diff --git a/src/main/config/macroConfig.ts b/src/main/config/macroConfig.ts
new file mode 100644
index 0000000..a26ba03
--- /dev/null
+++ b/src/main/config/macroConfig.ts
@@ -0,0 +1,107 @@
+/**
+ * Shared Macro Configuration
+ * 
+ * This file defines the macro validation rules that can be used by both
+ * renderer and main process (e.g., for import analysis validation).
+ * 
+ * The full macro implementations (with render functions) live in:
+ * src/renderer/macros/definitions/
+ */
+
+export interface MacroConfig {
+  /** The macro name (lowercase) */
+  name: string;
+  /** Human-readable description */
+  description: string;
+  /** Required parameters that must be present */
+  requiredParams?: string[];
+  /** Optional parameter validation function */
+  validate?: (params: Record<string, string>) => string | undefined;
+}
+
+/**
+ * Registry of known macro configurations.
+ * Add new macros here to enable validation during import analysis.
+ */
+export const macroConfigs: MacroConfig[] = [
+  {
+    name: 'youtube',
+    description: 'Embeds a YouTube video player',
+    requiredParams: ['id'],
+    validate: (params) => {
+      if (!params.id) {
+        return 'YouTube macro requires an "id" parameter (the video ID)';
+      }
+      // Basic validation of YouTube ID format (11 characters)
+      if (!/^[\w-]{11}$/.test(params.id)) {
+        return 'Invalid YouTube video ID format';
+      }
+      return undefined;
+    },
+  },
+  {
+    name: 'gallery',
+    description: 'Renders an image gallery from linked media files',
+    validate: (params) => {
+      if (params.columns) {
+        const cols = parseInt(params.columns, 10);
+        if (isNaN(cols) || cols < 1 || cols > 6) {
+          return 'Gallery columns must be a number between 1 and 6';
+        }
+      }
+      return undefined;
+    },
+  },
+];
+
+/**
+ * Get a map of macro configs by name for quick lookup.
+ */
+export function getMacroConfigMap(): Map<string, MacroConfig> {
+  const map = new Map<string, MacroConfig>();
+  for (const config of macroConfigs) {
+    map.set(config.name.toLowerCase(), config);
+  }
+  return map;
+}
+
+/**
+ * Validate macro parameters against known configurations.
+ * 
+ * @param macroName - The macro name
+ * @param params - The macro parameters
+ * @returns Error message if invalid, undefined if valid or macro is unknown
+ */
+export function validateMacroParams(
+  macroName: string,
+  params: Record<string, string>
+): { valid: boolean; error?: string; known: boolean } {
+  const config = getMacroConfigMap().get(macroName.toLowerCase());
+  
+  if (!config) {
+    return { valid: false, known: false };
+  }
+  
+  // Check required parameters
+  if (config.requiredParams) {
+    for (const param of config.requiredParams) {
+      if (!params[param]) {
+        return { 
+          valid: false, 
+          known: true, 
+          error: `Missing required parameter: ${param}` 
+        };
+      }
+    }
+  }
+  
+  // Run custom validation if provided
+  if (config.validate) {
+    const error = config.validate(params);
+    if (error) {
+      return { valid: false, known: true, error };
+    }
+  }
+  
+  return { valid: true, known: true };
+}
diff --git a/src/main/engine/ImportAnalysisEngine.ts b/src/main/engine/ImportAnalysisEngine.ts
index cd90832..dccbd97 100644
--- a/src/main/engine/ImportAnalysisEngine.ts
+++ b/src/main/engine/ImportAnalysisEngine.ts
@@ -6,6 +6,7 @@ import { getDatabase } from '../database';
 import { posts, media, tags } from '../database/schema';
 import { eq } from 'drizzle-orm';
 import type { WxrData, WxrPost, WxrMedia, WxrSiteInfo, WxrCategory, WxrTag } from './WxrParser';
+import { getMacroConfigMap, type MacroConfig } from '../config/macroConfig';
 
 export type PostAnalysisStatus = 'new' | 'update' | 'conflict' | 'content-duplicate';
 export type MediaAnalysisStatus = 'new' | 'update' | 'conflict' | 'content-duplicate' | 'missing';
