chromium-browser --headless --disable-gpu --screenshot --window-size=(width, height) (url)
For example:
chromium-browser --headless --disable-gpu --screenshot --window-size=1280,5000 https://futurestudents.yorku.ca/design
will output to screenshot.png
Please see Getting Started with Headless Chrome for other uses of Headless Chrome (e.g. output to PDF)
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