I wonder how to draw frames around various elements in LaTeX (or LuaLaTeX if needed)? I would like to get frames around every text paragraph, and/or every equation, every image, every header, every footer and so on. The frame should identify the bounding box of the object. What is the best way to achieve this? I am looking at hooks like \everyhbox and \everyvbox but I am asking here in case someone had a very clever way to achieve this task.

Best regards,


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The lua-visual-debug package does essentially this (requiring lualatex).

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