diff --git a/prefetch.go b/prefetch.go
index f0f10bf..2a1ad64 100644
--- a/prefetch.go
+++ b/prefetch.go
@@ -1,7 +1,6 @@
 package main
 
 import (
-	"bufio"
 	"fmt"
 	"os"
 	"path"
@@ -13,40 +12,34 @@ import (
 )
 
 func PrefetchImages(confImgPath string, ExhaustPath string, QUALITY string) {
-	fmt.Println(`Prefetch will convert all your images to webp, 
-it may take some time and consume a lot of CPU resource. Do you want to proceed(Y/n)`)
-
-	reader := bufio.NewReader(os.Stdin)
-	char, _, _ := reader.ReadRune() //y Y enter
 	// maximum ongoing prefetch is depending on your core of CPU
 	log.Infof("Prefetching using %d cores", jobs)
 	var finishChan = make(chan int, jobs)
 	for i := 0; i < jobs; i++ {
 		finishChan <- 0
 	}
-	if char == 121 || char == 10 || char == 89 {
-		//prefetch, recursive through the dir
-		all := FileCount(confImgPath)
-		count := 0
-		err := filepath.Walk(confImgPath,
-			func(picAbsPath string, info os.FileInfo, err error) error {
-				if err != nil {
-					return err
-				}
-				// RawImagePath string, ImgFilename string, reqURI string
-				proposedURI := strings.Replace(picAbsPath, confImgPath, "", 1)
-				_, p2 := GenWebpAbs(picAbsPath, ExhaustPath, info.Name(), proposedURI)
-				q, _ := strconv.ParseFloat(QUALITY, 32)
-				_ = os.MkdirAll(path.Dir(p2), 0755)
-				go WebpEncoder(picAbsPath, p2, float32(q), false, finishChan)
-				count += <-finishChan
-				//progress bar
-				_, _ = fmt.Fprintf(os.Stdout, "[Webp Server started] - convert in progress: %d/%d\r", count, all)
-				return nil
-			})
-		if err != nil {
-			log.Debug(err)
-		}
+
+	//prefetch, recursive through the dir
+	all := FileCount(confImgPath)
+	count := 0
+	err := filepath.Walk(confImgPath,
+		func(picAbsPath string, info os.FileInfo, err error) error {
+			if err != nil {
+				return err
+			}
+			// RawImagePath string, ImgFilename string, reqURI string
+			proposedURI := strings.Replace(picAbsPath, confImgPath, "", 1)
+			_, p2 := GenWebpAbs(picAbsPath, ExhaustPath, info.Name(), proposedURI)
+			q, _ := strconv.ParseFloat(QUALITY, 32)
+			_ = os.MkdirAll(path.Dir(p2), 0755)
+			go WebpEncoder(picAbsPath, p2, float32(q), false, finishChan)
+			count += <-finishChan
+			//progress bar
+			_, _ = fmt.Fprintf(os.Stdout, "[Webp Server started] - convert in progress: %d/%d\r", count, all)
+			return nil
+		})
+	if err != nil {
+		log.Debug(err)
 	}
 
 	_, _ = fmt.Fprintf(os.Stdout, "Prefetch completeY(^_^)Y\n\n")