@@ -48,6 +49,55 @@ export interface AnalyzedTag {
   mappedTo?: string; // When set, indicates this item should be mapped to the given name on import
 }
 
+/** Validation status for a macro usage */
+export type MacroValidationStatus = 'valid' | 'invalid' | 'unknown';
+
+/** A single unique usage pattern of a macro */
+export interface MacroUsage {
+  /** The parameters used in this particular usage */
+  params: Record<string, string>;
+  /** How many times this exact parameter combination was used */
+  count: number;
+  /** Whether this usage is valid according to our macro definition */
+  validationStatus: MacroValidationStatus;
+  /** Error message if validation failed */
+  validationError?: string;
+  /** Serialized params for deduplication */
+  paramsKey: string;
+}
+
+/** A discovered macro from the import content */
+export interface DiscoveredMacro {
+  /** The macro name (lowercase) */
+  name: string;
+  /** Whether this macro maps to an internal definition */
+  mapped: boolean;
+  /** Total number of times this macro appears across all content */
+  totalCount: number;
+  /** Unique usages with different parameters */
+  usages: MacroUsage[];
+  /** Slugs of posts/pages where this macro is used */
+  postSlugs: string[];
+}
+
+/** Summary of macro analysis */
+export interface MacroAnalysisSummary {
+  /** Total unique macros discovered */
+  total: number;
+  /** Number of macros that map to internal definitions */
+  mappedCount: number;
+  /** Number of macros that don't map to internal definitions */
+  unmappedCount: number;
+  /** All discovered macros with their usages */
+  discovered: DiscoveredMacro[];
+}
+
+/** Minimal interface for macro definition validation */
+export interface MacroDefinitionLike {
+  name: string;
+  validate?: (params: Record<string, string>) => string | undefined;
+}
+
 export interface ImportAnalysisReport {
   sourceFile: string;
   site: WxrSiteInfo;
@@ -79,27 +129,69 @@ export interface ImportAnalysisReport {
   };
   categories: AnalyzedCategory[];
   tags: AnalyzedTag[];
+  macros: MacroAnalysisSummary;
 }
 
 export class ImportAnalysisEngine {
   private currentProjectId: string = '';
   private turndown: TurndownService;
+  private macroDefinitions: Map<string, MacroDefinitionLike> = new Map();
   
   // Progress callback for reporting analysis steps
   onProgress?: (step: string, detail?: string) => void;
 
+  // Regex to match WordPress shortcodes: [macroname param="val" param2='val2']
+  // This matches single brackets (NOT double brackets like our internal format)
+  // Uses negative lookbehind (?<!\[) and negative lookahead (?!\]) to exclude [[...]]
+  private static readonly SHORTCODE_REGEX = /(?<!\[)\[(\w+)([^\]]*?)(?:\s*\/)?\](?!\])/g;
+  
+  // Regex to extract individual parameters from shortcode
+  private static readonly PARAM_REGEX = /(\w+)=["']([^"']*?)["']/g;
+
   constructor() {
     this.turndown = new TurndownService({
       headingStyle: 'atx',
       codeBlockStyle: 'fenced',
       bulletListMarker: '-',
     });
+    
+    // Load macro definitions from shared config
+    this.loadMacroConfigsFromShared();
+  }
+
+  /**
+   * Load macro definitions from the shared macro config.
+   * Called automatically in constructor.
+   */
+  private loadMacroConfigsFromShared(): void {
+    try {
+      const configs = getMacroConfigMap();
+      // Convert MacroConfig to MacroDefinitionLike
+      for (const [name, config] of configs) {
+        this.macroDefinitions.set(name, {
+          name: config.name,
+          validate: config.validate,
+        });
+      }
+    } catch (error) {
+      // Config not available - macros will be marked as unmapped
+      console.warn('Could not load macro configs:', error);
+    }
   }
 
   setProjectContext(projectId: string): void {
     this.currentProjectId = projectId;
   }
 
+  /**
+   * Set macro definitions for mapping and validation.
+   * This overrides the auto-loaded shared config. Useful for testing.
