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Capture screenshot of active window in Javascript


How To Take Screenshots In The Browser Using Js

const capture = async () => {
  const canvas = document.createElement("canvas");
  const context = canvas.getContext("2d");
  const video = document.createElement("video");

  try {
    const captureStream = await navigator.mediaDevices.getDisplayMedia();
    video.srcObject = captureStream;
    context.drawImage(video, 0, 0, window.width, window.height);
    const frame = canvas.toDataURL("image/png");
    captureStream.getTracks().forEach(track => track.stop());
    window.location.href = frame;
  } catch (err) {
    console.error("Error: " + err);
  }
};

capture();

How To Take Screenshots In The Browser Using Js

const screenshotTarget = document.body;

html2canvas(screenshotTarget).then((canvas) => {
    const base64image = canvas.toDataURL("image/png");
    window.location.href = base64image;
});


Conclusion

In this page (written and validated by ) you learned about . What's Next? If you are interested in completing Javascript tutorial, we encourage you simply to start here: Javascript Tutorial.



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