diff --git a/report_templates/report_ceph.html b/report_templates/report_ceph.html
index fb9b875..d597ced 100644
--- a/report_templates/report_ceph.html
+++ b/report_templates/report_ceph.html
@@ -70,11 +70,11 @@
             </div>
             <center><br>
             <table><tr>
-                <td><img src="charts/rand_read_4k.png" /></td>
-                <td><img src="charts/rand_write_4k.png" /></td>
+                <td><img src="charts/rand_read_4k.{img_ext}" /></td>
+                <td><img src="charts/rand_write_4k.{img_ext}" /></td>
             </tr><tr>
-                <td><img src="charts/rand_read_16m.png" /></td>
-                <td><img src="charts/rand_write_16m.png" /></td>
+                <td><img src="charts/rand_read_16m.{img_ext}" /></td>
+                <td><img src="charts/rand_write_16m.{img_ext}" /></td>
             </tr></table>
             </center>
             </center>
diff --git a/report_templates/report_hdd.html b/report_templates/report_hdd.html
index 40fadcc..ea04eb5 100644
--- a/report_templates/report_hdd.html
+++ b/report_templates/report_hdd.html
@@ -72,10 +72,10 @@
     </div>
     <div class="row">
         <div class="col-md-6">
-            <img src="charts/rand_read_4k.png"/>
+            <img src="charts/rand_read_4k.{img_ext}"/>
         </div>
         <div class="col-md-6">
-            <img src="charts/rand_write_4k.png"/>
+            <img src="charts/rand_write_4k.{img_ext}"/>
         </div>
     </div>
     <!--div class="row">