How to take screenshot of a website using Golang?

What I'm looking to do, given a URL and take a screenshot of the website using Golang. I searched for results but I didn't get any. Can anyone please help me.

You can use a Go version of Selenium if you want to go that route. https://godoc.org/github.com/tebeka/selenium

There is no pure golang way to do at the moment this since it must involve a browser is some form.

The easiest path to achieve this functionality is probably:

• Find a nice NodeJS library to take website screenshots
• Create a NodeJS script that is suits your needs for taking screenshots (i/o and settings)
• Execute this NodeJS script from Golang and handle the results in your Golang code

Not the cleanest method to get this done though - if you want it cleaner you probably have to build/find a golang package that controls a browser so you can skip the NodeJS middleman.

I solved this issue using https://github.com/mafredri/cdp and a Chrome headless docker container.

You can see my service example here: https://gist.github.com/efimovalex/9f9b815b0d5b1b7889a51d46860faf8a

A few more tools using Go and Chrome/Chromium include:

• gowitness CLI app
• screenshot library
• web2image CLI app based on chromedp

I was writing a program for this specific task. Here is a sample code that browse google.com and takes a screenshot.

package main

import (
	"time"

	driver "github.com/dreygur/webdriver"
)

func main() {
	url := `https://google.com`
	driver.RunServer("./geckodriver")
	driver.GetSession()
	driver.Get(url)
	time.Sleep(8 * time.Second)
	driver.Screenshot("google")
	time.Sleep(8 * time.Second)

	defer driver.Kill()
}

To install the module, run go get github.com/dreygur/webdriver

You can use chromedp.
But you need install chrome browser!

Example :

package main

import (
	"context"
	"fmt"
	"os"
	"time"

	"github.com/chromedp/chromedp"
)

func TackScreenShot(ctx context.Context, url string) ([]byte, error) {
	context, cancel := chromedp.NewContext(ctx)
	defer cancel()

	var filebyte []byte
	if err := chromedp.Run(context, chromedp.Tasks{
		chromedp.Navigate(url),
		chromedp.Sleep(3 * time.Second),
		chromedp.CaptureScreenshot(&filebyte),
	}); err != nil {
		return nil, err
	}
	return filebyte, nil
}

func main() {
	url := "https://google.com"
	ctx := context.TODO()

	data, err := TackScreenShot(ctx, url)
	if err != nil {
		panic(err)
	}

	defer ctx.Done()

	pngFile, err := os.Create("./shot.png")
	if err != nil {
		panic(err)
	}

	defer pngFile.Close()

	pngFile.Write(data)
	fmt.Println("screen shot tacked!")
}