Get size and format of any image present online or on disk in golang (go)

get_image_size.go

package main

import (
	"bytes"
	"fmt"
	"github.com/varver/rextro"
	_ "golang.org/x/image/bmp"
	_ "golang.org/x/image/webp"
	"image"
	_ "image/gif"
	_ "image/jpeg"
	_ "image/png"
)

func main() {
	ImageUrl := "http://www.axialis.com/tutorials/sample/logo.bmp"
	req := rextro.NewTequest(ImageUrl)
	imageBytesData, err := req.Fetch("GET")
	if err != nil {
		fmt.Println(err.Error())
	}
  /////////////////////////////////////////////////////////////////////////////
	// you can also use code after this if you have a image file on disk instead
	// just read image from disk and pass in bytes below.
	////////////////////////////////////////////////////////////////////////////

	// process image present  as bytes
	img, format, err := image.DecodeConfig(bytes.NewReader(imageBytesData))
	if err != nil {
		fmt.Println(err.Error())
		return
	}

	fmt.Println("Image Format :", format)
	fmt.Println("Image Width :", img.Width)
	fmt.Println("Image Hight :", img.Height)

}