diff --git a/.vscode/launch.json b/.vscode/launch.json
deleted file mode 100644
index c23774cd..00000000
--- a/.vscode/launch.json
+++ /dev/null
@@ -1,17 +0,0 @@
-{
-    // Use IntelliSense to learn about possible attributes.
-    // Hover to view descriptions of existing attributes.
-    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
-    "version": "0.2.0",
-    "configurations": [
-        {
-            "name": "Launch",
-            "type": "go",
-            "request": "launch",
-            "mode": "auto",
-            "program": "${fileDirname}",
-            "env": {},
-            "args": []
-        }
-    ]
-}
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
deleted file mode 100644
index 0c9921c3..00000000
--- a/.vscode/settings.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-  "go.useLanguageServer": true,
-  "[go]": {
-    "editor.formatOnSave": true,
-    "editor.codeActionsOnSave": {
-      "source.organizeImports": true
-    }
-  },
-}
\ No newline at end of file
diff --git a/cmd/cli/flags.go b/cmd/cli/flags.go
new file mode 100644
index 00000000..40f0da22
--- /dev/null
+++ b/cmd/cli/flags.go
@@ -0,0 +1,42 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+type args struct {
+	url         string
+	connections *int
+	dir         *string
+}
+
+func parse() *args {
+	dir, err := filepath.Abs(filepath.Dir(os.Args[0]))
+	if err != nil {
+		panic(err)
+	}
+	var args args
+	args.connections = flag.Int("C", 16, "Concurrent connections.")
+	args.dir = flag.String("D", dir, "Save directory.")
+	flag.Parse()
+	t := flag.Args()
+	if len(t) > 0 {
+		args.url = t[0]
+	} else {
+		gPrintln("missing url parameter")
+		gPrintln("try 'gopeed -h' for more information")
+		os.Exit(1)
+	}
+	return &args
+}
+
+func gPrint(msg string) {
+	fmt.Print("gopeed: " + msg)
+}
+
+func gPrintln(msg string) {
+	gPrint(msg + "\n")
+}
diff --git a/cmd/cli/gopeed.go b/cmd/cli/gopeed.go
new file mode 100644
index 00000000..04f3d464
--- /dev/null
+++ b/cmd/cli/gopeed.go
@@ -0,0 +1,64 @@
+package main
+
+import (
+	"fmt"
+	"github.com/monkeyWie/gopeed-core/download"
+	"github.com/monkeyWie/gopeed-core/download/base"
+	"github.com/monkeyWie/gopeed-core/download/http"
+	"github.com/monkeyWie/gopeed-core/util"
+	"path/filepath"
+	"sync"
+)
+
+const progressWidth = 20
+
+func main() {
+	args := parse()
+
+	downloader := download.NewDownloader(http.FetcherBuilder)
+	res, err := downloader.Resolve(&base.Request{
+		URL: args.url,
+	})
+	if err != nil {
+		panic(err)
+	}
+
+	err = downloader.Create(res, &base.Options{
+		Path:        *args.dir,
+		Connections: *args.connections,
+	})
+	if err != nil {
+		panic(err)
+	}
+
+	var wg sync.WaitGroup
+	wg.Add(1)
+	downloader.Listener(func(taskInfo *download.TaskInfo, eventKey base.EventKey) {
+		if eventKey == base.EventKeyProgress {
+			printProgress(taskInfo, "downloading...")
