diff --git a/contrib/devtools/optimize-pngs.py b/contrib/devtools/optimize-pngs.py
--- a/contrib/devtools/optimize-pngs.py
+++ b/contrib/devtools/optimize-pngs.py
@@ -66,7 +66,8 @@
             fileMetaMap['contentHashPost'] = content_hash(file_path)
 
             if fileMetaMap['contentHashPre'] != fileMetaMap['contentHashPost']:
-                print "Image contents of PNG file " + file + " before and after crushing don't match"
+                print "Image contents of PNG file " + file + \
+                    " before and after crushing don't match"
                 sys.exit(1)
 
             fileMetaMap['psize'] = os.path.getsize(file_path)
@@ -79,6 +80,8 @@
     newHash = fileDict['sha256New']
     totalSaveBytes += fileDict['osize'] - fileDict['psize']
     noHashChange = noHashChange and (oldHash == newHash)
-    print fileDict['file'] + "\n  size diff from: " + str(fileDict['osize']) + " to: " + str(fileDict['psize']) + "\n  old sha256: " + oldHash + "\n  new sha256: " + newHash + "\n"
+    print fileDict['file'] + "\n  size diff from: " + str(fileDict['osize']) + " to: " + str(
+        fileDict['psize']) + "\n  old sha256: " + oldHash + "\n  new sha256: " + newHash + "\n"
 
-print "completed. Checksum stable: " + str(noHashChange) + ". Total reduction: " + str(totalSaveBytes) + " bytes"
+print "completed. Checksum stable: " + \
+    str(noHashChange) + ". Total reduction: " + str(totalSaveBytes) + " bytes"