How to take screenshot of a website using Golang? - go

Question

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.

Answer 1

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

Answer 2

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.

Answer 3

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

Answer 4

A few more tools using Go and Chrome/Chromium include:
gowitness CLI app
screenshot library
web2image CLI app based on chromedp

Answer 5

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

Answer 6

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!")
}