+   * @param definitions Map of macro name (lowercase) to definition
+   */
+  setMacroDefinitions(definitions: Map<string, MacroDefinitionLike>): void {
+    this.macroDefinitions = definitions;
+  }
+
   async analyzeWxr(wxrData: WxrData, sourceFile: string, uploadsFolder?: string): Promise<ImportAnalysisReport> {
     const db = getDatabase().getLocal();
 
@@ -194,6 +286,11 @@ export class ImportAnalysisEngine {
       existsInProject: existingTagNames.has(tag.name.toLowerCase()),
     }));
 
+    this.onProgress?.('Discovering macros...');
+    
+    // Analyze macros from posts and pages content
+    const macroAnalysis = this.analyzeMacros([...wxrData.posts, ...wxrData.pages]);
+
     return {
       sourceFile,
       site: wxrData.site,
@@ -203,6 +300,7 @@ export class ImportAnalysisEngine {
       media: this.summarizeMediaAnalysis(analyzedMedia),
       categories: analyzedCategories,
       tags: analyzedTags,
+      macros: macroAnalysis,
     };
   }
 
@@ -348,4 +446,154 @@ export class ImportAnalysisEngine {
   private calculateChecksum(content: string): string {
     return crypto.createHash('md5').update(content).digest('hex');
   }
+
+  /**
+   * Analyze macros (WordPress shortcodes) from post/page content.
+   * Discovers all shortcodes, aggregates their usages, and validates against definitions.
+   */
+  private analyzeMacros(posts: WxrPost[]): MacroAnalysisSummary {
+    // Map of macro name -> discovered macro data
+    const macroMap = new Map<string, {
+      name: string;
+      totalCount: number;
+      usages: Map<string, { params: Record<string, string>; count: number }>;
+      postSlugs: Set<string>;
+    }>();
+
+    // Process each post/page
+    for (const post of posts) {
+      if (!post.content) continue;
+      
+      const shortcodes = this.parseShortcodes(post.content);
+      
+      for (const shortcode of shortcodes) {
+        const name = shortcode.name.toLowerCase();
+        
+        let macroData = macroMap.get(name);
+        if (!macroData) {
+          macroData = {
+            name,
+            totalCount: 0,
+            usages: new Map(),
+            postSlugs: new Set(),
+          };
+          macroMap.set(name, macroData);
+        }
+        
+        macroData.totalCount++;
+        macroData.postSlugs.add(post.slug);
+        
+        // Create a key for this parameter combination
+        const paramsKey = this.serializeParams(shortcode.params);
+        const existingUsage = macroData.usages.get(paramsKey);
+        if (existingUsage) {
+          existingUsage.count++;
+        } else {
+          macroData.usages.set(paramsKey, { params: shortcode.params, count: 1 });
+        }
+      }
+    }
+
+    // Convert to final format with validation
+    const discovered: DiscoveredMacro[] = [];
+    
+    for (const macroData of macroMap.values()) {
+      const definition = this.macroDefinitions.get(macroData.name);
+      const mapped = definition !== undefined;
+      
+      const usages: MacroUsage[] = [];
+      for (const [paramsKey, usage] of macroData.usages) {
+        let validationStatus: MacroValidationStatus = 'unknown';
+        let validationError: string | undefined;
+        
+        if (mapped && definition) {
+          if (definition.validate) {
+            const error = definition.validate(usage.params);
+            if (error) {
+              validationStatus = 'invalid';
+              validationError = error;
+            } else {
+              validationStatus = 'valid';
+            }
+          } else {
+            // Macro is mapped but has no validation - consider valid
+            validationStatus = 'valid';
+          }
+        }
+        
+        usages.push({
+          params: usage.params,
+          count: usage.count,
+          validationStatus,
+          validationError,
+          paramsKey,
+        });
+      }
+      
+      discovered.push({
+        name: macroData.name,
+        mapped,
+        totalCount: macroData.totalCount,
+        usages,
+        postSlugs: Array.from(macroData.postSlugs),
+      });
+    }
+
+    // Sort discovered macros by name
+    discovered.sort((a, b) => a.name.localeCompare(b.name));
+
+    return {
+      total: discovered.length,
+      mappedCount: discovered.filter(m => m.mapped).length,
+      unmappedCount: discovered.filter(m => !m.mapped).length,
+      discovered,
+    };
+  }
+
+  /**
+   * Parse WordPress shortcodes from content.
+   * Returns array of { name, params } for each shortcode found.
