s;', wp_json_encode( $exports, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ) ) . "\n//# sourceURL=" . rawurlencode( __METHOD__ ) );
 	}
 
 	/**
diff --git a/src/wp-includes/class-wp-customize-widgets.php b/src/wp-includes/class-wp-customize-widgets.php
index fba534106f8a8..6420e2202865d 100644
--- a/src/wp-includes/class-wp-customize-widgets.php
+++ b/src/wp-includes/class-wp-customize-widgets.php
@@ -1335,7 +1335,7 @@ public function export_preview_data() {
 			unset( $registered_widget['callback'] ); // May not be JSON-serializable.
 		}
 		wp_print_inline_script_tag(
-			sprintf( 'var _wpWidgetCustomizerPreviewSettings = %s;', wp_json_encode( $settings, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ) )
+			sprintf( 'var _wpWidgetCustomizerPreviewSettings = %s;', wp_json_encode( $settings, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ) ) . "\n//# sourceURL=" . rawurlencode( __METHOD__ )
 		);
 	}
 
diff --git a/src/wp-includes/comment-template.php b/src/wp-includes/comment-template.php
index b5d37f5aae081..143920f3c3fdc 100644
--- a/src/wp-includes/comment-template.php
+++ b/src/wp-includes/comment-template.php
@@ -1374,7 +1374,7 @@ function wp_comment_form_unfiltered_html_nonce() {
 
 	if ( current_user_can( 'unfiltered_html' ) ) {
 		wp_nonce_field( 'unfiltered-html-comment_' . $post_id, '_wp_unfiltered_html_comment_disabled', false );
-		wp_print_inline_script_tag( "(function(){if(window===window.parent){document.getElementById('_wp_unfiltered_html_comment_disabled').name='_wp_unfiltered_html_comment';}})();" );
+		wp_print_inline_script_tag( "(function(){if(window===window.parent){document.getElementById('_wp_unfiltered_html_comment_disabled').name='_wp_unfiltered_html_comment';}})();\n//# sourceURL=" . rawurlencode( __FUNCTION__ ) );
 	}
 }
 
diff --git a/src/wp-includes/customize/class-wp-customize-selective-refresh.php b/src/wp-includes/customize/class-wp-customize-selective-refresh.php
index f695338657828..f51b1e6dc7627 100644
--- a/src/wp-includes/customize/class-wp-customize-selective-refresh.php
+++ b/src/wp-includes/customize/class-wp-customize-selective-refresh.php
@@ -193,7 +193,7 @@ public function export_preview_data() {
 		);
 
 		// Export data to JS.
-		wp_print_inline_script_tag( sprintf( 'var _customizePartialRefreshExports = %s;', wp_json_encode( $exports, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ) ) );
+		wp_print_inline_script_tag( sprintf( 'var _customizePartialRefreshExports = %s;', wp_json_encode( $exports, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ) ) . "\n//# sourceURL=" . rawurlencode( __METHOD__ ) );
 	}
 
 	/**
diff --git a/src/wp-includes/embed.php b/src/wp-includes/embed.php
index 937dd6fb27869..c558622876122 100644
--- a/src/wp-includes/embed.php
+++ b/src/wp-includes/embed.php
@@ -518,8 +518,9 @@ function get_post_embed_html( $width, $height, $post = null ) {
 	 * will fail to match and everything will be matched by `.*` and not included in the group. This regex issue goes
 	 * back to WordPress 4.4, so in order to not break older installs this script must come at the end.
 	 */
+	$js_path = '/js/wp-embed' . wp_scripts_get_suffix() . '.js';
 	$output .= wp_get_inline_script_tag(
-		file_get_contents( ABSPATH . WPINC . '/js/wp-embed' . wp_scripts_get_suffix() . '.js' )
+		file_get_contents( ABSPATH . WPINC . $js_path ) . "\n//# sourceURL=" . includes_url( $js_path )
 	);
 
 	/**
@@ -1090,8 +1091,9 @@ function wp_enqueue_embed_styles() {
  * @since 4.4.0
  */
 function print_embed_scripts() {
+	$js_path = '/js/wp-embed-template' . wp_scripts_get_suffix() . '.js';
 	wp_print_inline_script_tag(
-		file_get_contents( ABSPATH . WPINC . '/js/wp-embed-template' . wp_scripts_get_suffix() . '.js' )
+		file_get_contents( ABSPATH . WPINC . $js_path ) . "\n//# sourceURL=" . includes_url( $js_path )
 	);
 }
 
diff --git a/src/wp-includes/functions.php b/src/wp-includes/functions.php
index c420ebc232f1c..42d029c78ae1f 100644
--- a/src/wp-includes/functions.php
+++ b/src/wp-includes/functions.php
@@ -7797,6 +7797,7 @@ function wp_post_preview_js() {
 			window.addEventListener( 'pagehide', function() { window.name = ''; } );
 		}
 	}());
+	//# sourceURL=<?php echo rawurlencode( __FUNCTION__ ); ?>
 	</script>
 	<?php
 	wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) );
diff --git a/src/wp-includes/theme.php b/src/wp-includes/theme.php
index 8e1029780a5c0..c2a3a7e838ef9 100644
--- a/src/wp-includes/theme.php
+++ b/src/wp-includes/theme.php
@@ -3815,7 +3815,7 @@ function wp_customize_support_script() {
 		}());
 	</script>
 	<?php
-	wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) );
+	wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) . "\n//# sourceURL=" . rawurlencode( __FUNCTION__ ) );
 }
 
 /**
diff --git a/src/wp-includes/widgets/class-wp-widget-archives.php b/src/wp-includes/widgets/class-wp-widget-archives.php
index 7457244833a45..5ebc0a0357a0d 100644
--- a/src/wp-includes/widgets/class-wp-widget-archives.php
+++ b/src/wp-includes/widgets/class-wp-widget-archives.php
@@ -120,7 +120,7 @@ function onSelectChange() {
 })();
 </script>
 			<?php
-			wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) );
+			wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) . "\n//# sourceURL=" . rawurlencode( __METHOD__ ) );
 		} else {
 			$format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml';
 
diff --git a/src/wp-includes/widgets/class-wp-widget-categories.php b/src/wp-includes/widgets/class-wp-widget-categories.php
index b79881e75292f..d1cef33f88695 100644
--- a/src/wp-includes/widgets/class-wp-widget-categories.php
+++ b/src/wp-includes/widgets/class-wp-widget-categories.php
@@ -108,7 +108,7 @@ function onCatChange() {
 </script>
 
 			<?php
-			wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) );
+			wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) . "\n//# sourceURL=" . rawurlencode( __METHOD__ ) );
 		} else {
 			$format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml';