How to download an image using Selenium (any version)?

Question

I was wondering, how can one use selenium/webdriver to download an image for a page. Assuming that the user session is required to download the image hence having pure URL i

Answer 1

Although @aboy021 JS code is syntactly correct I couldn't the code running. (using Chrome V83.xx)

However this code worked (Java):

    String url = "/your-url-goes.here.jpg";
    String imageData = (String) ((JavascriptExecutor) driver).executeAsyncScript(
            "var callback = arguments[0];" + // The callback from ExecuteAsyncScript
                    "var reader;" +
                    "var xhr = new XMLHttpRequest();" +
                    "xhr.onreadystatechange = function() {" +
                    "  if (xhr.readyState == 4) {" +
                        "var reader = new FileReader();" +
                        "reader.readAsDataURL(xhr.response);" +
                        "reader.onloadend = function() {" +
                        "    callback(reader.result);" +
                        "}" +
                    "  }" +
                    "};" +
                    "xhr.open('GET', '" + url + "', true);" +
                    "xhr.responseType = 'blob';" +
                    "xhr.send();");

    String base64Data = imageData.split(",")[1];

    byte[] decodedBytes = Base64.getDecoder().decode(base64Data);
    try (OutputStream stream = new FileOutputStream("c:\\dev\\tmp\\output.jpg")) {
        stream.write(decodedBytes);
    } catch (IOException e) {
        e.printStackTrace();
    }