Merge pull request #1 from NathanJPlummer/master

Add adjustable options and update README.

README.md

@@ -1,10 +1,43 @@
 # Introduction
 
-Guetzling is a simple script for macOS and Linux written in Bash, to automate (recursively finding files) the compression of jpegs using the Guetzli algorithm.
+Guetzling is a simple script for macOS and Linux written in Bash to automate (recursively finding files) the compression of JPGs and PNGs using the Guetzli algorithm.
 
-## Install
-1. Install [Guetzli](https://github.com/google/guetzli), and copy it to an executable folder (`/usr/bin` for example), if it's not already there.
-2. Copy Guetzling, copy it to `/usr/bin` or something like that.
+By design, Guetzling will overwrite and/or delete your original files.  If you want to keep your originals, make a backup of your folder before using Guetzling.
+
+## Install Guetzli
+1. Install [Guetzli](https://github.com/google/guetzli), via the directions provided at the link.
+2. Copy Guetzling, copy it to `/usr/bin`.
 
 ## Usage
-1. Simply `cd` to the parent directory of your choice, and `guetzling`. ***Voilà!***
+1. Simply `cd` to the parent directory of your choice, and `guetzling`. ***Voilà!***
+
+## Adjustable Options
+
+By opening the script in a text editor, you can adjust certain variables to change the output of Guetzling.
+
+### JPG
+
+Enable/Disable re-compression of JPG and JPEG files using Guetzling.
+
+	#Recompress JPG Images
+	#Set to false to disable
+	JPG=true
+
+### PNG
+
+Enable/Disable the conversion of PNG to JPG using Guetzling.
+
+	#Convert PNG Images
+	#Set to false to disable
+	#PNGS WILL BE DELETED AFTER CONVERSION
+	PNG=true
+
+### QUALITY
+
+Change Guetzling/Guetzli Quality Level.
+
+	#Set Quality level
+	#Default = 95
+	#Max = 100
+	#Min = 84
+	QUALITY=95

guetzling

@@ -1,10 +1,53 @@
 #!/bin/bash
+
+#Recompress JPG Images
+#Set to false to disable
+JPG=true
+
+#Convert PNG Images
+#Set to false to disable
+#PNGS WILL BE DELETED AFTER CONVERSION
+PNG=true
+
+#Set Quality level
+#Default = 95
+#Max = 100
+#Min = 84
+QUALITY=95
+
 IFS=$'\n';
 FOLDER=$(pwd)
-for f in $(find "$FOLDER" -name '*.jpg')
-#for f in $1/*.jpg
-do
-	echo "Guetzling file - $f..."
-	guetzli -quality 95 "$f" "$f"
-	echo "Done."
-done
+
+if [ $JPG = true ];
+    then
+        for f in $(find "$FOLDER" -name '*.jpg')
+        #for f in $1/*.jpg
+        do
+	        echo "Guetzling file - $f..."
+	        guetzli --quality "$QUALITY" "$f" "$f"
+	        echo "Done."
+        done
+fi
+
+if [ $JPG = true ];
+    then
+        for f in $(find "$FOLDER" -name '*.jpeg')
+        #for f in $1/*.jpeg
+        do
+	        echo "Guetzling file - $f..."
+	        guetzli --quality "$QUALITY" "$f" "$f"
+	        echo "Done."
+        done
+fi
+
+if [ $PNG = true ];
+    then
+        for f in $(find "$FOLDER" -name '*.png')
+        #for f in $1/*.png
+        do
+	        echo "Guetzling file - $f..."
+	        guetzli --quality "$QUALITY" "$f" "${f%.png}.jpg"
+    rm "$f"
+	        echo "Done."
+        done
+fi