diff --git a/skimage/data/chelsea.jpg b/skimage/data/chelsea.jpg deleted file mode 100644 index 7692c1f5..00000000 Binary files a/skimage/data/chelsea.jpg and /dev/null differ diff --git a/skimage/data/chelsea.png b/skimage/data/chelsea.png new file mode 100644 index 00000000..fae212d2 Binary files /dev/null and b/skimage/data/chelsea.png differ