diff --git a/README.md b/README.md
index e4d2ac5..ff49c48 100644
--- a/README.md
+++ b/README.md
@@ -54,12 +54,13 @@ Using
 
         --width=0        Image width
         --height=0       Image height
+        --fit            Best fit for required width and height
         --quality=75     JPEG image quality
         --filter=2       0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos
         --png            Encode images to PNG instead of JPEG
         --bmp            Encode images to 4-Bit BMP (16 colors) instead of JPEG
         --gif            Encode images to GIF instead of JPEG
-        --rgb            Convert images that have RGB colorspace (use --no-rgb if you only want to process grayscale images)
+        --rgb            Convert images that have RGB colorspace (use --no-rgb if you only want to convert grayscale images)
         --nonimage       Leave non image files in archive (use --no-nonimage to remove non image files from archive)
         --grayscale      Convert images to grayscale (monochromatic)
         --rotate=0       Rotate images, valid values are 0, 90, 180, 270
diff --git a/cbconvert.go b/cbconvert.go
index b213de0..33d09db 100644
--- a/cbconvert.go
+++ b/cbconvert.go
@@ -89,6 +89,7 @@ type options struct {
 	Quality   int    // JPEG image quality
 	Width     int    // image width
 	Height    int    // image height
+	Fit       bool   // Best fit for required width and height
 	Filter    int    // 0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos
 	RGB       bool   // convert images that have RGB colorspace
 	NonImage  bool   // Leave non image files in archive
@@ -160,7 +161,11 @@ func transformImage(img image.Image) image.Image {
 	var i image.Image = img
 
 	if opts.Width > 0 || opts.Height > 0 {
-		i = imaging.Resize(i, opts.Width, opts.Height, filters[opts.Filter])
+		if opts.Fit {
+			i = imaging.Fit(i, opts.Width, opts.Height, filters[opts.Filter])
+		} else {
+			i = imaging.Resize(i, opts.Width, opts.Height, filters[opts.Filter])
+		}
 	}
 
 	if opts.Rotate > 0 {
@@ -896,6 +901,7 @@ func parseFlags() {
 	convert.Arg("args", "filename or directory").Required().ExistingFilesOrDirsVar(&arguments)
 	convert.Flag("width", "Image width").Default(strconv.Itoa(0)).IntVar(&opts.Width)
 	convert.Flag("height", "Image height").Default(strconv.Itoa(0)).IntVar(&opts.Height)
+	convert.Flag("fit", "Best fit for required width and height").BoolVar(&opts.Fit)
 	convert.Flag("quality", "JPEG image quality").Default(strconv.Itoa(jpeg.DefaultQuality)).IntVar(&opts.Quality)
 	convert.Flag("filter", "0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos").Default(strconv.Itoa(Linear)).IntVar(&opts.Filter)
 	convert.Flag("png", "Encode images to PNG instead of JPEG").BoolVar(&opts.ToPNG)