+		}
+		if eventKey == base.EventKeyDone {
+			printProgress(taskInfo, "complete")
+			wg.Done()
+		}
+	})
+	wg.Wait()
+	fmt.Println()
+	gPrint("saving file " + filepath.Join(*args.dir, res.Files[0].Name))
+}
+
+func printProgress(taskInfo *download.TaskInfo, title string) {
+	rate := float64(taskInfo.Progress.Downloaded) / float64(taskInfo.Res.TotalSize)
+	completeWidth := int(progressWidth * rate)
+	speed := util.ByteFmt(taskInfo.Progress.Speed)
+	totalSize := util.ByteFmt(taskInfo.Res.TotalSize)
+	fmt.Printf("\r%s [", title)
+	for i := 0; i < progressWidth; i++ {
+		if i < completeWidth {
+			fmt.Print("■")
+		} else {
+			fmt.Print("□")
+		}
+	}
+	fmt.Printf("] %.1f%%    %s/s    %s", rate*100, speed, totalSize)
+}
diff --git a/cmd/terminal/gopeed.go b/cmd/terminal/gopeed.go
deleted file mode 100644
index 909fc326..00000000
--- a/cmd/terminal/gopeed.go
+++ /dev/null
@@ -1,64 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"github.com/monkeyWie/gopeed-core/download"
-	"github.com/monkeyWie/gopeed-core/download/base"
-	"github.com/monkeyWie/gopeed-core/download/http"
-	"github.com/superhawk610/bar"
-	"github.com/ttacon/chalk"
-	"strconv"
-	"sync"
-)
-
-func main() {
-	b := bar.NewWithOpts(
-		bar.WithDimensions(10000, 20),
-		bar.WithDisplay("[", "■", "■", "□", "]"),
-		bar.WithFormat(
-			fmt.Sprintf(
-				" %s:status%s :percent :bar%s :speedKB/s%s ",
-				chalk.Green,
-				chalk.Reset,
-				chalk.Blue,
-				chalk.Reset,
-			),
-		),
-	)
-
-	downloader := download.NewDownloader(http.FetcherBuilder)
-	res, err := downloader.Resolve(&base.Request{
-		URL: "https://dldir1.qq.com/weixin/Windows/WeChatSetup.exe",
-	})
-	if err != nil {
-		panic(err)
-	}
-
-	err = downloader.Create(res, &base.Options{
-		Path:        "E:\\test\\gopeed\\http",
-		Connections: 4,
-	})
-	if err != nil {
-		panic(err)
-	}
-
-	var wg sync.WaitGroup
-	wg.Add(1)
-	downloader.Listener(func(taskInfo *download.TaskInfo, eventKey base.EventKey) {
-		if eventKey == base.EventKeyProgress {
-			b.Update(int(10000*(float64(taskInfo.Progress.Downloaded)/float64(taskInfo.Res.TotalSize))), bar.Context{
-				bar.Ctx("status", "downloading..."),
-				bar.Ctx("speed", strconv.Itoa(int(taskInfo.Progress.Speed/1024))),
-			})
-		}
-		if eventKey == base.EventKeyDone {
-			b.Update(10000, bar.Context{
-				bar.Ctx("status", "complete"),
-				bar.Ctx("speed", strconv.Itoa(int(taskInfo.Progress.Speed/1024))),
-			})
-			wg.Done()
-		}
-	})
-	wg.Wait()
-	b.Done()
-}
diff --git a/download/base/constants.go b/download/base/constants.go
index bf1e6204..4de61146 100644
--- a/download/base/constants.go
+++ b/download/base/constants.go
@@ -17,6 +17,7 @@ type EventKey string
 const (
 	EventKeyStart    = "start"
 	EventKeyPause    = "pause"
+	EventKeyContinue = "continue"
 	EventKeyProgress = "progress"
 	EventKeyError    = "error"
 	EventKeyDone     = "done"
diff --git a/download/downloader.go b/download/downloader.go
index bf639f8c..ae864556 100644
--- a/download/downloader.go
+++ b/download/downloader.go
@@ -121,7 +121,14 @@ func (d *Downloader) Create(res *base.Resource, opts *base.Options) (err error)
 			d.emit(task, base.EventKeyError)
 		} else {
 			task.Progress.Used = task.timer.Used()
-			task.Progress.Speed = task.Res.TotalSize / (task.Progress.Used / int64(time.Second))
+			if task.Res.TotalSize == 0 {
+				task.Res.TotalSize = task.fetcher.Progress().TotalDownloaded()
+			}
+			used := task.Progress.Used / int64(time.Second)
