diff --git a/cmd/graph.go b/cmd/graph.go
index e1360756..eb35559f 100644
--- a/cmd/graph.go
+++ b/cmd/graph.go
@@ -4,11 +4,13 @@ import (
 	"bytes"
 	"fmt"
 	"github.com/smira/aptly/deb"
+	"github.com/smira/aptly/utils"
 	"github.com/smira/commander"
 	"io"
 	"io/ioutil"
 	"os"
 	"os/exec"
+	"path/filepath"
 )
 
 func aptlyGraph(cmd *commander.Command, args []string) error {
@@ -35,6 +37,11 @@ func aptlyGraph(cmd *commander.Command, args []string) error {
 	os.Remove(tempfile.Name())
 
 	format := context.Flags().Lookup("format").Value.String()
+	output := context.Flags().Lookup("output").Value.String()
+
+	if filepath.Ext(output) != "" {
+		format = filepath.Ext(output)[1:]
+	}
 
 	tempfilename := tempfile.Name() + "." + format
 
@@ -66,9 +73,19 @@ func aptlyGraph(cmd *commander.Command, args []string) error {
 		return err
 	}
 
-	fmt.Printf("Rendered to %s file: %s, trying to open it...\n", format, tempfilename)
+	if output != "" {
+		err = utils.CopyFile(tempfilename, output)
+		if err != nil {
+			return fmt.Errorf("unable to copy %s -> %s: %s", tempfilename, output, err)
+		}
+		_ = os.Remove(tempfilename)
 
-	_ = exec.Command("open", tempfilename).Run()
+		fmt.Printf("Output saved to %s\n", output)
+	} else {
+		fmt.Printf("Rendered to %s file: %s, trying to open it...\n", format, tempfilename)
+
+		_ = exec.Command("open", tempfilename).Run()
+	}
 
 	return err
 }
@@ -90,6 +107,7 @@ Example:
 	}
 
 	cmd.Flag.String("format", "png", "render graph to specified format (png, svg, pdf, etc.)")
+	cmd.Flag.String("output", "", "specify output filename, default is to open result in viewer")
 
 	return cmd
 }
diff --git a/man/aptly.1 b/man/aptly.1
index 8c2f9996..0e74e8ca 100644
--- a/man/aptly.1
+++ b/man/aptly.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "APTLY" "1" "April 2015" "" ""
+.TH "APTLY" "1" "May 2015" "" ""
 .
 .SH "NAME"
 \fBaptly\fR \- Debian repository management tool
@@ -180,7 +180,7 @@ bucket name
 .
 .TP
 \fBdisableMultiDel\fR
-for S3\-compatible cloud storages which do not support \fBMultiDel\fR S3 API, enable this setting (file deletion would be slower with this setting enabled)
+(optional) for S3\-compatible cloud storages which do not support \fBMultiDel\fR S3 API, enable this setting (file deletion would be slower with this setting enabled)
 .
 .P
 In order to publish to S3, specify endpoint as \fBs3:endpoint\-name:\fR before publishing prefix on the command line, e\.g\.:
@@ -1640,6 +1640,10 @@ Options:
 \-\fBformat\fR=png
 render graph to specified format (png, svg, pdf, etc\.)
 .
+.TP
+\-\fBoutput\fR=
+specify output filename, default is to open result in viewer
+.
 .SH "SHOW CURRENT APTLY\(cqS CONFIG"
 \fBaptly\fR \fBconfig\fR \fBshow\fR
 .