diff --git a/cms/lib/classes/AcaiAPI.php b/cms/lib/classes/AcaiAPI.php
index a8102fe..be26f53 100644
--- a/cms/lib/classes/AcaiAPI.php
+++ b/cms/lib/classes/AcaiAPI.php
@@ -15,6 +15,7 @@ class AcaiAPI
     private static $schemaCache            = [];
     private static $queryCaches            = [];   // list/query relation results
     private static $requestGetCache        = [];   // unconditional per-request deduplication
+    private static $uploadsColumnsCache    = [];   // prefix => [columna => true] de {prefix}uploads
 
     // ── Public caches (mirror CocoDB interface) ───────────────────────
     public static $getCaches               = [];   // in-memory result cache for get()
@@ -855,7 +856,15 @@ class AcaiAPI
         $db         = Db::getInstance();
         $ph         = implode(',', array_fill(0, count($nums), '?'));
         $fieldPh    = implode(',', array_fill(0, count($uploadFields), '?'));
+        // width/height y las miniaturas (URL + dimensiones de los 4 huecos) van
+        // con cada foto: sin ellas el front no puede reservar el hueco (CLS) ni
+        // montar un srcset. Las rutas de disco (thumbFilePath*) no salen. Solo
+        // las que existan en la tabla: una web antigua sin alguna no se queda
+        // sin fotos por un SELECT roto.
+        $extra      = self::existingUploadsColumns(
+            array_merge(['width', 'height'], self::uploadThumbColumns()), $prefix);
         $selectCols = 'num, `order`, tableName, fieldName, recordNum, filePath, urlPath, '
+                    . ($extra ? '`' . implode('`, `', $extra) . '`, ' : '')
                     . 'info1, info2, info3, info4, info5, alt';
 
         $params = array_merge(array_values($nums), [$tableName], array_values($uploadFields));
@@ -876,10 +885,12 @@ class AcaiAPI
         // Re-index for O(1) lookup
         $index = [];
         foreach ($uploads as $upload) {
-            if ($options['useAbsoluteUrls'] && isset($upload['urlPath'])
-                && strpos($upload['urlPath'], '/cms') === 0
-            ) {
-                $upload['urlPath'] = 'https://' . $_SERVER['HTTP_HOST'] . $upload['urlPath'];
+            if ($options['useAbsoluteUrls']) {
+                foreach (array_merge(['urlPath'], self::uploadThumbUrlColumns()) as $col) {
+                    if (isset($upload[$col]) && strpos($upload[$col], '/cms') === 0) {
+                        $upload[$col] = 'https://' . $_SERVER['HTTP_HOST'] . $upload[$col];
+                    }
+                }
             }
             $field  = $upload['fieldName'];
             $recNum = $upload['recordNum'];
@@ -888,6 +899,47 @@ class AcaiAPI
         return $index;
     }
 
+    /** Sufijos de los 4 huecos de miniatura de `uploads` ('' = el primero). */
+    const UPLOAD_THUMB_SLOTS = ['', '2', '3', '4'];
+
+    /** Columnas de URL de las miniaturas: thumbUrlPath, thumbUrlPath2..4. */
+    private static function uploadThumbUrlColumns()
+    {
+        return array_map(function ($n) { return "thumbUrlPath$n"; }, self::UPLOAD_THUMB_SLOTS);
+    }
+
+    /** URL + ancho + alto de cada hueco de miniatura (sin rutas de disco). */
+    private static function uploadThumbColumns()
+    {
+        $cols = [];
+        foreach (self::UPLOAD_THUMB_SLOTS as $n) {
+            array_push($cols, "thumbUrlPath$n", "thumbWidth$n", "thumbHeight$n");
+        }
+        return $cols;
+    }
+
+    /**
+     * De `$wanted`, las columnas que existen en `{$prefix}uploads` (en su
+     * orden). Un SHOW COLUMNS por prefijo y petición; si falla, ninguna: el
+     * SELECT vuelve a las columnas de siempre en vez de romperse.
+     */
+    private static function existingUploadsColumns(array $wanted, $prefix)
+    {
+        if (!isset(self::$uploadsColumnsCache[$prefix])) {
+            $existing = [];
+            try {
+                foreach ((array) Db::getInstance()->executeS("SHOW COLUMNS FROM `{$prefix}uploads`") as $col) {
+                    if (isset($col['Field'])) $existing[$col['Field']] = true;
+                }
+            } catch (Exception $e) {
+                error_log('[AcaiAPI] SHOW COLUMNS de ' . $prefix . 'uploads fallido: ' . $e->getMessage());
+            }
+            self::$uploadsColumnsCache[$prefix] = $existing;
+        }
+        $cols = self::$uploadsColumnsCache[$prefix];
+        return array_values(array_filter($wanted, function ($c) use ($cols) { return isset($cols[$c]); }));
+    }
+
     /**
      * Injects upload arrays from the pre-built index into a single record row.
      * Each upload field becomes an array of upload objects (same as CocoDB).