+			if used == 0 {
+				used = 1
+			}
+			task.Progress.Speed = task.Res.TotalSize / used
 			task.Progress.Downloaded = task.Res.TotalSize
 			d.emit(d.tasks[id], base.EventKeyDone)
 		}
@@ -144,7 +151,7 @@ func (d *Downloader) Continue(id string) {
 	defer task.locker.Unlock()
 	task.timer.Continue()
 	task.fetcher.Continue()
-	d.emit(task, base.EventKeyStart)
+	d.emit(task, base.EventKeyContinue)
 }
 
 func (d *Downloader) Listener(fn func(taskInfo *TaskInfo, eventKey base.EventKey)) {
diff --git a/download/http/fetcher.go b/download/http/fetcher.go
index 983ee875..4d4835f1 100644
--- a/download/http/fetcher.go
+++ b/download/http/fetcher.go
@@ -16,6 +16,7 @@ import (
 	"path"
 	"path/filepath"
 	"strconv"
+	"strings"
 	"time"
 )
 
@@ -117,8 +118,8 @@ func (f *Fetcher) Resolve(req *base.Request) (*base.Resource, error) {
 		}
 	}
 	// Get file filename by URL
-	if file.Name == "" {
-		file.Name = path.Base(req.URL)
+	if file.Name == "" && strings.Count(req.URL, "/") > 2 {
+		file.Name = filepath.Base(req.URL)
 	}
 	// unknown file filename
 	if file.Name == "" {
diff --git a/go.mod b/go.mod
index 6eb1af3b..b9de5cff 100644
--- a/go.mod
+++ b/go.mod
@@ -5,13 +5,13 @@ go 1.13
 require (
 	github.com/RoaringBitmap/roaring v0.4.21
 	github.com/cenkalti/mse v0.0.0-20140930130441-6ef65f170972
+	github.com/gizak/termui/v3 v3.1.0
 	github.com/google/uuid v1.1.1
 	github.com/marksamman/bencode v0.0.0-20150821143521-dc84f26e086e
 	github.com/mattn/go-tty v0.0.3 // indirect
 	github.com/sirupsen/logrus v1.4.2
 	github.com/superhawk610/bar v0.0.2
 	github.com/superhawk610/terminal v0.1.0 // indirect
-	github.com/ttacon/chalk v0.0.0-20160626202418-22c06c80ed31
 	golang.org/x/net v0.0.0-20200707034311-ab3426394381
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
 )
diff --git a/go.sum b/go.sum
index 9dc4009e..8555b33e 100644
--- a/go.sum
+++ b/go.sum
@@ -6,6 +6,8 @@ github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/gizak/termui/v3 v3.1.0 h1:ZZmVDgwHl7gR7elfKf1xc4IudXZ5qqfDh4wExk4Iajc=
+github.com/gizak/termui/v3 v3.1.0/go.mod h1:bXQEBkJpzxUAKf0+xq9MSWAvWZlE7c+aidmyFlkYTrY=
 github.com/glycerine/go-unsnap-stream v0.0.0-20181221182339-f9677308dec2 h1:Ujru1hufTHVb++eG6OuNDKMxZnGIvF6o/u8q/8h2+I4=
 github.com/glycerine/go-unsnap-stream v0.0.0-20181221182339-f9677308dec2/go.mod h1:/20jfyN9Y5QPEAprSgKAUr+glWDY39ZiUEAYOEv5dsE=
 github.com/glycerine/goconvey v0.0.0-20190410193231-58a59202ab31 h1:gclg6gY70GLy3PbkQ1AERPfmLMMagS60DKF78eWwLn8=
@@ -26,11 +28,17 @@ github.com/mattn/go-colorable v0.1.4/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVc
 github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
 github.com/mattn/go-isatty v0.0.10 h1:qxFzApOv4WsAL965uUPIsXzAKCZxN2p9UqdhFS4ZW10=
 github.com/mattn/go-isatty v0.0.10/go.mod h1:qgIWMr58cqv1PHHyhnkY9lrL7etaEgOFcMEpPG5Rm84=
+github.com/mattn/go-runewidth v0.0.2/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
+github.com/mattn/go-runewidth v0.0.6 h1:V2iyH+aX9C5fsYCpK60U8BYIvmhqxuOL3JZcqc1NB7k=
 github.com/mattn/go-runewidth v0.0.6/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
 github.com/mattn/go-tty v0.0.3 h1:5OfyWorkyO7xP52Mq7tB36ajHDG5OHrmBGIS/DtakQI=
 github.com/mattn/go-tty v0.0.3/go.mod h1:ihxohKRERHTVzN+aSVRwACLCeqIoZAWpoICkkvrWyR0=
+github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7 h1:DpOJ2HYzCv8LZP15IdmG+YdwD2luVPHITV96TkirNBM=
+github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7/go.mod h1:ZXFpozHsX6DPmq2I0TCekCxypsnAUbP2oI0UX1GXzOo=
