Add stylesheet in chrome to get landscape or portrait option

Open Developer Tools → Open the Elements Tab → Add a New Style Element at <head> section.

<style>@page {size: auto !important;}</style>

OR

Press F12. → Go to the Console tab. → Paste the following code:

var style = document.createElement('style');
style.textContent = '@page { size: auto !important; }';
document.head.appendChild(style);

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