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So I have a basic Selenium program, where you make it click on a button and you should get a "Hello World" text copied to your clipboard. The code works if it's not in headless mode, but I want it to work in headless mode. Here's the code with headless mode enabled:
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
import pyperclip
CHROME_PATH = 'C:\\Program Files
(x86)\\Google\\Chrome\\Application\\chrome.exe'
CHROMEDRIVER_PATH = 'C:\\Users\\ACER\\Desktop\\chromedriver_win32\\chromedriver.exe'
chrome_options = Options()
chrome_options.set_headless()
driver = webdriver.Chrome(executable_path=CHROMEDRIVER_PATH,
chrome_options=chrome_options
)
driver.get("file://C:/Users/ACER/Desktop/index.html")
driver.find_element_by_class_name("button").click()
message = pyperclip.paste()
driver.close()
if message == "":
print("Failed")
else:
print(message)
Here is the HTML code:
<!DOCTYPE html>
<html>
<head>
<style>
.wrapper {
text-align: center;
}
.button {
background-color: black;
border: none;
color: white;
padding: 20px 30px;
font-size:30px;
cursor: pointer;
}
.button:hover {
background-color: grey;
}
</style>
</head>
<body>
<div class="wrapper">
<button class="button" onclick="copyToClipboard('Hello World')">Click
Here</button>
</div>
<script type="text/javascript">
function copyToClipboard(text){
var dummy = document.createElement("input");
document.body.appendChild(dummy);
dummy.setAttribute('value', text);
dummy.select();
document.execCommand("copy");
document.body.removeChild(dummy);
}
</script>
</body>
</html>
891
asked Oct 21 '25 04:10
I had the same problem and it appeared the page rendered differently in headless mode. Explicitly setting the window size fixed it for me.
You can either set it in the options:
chrome_options.add_argument("--window-size=1440, 900")
or directly in code:
driver.set_window_size(1440, 900)
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