diff --git a/Services/ScreenshotManager.cs b/Services/ScreenshotManager.cs
index 60e0438..803ac7d 100644
--- a/Services/ScreenshotManager.cs
+++ b/Services/ScreenshotManager.cs
@@ -519,8 +519,8 @@ namespace CtrEditor.Services
                     result.FileSizeBytes = fileInfo.Length;
                 }
 
-                // Generar base64 si se solicita
-                if (returnBase64)
+                // Generar base64 solo si se cumplen las condiciones restrictivas
+                if (returnBase64 && ShouldGenerateBase64(result))
                 {
                     using (var memoryStream = new MemoryStream())
                     {
@@ -530,6 +530,11 @@ namespace CtrEditor.Services
                         result.Base64Data = Convert.ToBase64String(memoryStream.ToArray());
                     }
                 }
+                else if (returnBase64)
+                {
+                    // Informar por qué no se generó el base64
+                    result.Base64SkipReason = GetBase64SkipReason(result);
+                }
 
                 result.Timestamp = DateTime.Now;
                 return result;
@@ -543,6 +548,62 @@ namespace CtrEditor.Services
             }
         }
 
+        /// <summary>
+        /// Determina si se debe generar base64 basado en las restricciones de tamaño y cantidad de objetos
+        /// </summary>
+        private bool ShouldGenerateBase64(ScreenshotResult result)
+        {
+            const int MAX_DIMENSION = 1024;
+
+            // Solo permitir base64 para objetos únicos
+            if (result.CaptureType == ScreenshotType.Objects && (result.CapturedObjects?.Count != 1))
+            {
+                return false;
+            }
+
+            // Verificar dimensiones de la imagen
+            if (result.Bitmap != null)
+            {
+                if (result.Bitmap.PixelWidth > MAX_DIMENSION || result.Bitmap.PixelHeight > MAX_DIMENSION)
+                {
+                    return false;
+                }
+            }
+
+            // No generar base64 para canvas completo o áreas grandes
+            if (result.CaptureType == ScreenshotType.FullCanvas)
+            {
+                return false;
+            }
+
+            return true;
+        }
+
+        /// <summary>
+        /// Obtiene la razón por la cual no se generó el base64
+        /// </summary>
+        private string GetBase64SkipReason(ScreenshotResult result)
+        {
+            const int MAX_DIMENSION = 1024;
+
+            if (result.CaptureType == ScreenshotType.FullCanvas)
+            {
+                return "Base64 no generado: Canvas completo excede límites de tokens";
+            }
+
+            if (result.CaptureType == ScreenshotType.Objects && (result.CapturedObjects?.Count != 1))
+            {
+                return $"Base64 no generado: Solo se permite para objetos únicos (encontrados: {result.CapturedObjects?.Count ?? 0})";
+            }
+
+            if (result.Bitmap != null && (result.Bitmap.PixelWidth > MAX_DIMENSION || result.Bitmap.PixelHeight > MAX_DIMENSION))
+            {
+                return $"Base64 no generado: Imagen excede {MAX_DIMENSION}x{MAX_DIMENSION} píxeles (actual: {result.Bitmap.PixelWidth}x{result.Bitmap.PixelHeight})";
+            }
+
+            return "Base64 no generado: Condiciones no cumplidas";
+        }
+
         #endregion
     }
 
@@ -563,6 +624,7 @@ namespace CtrEditor.Services
         public string Directory { get; set; }
         public long FileSizeBytes { get; set; }
         public string Base64Data { get; set; }
+        public string Base64SkipReason { get; set; }
         public DateTime Timestamp { get; set; }
         public bool IncludeBackground { get; set; }
         public List<CapturedObjectInfo> CapturedObjects { get; set; } = new List<CapturedObjectInfo>();