+   */
+  private parseShortcodes(content: string): Array<{ name: string; params: Record<string, string> }> {
+    const shortcodes: Array<{ name: string; params: Record<string, string> }> = [];
+    
+    // Reset regex lastIndex
+    ImportAnalysisEngine.SHORTCODE_REGEX.lastIndex = 0;
+    
+    let match;
+    while ((match = ImportAnalysisEngine.SHORTCODE_REGEX.exec(content)) !== null) {
+      const name = match[1];
+      const paramString = match[2] || '';
+      const params = this.parseShortcodeParams(paramString);
+      
+      shortcodes.push({ name, params });
+    }
+    
+    return shortcodes;
+  }
+
+  /**
+   * Parse parameters from a shortcode parameter string.
+   */
+  private parseShortcodeParams(paramString: string): Record<string, string> {
+    const params: Record<string, string> = {};
+    
+    // Reset regex lastIndex
+    ImportAnalysisEngine.PARAM_REGEX.lastIndex = 0;
+    
+    let match;
+    while ((match = ImportAnalysisEngine.PARAM_REGEX.exec(paramString)) !== null) {
+      params[match[1]] = match[2];
+    }
+    
+    return params;
+  }
+
+  /**
+   * Serialize params to a stable string for deduplication.
+   */
+  private serializeParams(params: Record<string, string>): string {
+    const sorted = Object.entries(params).sort(([a], [b]) => a.localeCompare(b));
+    return JSON.stringify(sorted);
+  }
 }
diff --git a/src/renderer/components/ImportAnalysisView/ImportAnalysisView.css b/src/renderer/components/ImportAnalysisView/ImportAnalysisView.css
index 392c50c..ce0b146 100644
--- a/src/renderer/components/ImportAnalysisView/ImportAnalysisView.css
+++ b/src/renderer/components/ImportAnalysisView/ImportAnalysisView.css
@@ -666,3 +666,208 @@
   margin: 0;
   font-size: 13px;
 }
+
+/* =================================
+   MACROS SECTION STYLES
+   ================================= */
+
+.macro-summary-counts {
+  display: inline-flex;
+  gap: 8px;
+  margin-left: auto;
+  font-size: 11px;
+  font-weight: normal;
+}
+
+.macro-summary-counts .mapped-count {
+  color: var(--vscode-charts-green, #89d185);
+}
+
+.macro-summary-counts .unmapped-count {
+  color: var(--vscode-charts-orange, #cca700);
+}
+
+.macros-list {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  margin-top: 12px;
+}
+
+.macro-item {
+  background: var(--vscode-input-background);
+  border: 1px solid var(--vscode-input-border, transparent);
+  border-radius: 6px;
+  overflow: hidden;
+}
+
+.macro-item.mapped {
+  border-left: 3px solid var(--vscode-charts-green, #89d185);
+}
+
+.macro-item.unmapped {
+  border-left: 3px solid var(--vscode-charts-orange, #cca700);
+}
+
+.macro-header {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 10px 12px;
+  cursor: pointer;
+  transition: background 0.15s ease;
+}
+
+.macro-header:hover {
+  background: var(--vscode-list-hoverBackground, rgba(255, 255, 255, 0.04));
+}
+
+.toggle-icon.small {
+  font-size: 8px;
+  width: 10px;
+}
+
+.macro-name {
+  font-weight: 600;
+  font-family: var(--vscode-editor-font-family, monospace);
+  color: var(--vscode-foreground);
+}
+
+.macro-status-badge {
+  font-size: 10px;
+  padding: 2px 6px;
+  border-radius: 3px;
+  font-weight: 500;
+  text-transform: uppercase;
+  letter-spacing: 0.3px;
+}
+
+.macro-status-badge.mapped {
+  background: rgba(137, 209, 133, 0.15);
+  color: var(--vscode-charts-green, #89d185);
+}
+
+.macro-status-badge.unmapped {
+  background: rgba(204, 167, 0, 0.15);
+  color: var(--vscode-charts-orange, #cca700);
+}
+
+.macro-count {
+  margin-left: auto;
+  font-size: 11px;
+  color: var(--vscode-descriptionForeground);
+}
+
+.macro-usages {
+  padding: 0 12px 12px 30px;
+}
+
+.macro-usages-header {
+  font-size: 11px;
+  color: var(--vscode-descriptionForeground);
+  margin-bottom: 8px;
+  padding-bottom: 8px;
+  border-bottom: 1px solid var(--vscode-input-border, rgba(255, 255, 255, 0.1));
+}
+
+.macro-posts-label {
+  font-style: italic;
+}
+
+.macro-usages-list {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+
+.macro-usage {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 12px;
+  padding: 8px 10px;
+  border-radius: 4px;
