diff --git a/docs.it4i/anselm/software/virtualization.md b/docs.it4i/anselm/software/virtualization.md
index 668a12ee79aa35bc7bf384f91fbf9fd50344fc8e..a5c7c95aa5f2c1df601606ecc42ed2c8398fb249 100644
--- a/docs.it4i/anselm/software/virtualization.md
+++ b/docs.it4i/anselm/software/virtualization.md
@@ -47,7 +47,7 @@ IT4Innovations does not provide any licenses for operating systems and software
 
 We propose this job workflow:
 
-![Workflow](../../img/virtualization-job-workflow "Virtualization Job Workflow")
+![Workflow](../../img/virtualization-job-workflow.png)
 
 Our recommended solution is that job script creates distinct shared job directory, which makes a central point for data exchange between Anselm's environment, compute node (host) (e.g. HOME, SCRATCH, local scratch and other local or cluster file systems) and virtual machine (guest). Job script links or copies input data and instructions what to do (run script) for virtual machine to job directory and virtual machine process input data according instructions in job directory and store output back to job directory. We recommend, that virtual machine is running in so called [snapshot mode](virtualization/#snapshot-mode), image is immutable - image does not change, so one image can be used for many concurrent jobs.
 
diff --git a/docs.it4i/img/salomon-2 b/docs.it4i/img/salomon-2.jpg
similarity index 100%
rename from docs.it4i/img/salomon-2
rename to docs.it4i/img/salomon-2.jpg
diff --git a/docs.it4i/img/salomon b/docs.it4i/img/salomon.jpg
similarity index 100%
rename from docs.it4i/img/salomon
rename to docs.it4i/img/salomon.jpg
diff --git a/docs.it4i/img/virtualization-job-workflow b/docs.it4i/img/virtualization-job-workflow.png
similarity index 100%
rename from docs.it4i/img/virtualization-job-workflow
rename to docs.it4i/img/virtualization-job-workflow.png
diff --git a/docs.it4i/salomon/hardware-overview.md b/docs.it4i/salomon/hardware-overview.md
index d84bd6293e02f4db183bd9ac32dc77597f70ecfc..d1bd65a810686a7425730dde75794ee82f285e83 100644
--- a/docs.it4i/salomon/hardware-overview.md
+++ b/docs.it4i/salomon/hardware-overview.md
@@ -6,7 +6,7 @@ The Salomon cluster consists of 1008 computational nodes of which 576 are regula
 
 [More about schematic representation of the Salomon cluster compute nodes IB topology](ib-single-plane-topology/).
 
-![Salomon](../img/salomon-2)
+![Salomon](../img/salomon-2.jpg)
 
 The parameters are summarized in the following tables:
 
diff --git a/docs.it4i/salomon/introduction.md b/docs.it4i/salomon/introduction.md
index 020f7f27c33d76341caa390302a01f0b66a16953..83ff79221fc01aadbf0cfa1258220778bc275308 100644
--- a/docs.it4i/salomon/introduction.md
+++ b/docs.it4i/salomon/introduction.md
@@ -6,7 +6,7 @@ The cluster runs [CentOS Linux](http://www.bull.com/bullx-logiciels/systeme-expl
 
 ## Water-Cooled Compute Nodes With MIC Accelerator
 
-![](../img/salomon)
+![](../img/salomon.jpg)
 
 ![](../img/salomon-1.jpeg)