 github.com/mschoch/smat v0.0.0-20160514031455-90eadee771ae h1:VeRdUYdCw49yizlSbMEn2SZ+gT+3IUKx8BqxyQdz+BY=
 github.com/mschoch/smat v0.0.0-20160514031455-90eadee771ae/go.mod h1:qAyveg+e4CE+eKJXWVjKXM4ck2QobLqTDytGJbLLhJg=
+github.com/nsf/termbox-go v0.0.0-20190121233118-02980233997d h1:x3S6kxmy49zXVVyhcnrFqxvNVCBPb2KZ9hV2RBdS840=
+github.com/nsf/termbox-go v0.0.0-20190121233118-02980233997d/go.mod h1:IuKpRQcYE1Tfu+oAQqaLisqDeXgjyyltCfsaoYN18NQ=
 github.com/philhofer/fwd v1.0.0 h1:UbZqGr5Y38ApvM/V/jEljVxwocdweyH+vmYvRPBnbqQ=
 github.com/philhofer/fwd v1.0.0/go.mod h1:gk3iGcWd9+svBvR0sR+KPcfE+RNWozjowpeBVG3ZVNU=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
@@ -48,11 +56,10 @@ github.com/superhawk610/terminal v0.1.0 h1:OpWp0+861M3l5j4ZWprm8q0fgG9Y2xXZp5tku
 github.com/superhawk610/terminal v0.1.0/go.mod h1:NQ3EEKWSeofexUwENLX3lv4WR2qeGiLlbf/NveZ7ZAQ=
 github.com/tinylib/msgp v1.1.0 h1:9fQd+ICuRIu/ue4vxJZu6/LzxN0HwMds2nq/0cFvxHU=
 github.com/tinylib/msgp v1.1.0/go.mod h1:+d+yLhGm8mzTaHzB+wgMYrodPfmZrzkirds8fDWklFE=
-github.com/ttacon/chalk v0.0.0-20160626202418-22c06c80ed31 h1:OXcKh35JaYsGMRzpvFkLv/MEyPuL49CThT1pZ8aSml4=
-github.com/ttacon/chalk v0.0.0-20160626202418-22c06c80ed31/go.mod h1:onvgF043R+lC5RZ8IT9rBXDaEDnpnw/Cl+HFiw+v/7Q=
 github.com/willf/bitset v1.1.10 h1:NotGKqX0KwQ72NUzqrjZq5ipPNDQex9lo3WpaS8L2sc=
 github.com/willf/bitset v1.1.10/go.mod h1:RjeCKbqT1RxIR/KWY6phxZiaY1IyutSBfGjNPySAYV4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9 h1:psW17arqaxU48Z5kZ0CQnkZWQJsqcURM6tKiBApRjXI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20200707034311-ab3426394381 h1:VXak5I6aEWmAXeQjA+QSZzlgNrpq9mjcfDemuexIKsU=
diff --git a/util/bytefmt.go b/util/bytefmt.go
new file mode 100644
index 00000000..9026fc3e
--- /dev/null
+++ b/util/bytefmt.go
@@ -0,0 +1,23 @@
+package util
+
+import (
+	"fmt"
+	"math"
+)
+
+var unitArr = []string{"B", "KB", "MB", "GB", "TB", "EB"}
+
+func ByteFmt(size int64) string {
+	if size == 0 {
+		return "unknown"
+	}
+	fs := float64(size)
+	p := int(math.Log(fs) / math.Log(1024))
+	val := fs / math.Pow(1024, float64(p))
+	_, frac := math.Modf(val)
+	if frac > 0 {
+		return fmt.Sprintf("%.1f%s", math.Floor(val*10)/10, unitArr[p])
+	} else {
+		return fmt.Sprintf("%d%s", int(val), unitArr[p])
+	}
+}
diff --git a/util/bytefmt_test.go b/util/bytefmt_test.go
new file mode 100644
index 00000000..88f90a02
--- /dev/null
+++ b/util/bytefmt_test.go
@@ -0,0 +1,57 @@
+package util
+
+import "testing"
+
+func TestByteFmt(t *testing.T) {
+	type args struct {
+		size int64
+	}
+	tests := []struct {
+		name string
+		args args
+		want string
+	}{
+		{
+			name: "100B",
+			args: args{size: int64(100)},
+			want: "100B",
+		},
+		{
+			name: "1KB",
+			args: args{size: int64(1024)},
+			want: "1KB",
+		},
+		{
+			name: "1.9KB",
+			args: args{size: int64(1024*2 - 1)},
+			want: "1.9KB",
+		},
+		{
+			name: "2KB",
+			args: args{size: int64(1024 * 2)},
+			want: "2KB",
+		},
+		{
+			name: "1MB",
+			args: args{size: int64(1024 * 1024)},
+			want: "1MB",
+		},
+		{
+			name: "1.9MB",
+			args: args{size: int64(1024*1024*2 - 1)},
+			want: "1.9MB",
+		},
+		{
+			name: "2MB",
+			args: args{size: int64(1024 * 1024 * 2)},
+			want: "2MB",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := ByteFmt(tt.args.size); got != tt.want {
+				t.Errorf("ByteFmt() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}