+  border-left: 3px solid transparent;
+  background: var(--vscode-sideBar-background);
+}
+
+.macro-usage.valid {
+  border-left-color: var(--vscode-charts-green, #89d185);
+}
+
+.macro-usage.invalid {
+  border-left-color: var(--vscode-errorForeground, #f85149);
+  background: rgba(248, 81, 73, 0.08);
+}
+
+.macro-usage.unknown {
+  border-left-color: var(--vscode-descriptionForeground);
+}
+
+.macro-usage-params {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+  font-family: var(--vscode-editor-font-family, monospace);
+  font-size: 12px;
+}
+
+.no-params {
+  color: var(--vscode-descriptionForeground);
+  font-style: italic;
+  font-family: inherit;
+}
+
+.macro-param {
+  display: inline-flex;
+  align-items: center;
+  gap: 1px;
+}
+
+.param-key {
+  color: var(--vscode-symbolIcon-propertyForeground, #9cdcfe);
+}
+
+.param-value {
+  color: var(--vscode-symbolIcon-stringForeground, #ce9178);
+}
+
+.macro-usage-meta {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  flex-shrink: 0;
+}
+
+.validation-badge {
+  width: 18px;
+  height: 18px;
+  border-radius: 50%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 11px;
+  font-weight: 600;
+}
+
+.validation-badge.valid {
+  background: rgba(137, 209, 133, 0.2);
+  color: var(--vscode-charts-green, #89d185);
+}
+
+.validation-badge.invalid {
+  background: rgba(248, 81, 73, 0.2);
+  color: var(--vscode-errorForeground, #f85149);
+}
+
+.validation-badge.unknown {
+  background: rgba(128, 128, 128, 0.2);
+  color: var(--vscode-descriptionForeground);
+}
+
+.usage-count {
+  font-size: 11px;
+  color: var(--vscode-descriptionForeground);
+  min-width: 24px;
+  text-align: right;
+}
diff --git a/src/renderer/components/ImportAnalysisView/ImportAnalysisView.tsx b/src/renderer/components/ImportAnalysisView/ImportAnalysisView.tsx
index d846b6a..8d60f13 100644
--- a/src/renderer/components/ImportAnalysisView/ImportAnalysisView.tsx
+++ b/src/renderer/components/ImportAnalysisView/ImportAnalysisView.tsx
@@ -11,6 +11,7 @@ interface AnalysisReport {
   media: MediaSection;
   categories: TaxonomyItem[];
   tags: TaxonomyItem[];
+  macros: MacroAnalysisSummary;
 }
 
 interface ItemSection {
@@ -75,6 +76,35 @@ interface TaxonomyItem {
   mappedTo?: string; // When set, indicates this item should be mapped to the given name on import
 }
 
+/** Validation status for a macro usage */
+type MacroValidationStatus = 'valid' | 'invalid' | 'unknown';
+
+/** A single unique usage pattern of a macro */
+interface MacroUsage {
+  params: Record<string, string>;
+  count: number;
+  validationStatus: MacroValidationStatus;
+  validationError?: string;
+  paramsKey: string;
+}
+
+/** A discovered macro from the import content */
+interface DiscoveredMacro {
+  name: string;
+  mapped: boolean;
+  totalCount: number;
+  usages: MacroUsage[];
+  postSlugs: string[];
+}
+
+/** Summary of macro analysis */
+interface MacroAnalysisSummary {
+  total: number;
+  mappedCount: number;
+  unmappedCount: number;
+  discovered: DiscoveredMacro[];
+}
+
 interface ImportAnalysisViewProps {
   definitionId: string;
 }
@@ -368,6 +398,14 @@ export const ImportAnalysisView: React.FC<ImportAnalysisViewProps> = ({ definiti
               onMappingUpdated={handleSingleMappingUpdated}
             />
           )}
+
+          {report.macros && report.macros.total > 0 && (
+            <MacrosSection
+              macros={report.macros}
+              expanded={expandedSections['macros'] ?? false}
+              onToggle={() => toggleSection('macros')}
+            />
+          )}
         </>
       )}
     </div>
@@ -1015,3 +1053,104 @@ const TaxonomyPill: React.FC<{
     </span>
   );
 };
+
+/**
+ * MacrosSection - Shows discovered macros from import content
+ * Displays macro names, their different usages (parameters), and validation status
+ */
+const MacrosSection: React.FC<{
+  macros: MacroAnalysisSummary;
+  expanded: boolean;
+  onToggle: () => void;
+}> = ({ macros, expanded, onToggle }) => {
+  const [expandedMacros, setExpandedMacros] = useState<Set<string>>(new Set());
+
+  const toggleMacro = (name: string) => {
+    setExpandedMacros(prev => {
+      const next = new Set(prev);
+      if (next.has(name)) {
+        next.delete(name);
+      } else {
+        next.add(name);
+      }
+      return next;
+    });
+  };
+
+  return (
+    <div className="import-detail-section">
+      <h3 onClick={onToggle}>
+        <span className={`toggle-icon ${expanded ? 'open' : ''}`}>&#9654;</span>
+        Macros ({macros.total})
+        <span className="macro-summary-counts">
+          <span className="mapped-count">{macros.mappedCount} mapped</span>
+          {macros.unmappedCount > 0 && (
+            <span className="unmapped-count">{macros.unmappedCount} unmapped</span>
+          )}
+        </span>
+      </h3>
+      {expanded && (
+        <div className="macros-list">
+          {macros.discovered.map(macro => (
+            <div key={macro.name} className={`macro-item ${macro.mapped ? 'mapped' : 'unmapped'}`}>
+              <div className="macro-header" onClick={() => toggleMacro(macro.name)}>
+                <span className={`toggle-icon small ${expandedMacros.has(macro.name) ? 'open' : ''}`}>&#9654;</span>
+                <span className="macro-name">[{macro.name}]</span>
+                <span className={`macro-status-badge ${macro.mapped ? 'mapped' : 'unmapped'}`}>
+                  {macro.mapped ? 'Mapped' : 'Unknown'}
+                </span>
+                <span className="macro-count">{macro.totalCount} uses</span>
+              </div>
+              
+              {expandedMacros.has(macro.name) && (
+                <div className="macro-usages">
+                  <div className="macro-usages-header">
+                    <span className="macro-posts-label">Used in: {macro.postSlugs.slice(0, 5).join(', ')}{macro.postSlugs.length > 5 ? `, +${macro.postSlugs.length - 5} more` : ''}</span>
+                  </div>
+                  
+                  <div className="macro-usages-list">
+                    {macro.usages.map((usage, idx) => (
+                      <div 
+                        key={idx} 
+                        className={`macro-usage ${getValidationClass(usage.validationStatus)}`}
+                        title={usage.validationError || ''}
+                      >
+                        <div className="macro-usage-params">
+                          {Object.keys(usage.params).length === 0 ? (
+                            <span className="no-params">(no parameters)</span>
+                          ) : (
+                            Object.entries(usage.params).map(([key, value]) => (
+                              <span key={key} className="macro-param">
+                                <span className="param-key">{key}</span>=<span className="param-value">"{value}"</span>
+                              </span>
+                            ))
+                          )}
+                        </div>
+                        <div className="macro-usage-meta">
+                          <span className={`validation-badge ${usage.validationStatus}`}>
+                            {usage.validationStatus === 'valid' && '✓'}
+                            {usage.validationStatus === 'invalid' && '✗'}
+                            {usage.validationStatus === 'unknown' && '?'}
+                          </span>
+                          <span className="usage-count">×{usage.count}</span>
+                        </div>
+                      </div>
+                    ))}
+                  </div>
+                </div>
+              )}
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+};
+
+function getValidationClass(status: MacroValidationStatus): string {
+  switch (status) {
+    case 'valid': return 'valid';
+    case 'invalid': return 'invalid';
+    case 'unknown': return 'unknown';
+  }
+}
diff --git a/tests/engine/ImportAnalysisEngine.test.ts b/tests/engine/ImportAnalysisEngine.test.ts
index 40e851e..8ac3920 100644
--- a/tests/engine/ImportAnalysisEngine.test.ts
+++ b/tests/engine/ImportAnalysisEngine.test.ts
@@ -506,6 +506,226 @@ describe('ImportAnalysisEngine', () => {
       expect(report.posts.contentDuplicates).toBe(0);
     });
   });
+
+  describe('analyzeWxr - macro discovery', () => {
+    it('should discover macros from post content using WordPress shortcode format', async () => {
+      setupDbReturns([], [], []);
+
+      const wxrData = createWxrData({
+        posts: [createWxrPost({
+          content: '<p>Hello world</p>[youtube id="dQw4w9WgXcQ"]<p>More text</p>',
+        })],
+      });
+
+      const report = await engine.analyzeWxr(wxrData, '/test.xml');
+
+      expect(report.macros).toBeDefined();
+      expect(report.macros.discovered).toContainEqual(
+        expect.objectContaining({ name: 'youtube' })
+      );
+    });
+
+    it('should discover macros with multiple parameters', async () => {
+      setupDbReturns([], [], []);
+
+      const wxrData = createWxrData({
+        posts: [createWxrPost({
+          content: '[gallery columns="4" caption="My Photos"]',
+        })],
+      });
+
+      const report = await engine.analyzeWxr(wxrData, '/test.xml');
+
+      const galleryMacro = report.macros.discovered.find(m => m.name === 'gallery');
+      expect(galleryMacro).toBeDefined();
+      expect(galleryMacro!.usages).toContainEqual(
+        expect.objectContaining({
+          params: { columns: '4', caption: 'My Photos' },
+        })
+      );
+    });
+
+    it('should aggregate different usages of the same macro', async () => {
+      setupDbReturns([], [], []);
+
+      const wxrData = createWxrData({
+        posts: [
+          createWxrPost({
+            slug: 'post-1',
+            content: '[youtube id="video1"][youtube id="video2" title="My Video"]',
+          }),
+          createWxrPost({
+            slug: 'post-2',
+            content: '[youtube id="video1"]', // Same as first usage in post-1
+          }),
+        ],
+      });
+
+      const report = await engine.analyzeWxr(wxrData, '/test.xml');
+
+      const youtubeMacro = report.macros.discovered.find(m => m.name === 'youtube');
+      expect(youtubeMacro).toBeDefined();
+      // Should have 2 unique usages (video1 and video2)
+      expect(youtubeMacro!.usages.length).toBe(2);
+      expect(youtubeMacro!.totalCount).toBe(3); // 3 total occurrences
+    });
+
+    it('should discover macros from pages as well as posts', async () => {
+      setupDbReturns([], [], []);
+
+      const wxrData = createWxrData({
+        posts: [createWxrPost({ content: '[gallery columns="3"]' })],
+        pages: [createWxrPost({ postType: 'page', content: '[youtube id="abc123def4g"]' })],
+      });
+
+      const report = await engine.analyzeWxr(wxrData, '/test.xml');
+
+      const macroNames = report.macros.discovered.map(m => m.name);
+      expect(macroNames).toContain('gallery');
+      expect(macroNames).toContain('youtube');
+    });
+
+    it('should mark macro as mapped when internal definition exists', async () => {
+      setupDbReturns([], [], []);
+
+      // Register a mock macro for testing
+      const mockMacros = new Map<string, { name: string; validate?: (params: Record<string, string>) => string | undefined }>();
+      mockMacros.set('youtube', {
+        name: 'youtube',
+        validate: (params) => params.id ? undefined : 'Missing id parameter',
+      });
+      mockMacros.set('gallery', { name: 'gallery' });
+      engine.setMacroDefinitions(mockMacros);
+
+      const wxrData = createWxrData({
+        posts: [createWxrPost({
+          content: '[youtube id="test123test"][unknown_macro param="val"]',
+        })],
+      });
+
+      const report = await engine.analyzeWxr(wxrData, '/test.xml');
+
+      const youtubeMacro = report.macros.discovered.find(m => m.name === 'youtube');
+      const unknownMacro = report.macros.discovered.find(m => m.name === 'unknown_macro');
+
+      expect(youtubeMacro?.mapped).toBe(true);
+      expect(unknownMacro?.mapped).toBe(false);
+    });
+
+    it('should validate macro parameters against definitions', async () => {
+      setupDbReturns([], [], []);
+
+      const mockMacros = new Map<string, { name: string; validate?: (params: Record<string, string>) => string | undefined }>();
+      mockMacros.set('youtube', {
+        name: 'youtube',
