diff --git a/nanoshield/.DS_Store b/nanoshield/.DS_Store
deleted file mode 100644
index 3c4a116..0000000
Binary files a/nanoshield/.DS_Store and /dev/null differ
diff --git a/nanoshield/.README.md.swp b/nanoshield/.README.md.swp
deleted file mode 100644
index dbd9727..0000000
Binary files a/nanoshield/.README.md.swp and /dev/null differ
diff --git a/nanoshield/README.md b/nanoshield/README.md
index c578656..a4aea4b 100644
--- a/nanoshield/README.md
+++ b/nanoshield/README.md
@@ -3,11 +3,11 @@
 Stir shield for Arduino NANO from Jens Warkentin.
 
 <p align="center">
-<img src="https://github.com/micworg/stir/blob/master/nanoshield/images/top.jpg" width=500>
+<img src="https://github.com/micworg/stir/blob/master/nanoshield/images/top.jpg" width=200>
 </p>
 
 <p align="center">
-<img src="https://github.com/micworg/stir/blob/master/nanoshield/images/bottom.jpg" width=500>
+<img src="https://github.com/micworg/stir/blob/master/nanoshield/images/bottom.jpg" width=200>
 </p>