There is an option in most browsers called “Shrink-to-Fit”. This is a page setup configuration that, if turned on, will attempt to scale the web page in size to make it fit on the selected paper size you are printing to. The scaling mechanism also attempts to scale it to a size that will fit on the least amount of pages. Although this does make sense when you are trying to print an actual web page, it can be a nightmare for web application developers who are trying to control the print job. For example, say your web application produces a Invoice for a customer. As a developer you want to try to control the layout of the invoice so you probably have a print.css file and you already have taken into account the page layout specific for a print job.
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