+        validate: (params) => params.id ? undefined : 'Missing id parameter',
+      });
+      engine.setMacroDefinitions(mockMacros);
+
+      const wxrData = createWxrData({
+        posts: [createWxrPost({
+          content: '[youtube id="validid1234"][youtube]', // One valid, one invalid
+        })],
+      });
+
+      const report = await engine.analyzeWxr(wxrData, '/test.xml');
+
+      const youtubeMacro = report.macros.discovered.find(m => m.name === 'youtube');
+      expect(youtubeMacro).toBeDefined();
+      
+      const validUsage = youtubeMacro!.usages.find(u => u.params.id === 'validid1234');
+      const invalidUsage = youtubeMacro!.usages.find(u => Object.keys(u.params).length === 0);
+      
+      expect(validUsage?.validationStatus).toBe('valid');
+      expect(invalidUsage?.validationStatus).toBe('invalid');
+      expect(invalidUsage?.validationError).toBe('Missing id parameter');
+    });
+
+    it('should provide summary counts for macros', async () => {
+      setupDbReturns([], [], []);
+
+      const mockMacros = new Map<string, { name: string; validate?: (params: Record<string, string>) => string | undefined }>();
+      mockMacros.set('youtube', { name: 'youtube' });
+      engine.setMacroDefinitions(mockMacros);
+
+      const wxrData = createWxrData({
+        posts: [createWxrPost({
+          content: '[youtube id="vid1"][gallery][custom_macro]',
+        })],
+      });
+
+      const report = await engine.analyzeWxr(wxrData, '/test.xml');
+
+      expect(report.macros.total).toBe(3);
+      expect(report.macros.mappedCount).toBe(1); // Only youtube is mapped
+      expect(report.macros.unmappedCount).toBe(2); // gallery and custom_macro not mapped
+    });
+
+    it('should track which posts contain each macro', async () => {
+      setupDbReturns([], [], []);
+
+      const wxrData = createWxrData({
+        posts: [
+          createWxrPost({ slug: 'post-a', title: 'Post A', content: '[youtube id="vid1"]' }),
+          createWxrPost({ slug: 'post-b', title: 'Post B', content: '[youtube id="vid2"]' }),
+          createWxrPost({ slug: 'post-c', title: 'Post C', content: '[gallery]' }),
+        ],
+      });
+
+      const report = await engine.analyzeWxr(wxrData, '/test.xml');
+
+      const youtubeMacro = report.macros.discovered.find(m => m.name === 'youtube');
+      expect(youtubeMacro?.postSlugs).toContain('post-a');
+      expect(youtubeMacro?.postSlugs).toContain('post-b');
+      expect(youtubeMacro?.postSlugs).not.toContain('post-c');
+    });
+
+    it('should handle self-closing shortcodes', async () => {
+      setupDbReturns([], [], []);
+
+      const wxrData = createWxrData({
+        posts: [createWxrPost({
+          content: '[gallery /][youtube id="test" /]',
+        })],
+      });
+
+      const report = await engine.analyzeWxr(wxrData, '/test.xml');
+
+      expect(report.macros.discovered.length).toBe(2);
+    });
+
+    it('should handle shortcodes with single-quoted parameters', async () => {
+      setupDbReturns([], [], []);
+
+      const wxrData = createWxrData({
+        posts: [createWxrPost({
+          content: "[youtube id='singlequoted']",
+        })],
+      });
+
+      const report = await engine.analyzeWxr(wxrData, '/test.xml');
+
+      const youtubeMacro = report.macros.discovered.find(m => m.name === 'youtube');
+      expect(youtubeMacro?.usages[0].params.id).toBe('singlequoted');
+    });
+
+    it('should not detect our internal macro format as WordPress shortcodes', async () => {
+      setupDbReturns([], [], []);
+
+      const wxrData = createWxrData({
+        posts: [createWxrPost({
+          content: '[[youtube id="internal"]] and [youtube id="wordpress"]',
+        })],
+      });
+
+      const report = await engine.analyzeWxr(wxrData, '/test.xml');
+
+      // Should only find the WordPress shortcode, not our internal one
+      expect(report.macros.discovered.length).toBe(1);
+      const youtubeMacro = report.macros.discovered.find(m => m.name === 'youtube');
+      expect(youtubeMacro?.usages[0].params.id).toBe('wordpress');
+    });
+  });
 });
 
 /**