Prevents printing, context menu, and copy and developer console

browser-copy-block.html

<style>
    @media print { * { display: none } }
</style>

<script>
     document.addEventListener("contextmenu", function (e) {
        e.preventDefault();
    });

    document.addEventListener("mousedown", function (e) {
        e.preventDefault();
    });

    document.addEventListener("click", function(e) {
        if (e.button == 2) e.preventDefault();
    });

    document.addEventListener("keydown", function(e) {
        if (e.keyCode == 123) e.preventDefault();
        else if (e.ctrlKey && e.keyCode == 67) e.preventDefault();
        else if (e.ctrlKey && e.keyCode == 83) e.preventDefault();
        else if (e.ctrlKey && e.keyCode == 80) e.preventDefault();
        else if (e.ctrlKey && e.shiftKey && e.keyCode == 73) e.preventDefault();
    });

    document.querySelector("script").remove();
</script>