Pretty much. PDF was specifically designed to retain the same look across any device. The goal was that if you designed a document to look a certain way, that opening it on another device wouldn’t fuck your entire design. That’s also why editing PDFs is so damned frustrating, because they’re designed to not change. It largely started as a frustration with the “move an image 3 pixels to the left, and now all your text is in the wrong place” issue. But the EEE strategy by Microsoft directly contributed to pdf becoming the de facto way to share documents.