diff --git a/1.3.md b/1.3.md
index 5a326d72..0748af8c 100644
--- a/1.3.md
+++ b/1.3.md
@@ -16,6 +16,9 @@ is now calculated by fetch automatically.
 ```sh
 # Image takes up 70% of the terminal size.
 fetch --size 70%
+
+# Size the image in pixels.
+fetch --size 200px
 ```
 
 ### Packages
diff --git a/README.md b/README.md
index f030685b..5ff8fc1a 100644
--- a/README.md
+++ b/README.md
@@ -273,7 +273,7 @@ alias fetch2="fetch \
     --image type                Image source. Where and what image we display.
                                 Possible values: wall, shuffle, ascii,
                                 /path/to/img, off
-    --size 20 | --size 20%      Size to make the image, takes pixels or a percentage.
+    --size 20px | --size 20%    Size to make the image, takes pixels or a percentage.
     --image_backend w3m/iterm2  Which program to use to draw images.
     --shuffle_dir path/to/dir   Which directory to shuffle for an image.
     --image_position left/right Where to display the image: (Left/Right)
diff --git a/config/config b/config/config
index 5a034d66..b78db597 100644
--- a/config/config
+++ b/config/config
@@ -255,7 +255,7 @@ crop_offset="center"
 
 # Image size
 # The image is half the terminal width by default.
-# --size auto, px, 00%
+# --size auto, 00px, 00%
 image_size="auto"
 
 # Right gap between image and text
diff --git a/fetch b/fetch
index 0b1c7796..5d13e234 100755
--- a/fetch
+++ b/fetch
@@ -275,7 +275,7 @@ crop_offset="center"
 
 # Image size
 # The image is half the terminal width by default.
-# --size auto, px, 00%
+# --size auto, 00px, 00%
 image_size="auto"
 
 # Right gap between image and text
@@ -1739,6 +1739,7 @@ getimage () {
                 image_size=$((percent * term_height / 100))
         ;;
     esac
+    image_size=${image_size/px}
 
     # Where to draw the image
     case "$image_position" in
@@ -2266,7 +2267,7 @@ usage () { cat << EOF
     --image type                Image source. Where and what image we display.
                                 Possible values: wall, shuffle, ascii,
                                 /path/to/img, off
-    --size 20 | --size 20%      Size to make the image, takes pixels or a percentage.
+    --size 20px | --size 20%    Size to make the image, takes pixels or a percentage.
     --image_backend w3m/iterm2  Which program to use to draw images.
     --shuffle_dir path/to/dir   Which directory to shuffle for an image.
     --image_position left/right Where to display the image: (Left/Right)