diff --git a/gulpfile.js b/gulpfile.js
index 29f547d..a5b5095 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -81,12 +81,29 @@ gulp.task("index", function(){
 })
 
 gulp.task('resize sm', function(done){
-
+  if(fs.existsSync(__dirname + "/assets/cards/sm/monster/arachas1.png")) {
+    console.log("skip generating sm images");
   return done();
+  }
+  return gulp.src('./assets/original_cards/**/*.png')
+  .pipe(gm(function(gmfile){
+    return gmfile.resize(null, 120);
+  }))
+  .pipe(imagemin())
+  .pipe(gulp.dest('./assets/cards/sm/'));
 });
 
 gulp.task('resize lg', ["resize sm"], function(done){
+  if(fs.existsSync(__dirname + "/assets/cards/lg/monster/arachas1.png")) {
+    console.log("skip generating lg images");
     return done();
+  }
+  return gulp.src('./assets/original_cards/**/*.png')
+  .pipe(gm(function(gmfile){
+    return gmfile.resize(null, 450);
+  }))
+  .pipe(imagemin())
+  .pipe(gulp.dest('./assets/cards/lg/'));
 });
 
 gulp.task("sprite", ["resize lg"], function(){