1. What Exactly Is a PDF? If you’ve ever opened a document and had the fonts scramble, the images shift, or the layout fall apart completely, you already understand the problem PDFs were built to solve. PDF stands for Portable Document Format. Adobe introduced it in the early 1990s to answer one specific, nagging problem: how do you send a document to someone else and guarantee it looks the same on their screen as it does on yours? That’s the whole point of a PDF. It locks in your fonts, images, spacing, and layout so the file renders identically no…