PDF vs Word: Which Format Should You Actually Send?
The choice between sending a document as a PDF or as a Word file feels minor until it isn't — a resume that renders differently on the hiring manager's computer, a contract someone accidentally edits, or a report that looks broken on a phone are all, at root, a format mismatch. Here's the actual distinction.
Word is a working format
A .docx file is meant to be edited. Anyone with Word (or a compatible app) can change the text, restructure sections, add comments, or track revisions — which is exactly right for a document still in progress, like a contract under negotiation, a report someone else needs to build on, or a resume you're actively iterating on with a friend's feedback. The tradeoff is that a Word file's appearance isn't fully locked in: it can shift depending on the fonts installed on the viewer's computer, their version of Word, and their display settings, which is a real risk once a document needs to look identical everywhere.
PDF is a final format
A PDF captures the exact visual layout — fonts, spacing, images, page breaks — and locks it in place, so it looks the same on any device, any operating system, any viewer, regardless of what fonts they have installed. That's exactly what you want for a finished resume, a signed contract, an invoice, or anything where "looks exactly like what I designed" matters more than "can be easily edited by the recipient." The tradeoff runs the other way: making changes to a PDF is meaningfully harder than editing a Word file, by design.
A practical way to decide
If the document is still being worked on and multiple people need to edit it, send Word. If the document is finished and its exact appearance matters — a resume, a signed agreement, an official report, anything being printed — send PDF. Job applications specifically tend to prefer PDF by default (it guarantees the formatting the applicant intended, and can't be accidentally altered), unless the posting explicitly asks for a Word document, which usually means the employer's applicant tracking system needs to parse the text directly.
Converting between the two isn't lossless in one direction
Word to PDF is straightforward — the PDF simply captures whatever the Word file currently looks like, with no ambiguity about the result. PDF to Word is the harder direction: a PDF doesn't store "paragraphs" and "headings" the way Word does, so converting back means reconstructing an editable structure from what's fundamentally a fixed layout, which can occasionally shift spacing or formatting slightly, especially in documents with complex layouts, tables, or unusual fonts. It's usually worth a quick check of the converted file rather than assuming a perfect match.
Word to PDF is the safer, more predictable direction for finalizing a document, preserving fonts, images, and layout exactly. PDF to Word handles the reverse when you genuinely need to edit a PDF's content, and is worth a quick review afterward on anything with complex formatting.