Executing headless chrome with the flag --dump-dom or --dump-html yields nothing on stdout. Does anyone know why?
Commands I have tried, with no output:
"c:\Program Files\Google\Chrome\Application\chrome.exe" --headless --dump-dom --disable-gpu https://www.chromestatus.com/
"c:\Program Files\Google\Chrome\Application\chrome.exe" --headless --dump-html --disable-gpu https://www.chromestatus.com/
"c:\Program Files\Google\Chrome\Application\chrome.exe" --headless --dump-html https://www.chromestatus.com/
"c:\Program Files\Google\Chrome\Application\chrome.exe" --headless --dump-dom https://www.chromestatus.com/
"c:\Program Files\Google\Chrome\Application\chrome.exe" --headless --dump-dom --incognito https://www.chromestatus.com/
Removing the --headless option will open the chrome window, no problem.
"c:\Program Files\Google\Chrome\Application\chrome.exe" --dump-html https://www.chromestatus.com/
I can screenshot with --headless chrome no problem.
"c:\Program Files\Google\Chrome\Application\chrome.exe" --headless --screenshot=D:\test.png --disable-gpu --window-size=320,568 https://www.chromestatus.com --user-agent="Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_1 like Mac OS X) AppleWebKit/603.1.30 (KHTML, like Gecko) Version/10.0 Mobile/14E304 Safari/602.1"
Python script showing process is successfully run.
In [1]: import subprocess
In [2]: cp = subprocess.run( '"c:\Program Files\Google\Chrome\Application\chrome.exe" --headless --dump-dom --disable-gpu https://www.chromestatus.com/', shell=True)
In [3]: cp.stderr
In [4]: cp.returncode
Out[4]: 0
In [5]: cp.args
Out[5]: '"c:\\Program Files\\Google\\Chrome\\Application\\chrome.exe" --headless --dump-dom --disable-gpu https://www.chromestatus.com/'
In [6]: cp.stderr
In [7]: cp = subprocess.run( '"c:\Program Files\Google\Chrome\Application\chrome.exe" https://www.chromestatus.com/', shell=True)
Information
- chrome version: 99.0.4844.51 (Official Build) (64-bit)
- Windows version 20H2 (10942.1415)
- Also I have multiple google chrome sync accounts. I dunno if the will interfere.
Reference: