diff --git a/src/devices/image1.jpg b/src/devices/images/breadboard.jpg
similarity index 100%
rename from src/devices/image1.jpg
rename to src/devices/images/breadboard.jpg
Binary files differ
diff --git a/src/devices/image3.jpg b/src/devices/images/display.jpg
similarity index 100%
rename from src/devices/image3.jpg
rename to src/devices/images/display.jpg
Binary files differ
diff --git a/src/devices/image2.jpg b/src/devices/images/pcb.jpg
similarity index 100%
rename from src/devices/image2.jpg
rename to src/devices/images/pcb.jpg
Binary files differ
diff --git a/src/devices/testing_circuit.jd b/src/devices/testing_circuit.jd
index 93ee06a..baee474 100644
--- a/src/devices/testing_circuit.jd
+++ b/src/devices/testing_circuit.jd
@@ -47,15 +47,15 @@
 These photos show the circuit in action.
 </p>
 
-<img style="margin:1.5em auto" src="image1.jpg" alt="breadboard prototype" />
+<img style="margin:1.5em auto" src="images/breadboard.jpg" alt="breadboard prototype" />
 <br />
 <center>Breadboard prototype</center>
 
-<img style="margin:1.5em auto" src="image2.jpg" alt="an early run of the PCB" />
+<img style="margin:1.5em auto" src="images/pcb.jpg" alt="an early run of the PCB" />
 <br />
 <center>An early run of the PCB</center>
 
-<img style="margin:1.5em auto" src="image3.jpg" alt="example display">
+<img style="margin:1.5em auto" src="images/display.jpg" alt="example display">
 <br />
 <center>Example display</center>
 <p>