diff --git a/package.json b/package.json
index f06975e..f55da62 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@bsorrentino/pdf-tools",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "description": "",
   "main": "index.js",
   "bin": {
diff --git a/samples/User_Installation_Guide_oracle.pdf b/samples/User_Installation_Guide_oracle.pdf
new file mode 100644
index 0000000..184b3f9
Binary files /dev/null and b/samples/User_Installation_Guide_oracle.pdf differ
diff --git a/src/index.ts b/src/index.ts
index c19a733..d5426c1 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -68,13 +68,19 @@ async function extractImagesfromPages(pdfPath: string) {
 
       const ops = await page.getOperatorList()
 
+      const ImageFromOp = (op: string):PDFImage => 
+        op.startsWith('g_') ?
+          page.commonObjs.get(op)  :
+          page.objs.get(op);
+    
+
       for (let j = 0; j < ops.fnArray.length; j++) {
 
         if (ops.fnArray[j] == OPS.paintJpegXObject || ops.fnArray[j] == OPS.paintImageXObject) {
 
           const op = ops.argsArray[j][0];
-
-          const img = page.objs.get(op) as PDFImage;
+          
+          const img = ImageFromOp(op);
 
           //const scale = img.width / page._pageInfo.view[2];